SA Roofing August 2013 | Issue: 52

www.trademax.co.za

AUGUST 2013 Issue: 52

SA R36 each incl. / R360 per annum incl.

AUGUST 2013

Trademax Publications

ISSUE: 52

SA Roofing Tel: 0861 SA ROOF Tel: 0861 727 663

EDITOR’S COMMENTs....................................................................................................... 2 steel awards..................................................................................................................6-8 Architecture........................................................................................................... 10-12 cover story.............................................................................................................. 14-18 Steel................................................................................................................................ 20-23 LSFB.................................................................................................................................. 24-27 Women’s month.................................................................................................... 30-31 LSFB.................................................................................................................................. 32-34 Weather barriers.................................................................................................. 36-37 Shingles....................................................................................................................... 38-39 LSFB.................................................................................................................................. 40-41 Roof Trusses.............................................................................................................. 42-43 Health & safety....................................................................................................... 44-45 Glazing........................................................................................................................ 46-47 news..................................................................................................................................... 48 Asbestos............................................................................................................................. 50 CSR................................................................................................................................... 52-53 Product launch......................................................................................................... 54 paints & coatings....................................................................................................... 55 csr......................................................................................................................................... 56

Cell: 082 266 6976 Fax: 0866 991 346 www.trademax.co.za P.O. Box 37053 Chempet, 7442

Publisher: Billy Perrin billy@trademax.co.za 0861 727 663 Editor: Jennifer Rees editor@trademax.co.za 0861 727 663

EDITORIAL INTERN: Tanya Paulse tanya@trademax.co.za 0861 727 663 Advertising: Jacqui Marsh jacqui@trademax.co.za 0861 727 663

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Bradley Williams bradley@trademax.co.za 0861 727 663

Layout & design: Craig Patterson craig@trademax.co.za

SUBSCRIPTIONS & DATA: Luke Perrin luke@trademax.co.za 0861 727 663

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DISCLAIMER The views expressed herein are not necessarily those of Trademax Publications. Although we have done our best to ensure the accuracy of our content, neither Trademax Publications nor SA Roofing magazine will be held liable for any views expressed or information disseminated in this issue.

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EDITOR’S commentS

Recognition Welcome to the August issue of the SA Roofing magazine, where we turn our attention to women in construction and highlight a fantastic light steel frame building project that has recently captured the attention of the media.

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eatured on page 24 is the KykNet EkoStyl home renovation project, a shining example of the power of collaboration and the benefits of alternative building techniques and products. The Southern African Light Steel Frame Building Association (SASFA) was approached by the EkoStyl programme about taking part in a series on eco friendly construction, which would include “the full-scale renovation of a masonry-built house – including the addition of a 140m² second storey using LSFB.” (SASFA) The number of sponsors willing to get on board this project to supply their great products is remarkable. We have featured some of them in this issue, along with their expert contributions to the project and applaud their involvement in an initiative.

Women’s month: The emergence of ‘bigger, better’ roles for women in the construction industry represents a highly relevant indicator of economic development in our country and the world. Today, it is inspiring to see that there are many more professional women making their mark as construction industry professionals – a traditionally masculine pursuit – but there is much improvement left to be desired.

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The empowerment of women stimulates development in a number of spheres, but in particular in a socio-economic context, which is particularly important in Africa, where developing countries could grasp this opportunity for prosperity by supporting this development through better education, meaningful employment and higher earnings for women.

At the SA Roofing magazine, we hope that one day, we will not require special months or days dedicated specifically to women in order to observe and dignify their presence and the roles they play in our society and to highlight and frown upon issues of abuse against women by which our country, and indeed, the world, is beleaguered, even crippled. We hope for a future in which the recognition of women as valid, vital, equal, highly competent contributors to a progressive South Africa is simply the status quo.

Enjoy the read!

Jen Please forward your comments, suggestions, questions and contributions to editor@trademax.co.za.

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Hermanus NOW OPEN Paarl NOW OPEN Upington NOW OPEN Pretoria NOW OPEN Witbank NOW OPEN Rustenburg NOW OPEN Marburg

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At our Builders truss division we offer the following services: • • • • • • • •

Free roof truss quotations Professional advice and friendly service Supplier of all roof coverings at competitive prices Member of the ITC (Institute for Timber Construction) ITC certificate offered with all quotes (Roof inspection A19 certificate) Precision truss manufacturing Installation of trusses and coverings 5-7 day turn-around from order to delivery*

* (order means that money has been deposited and reflects in the Builders account)

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0860 BUILDERS/0860 284 533 or visit us at www.builders.co.za

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We now have 15 Truss Plants across the country

LIGHT GAUGE STEEL The low mass per m2 (between 2-10kg) of this roofing system ensures both savings on the supporting structure as well as on transportation and erection costs whilst also being vermin proof and non-combustible.

Large sections of the roof can simply be pre-assembled on the ground and hoisted into position on the walls – making this one of the most viable systems with a large range of applications up to a clear span of 40m.

Supported through a substantial network of licensed truss suppliers, Ultra-Span is equally ideal for all local and export applications where it can be pre-assembled or site assembled.

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Industries South Africa (Pty)Ltd, a division of the worldwide MiTek Group.

creating the advantage

Ste e l Awa r d s

Bank and Light Steel Frame Project Enter Steel Awards 2013 An innovative workers’ accommodation project built with the light steel frame method on St Helena Island and the new Standard Bank office building in Rosebank, Johannesburg, are among the exciting entries in this year’s Steel Awards. This is according to Spencer Erling, Southern African Institute of Steel Construction (SAISC) education director.

“The quality of this year’s entries hasn’t disappointed. They demonstrate creativity and innovation in the use of steel and these two projects are fine examples of this,” Erling says.

Standard Bank office building Standard Bank’s new building is on Oxford Road, just a stone’s throw away from the Rosebank Gautrain Station, making it one of the most desirable corporate addresses in Johannesburg.

The stunning development consists of two office towers of nine and eleven stories each atop a multilevel underground car park. The towers are joined by a 36m-wide, nine-storey high, north-south running atrium enclosing multilevel escalators and link bridges at the southern end.

The east- and west-facing façades of the office towers have narrower atria, stretching from podiums at first-floor level all the way up to their roof levels, bringing in substantial natural light to the inner-office floor spaces.

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Innovation in the use of steel The project team explains that steel was the only solution for the structure of the atrium roofs and glass-clad façades, because of the large spans involved and the minimal supporting structure that the client wanted in the vertical façades.

The project architect was GLH Architects, who worked with Pure Consulting, the structural and façade engineers. The main contractor on the project was Wilson Bayly Holmes – Ovcon (WBHO), and the steelwork contractor was Tass Engineering.

“All three atria are of similar steel construction, with ‘sawtoothed’ roof trusses that encompass vertical, glass-clad faces to let in light throughout the day as well as exposed tubular horizontal trusses carrying the double-glazed vertical façades,” said Rob Mylroie, Construction Director of Tass Engineering.

The western, eastern and southern atrium façades are supported at their bottom level on square tubular struts, which run up the full height of the façade, through each of the horizontal ‘wind girders,’ providing vertical support to each of them as they pass through.

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Ste e l Awa r d s as for South African construction company, Basil Read, which was awarded the contract to design, build, operate and then transfer the airport.

Basil Read appointed George-based SA Steelframe Systems to construct a village on the island for a workforce of 200 to 300 people, who will build the airport, which is estimated to be operational by 2016. The village includes accommodation, ablution and recreational units, laundries, a gymnasium, security offices, as well as kitchen and dining room units.

The major challenge, from an engineering and fabrication point of view, was the need to achieve structurally sound connections throughout the exposed tubular members with clean smooth lines and no exposed connection bolts. “This had particular relevance in the two main support girders on the northern façade and step-down roof, due to the extremely high forces that are carried by these girders.”

SA Steelframe Systems explained that light steel frame construction offered the best solution for creating this village on the remote, environmentally sensitive island. “When you consider the combination of reduced time of construction, the lower logistical costs of the modular system and the relative ease of assembly, and, of course, the substantially smaller carbon footprint when compared to more traditional building methods, it made a lot of sense,” said Johan Marais, owner of SA Steelframe Systems.

The isolated nature of the island presented the team with its own challenges. Since very little building material is available on the island, all materials had to be shipped via 20 foot containers from either Cape Town or Walvis Bay harbours.

The project was designed to achieve a four-star rating under the Green Building Council of South Africa’s rating system in the ‘Design’ and the ‘As Built’ categories. Standard Bank has subsequently been awarded a five-star Design rating by the Green Building Council of South Africa and is still on track to achieve the four-star rating targeted in terms of the final AsBuilt certification.

All the building materials – with the exception of the Rockcote render and paint system – were sourced in South Africa and delivered to Cape Town or Walvis Bay harbours, and from there they were shipped to St Helena, which drew praise from SAISC’s Erling.

St Helena Workers’ Village

“An aspect of this year’s theme is ‘proudly South African’ and the St Helena airport project shows the power of local ingenuity on a truly international stage,” he said. He added that the work on this groundbreaking project is evidence of the ongoing quality and innovation in local structural steel design and construction.

St Helena, in the South Atlantic Ocean, is one of the most isolated islands in the world, and its new international airport project represents a historic milestone for the island, as well

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Ste e l Awa r d s As the team’s submission explained, the scope had an innovative developmental element in the sense that the accommodation units had to be converted into two- and three-bedroomed houses after completion of the airport project. This ‘house conversion’ will be made possible with minimal internal changes and the adjustment of a few windows and doors. These houses will then be sold to local residents.

The local authorities have been so impressed by the worker’s village, that they have approached SA Steelframe Systems to supply costing of the construction of a child-care centre, an extension to a hospital and other housing needs on the island. “The cost savings and speed of erection, coupled with the drive to create ‘thermally efficient’ and ‘environmentally friendly’ buildings, have alerted the islanders to the availability of alternative building technologies like light steel frame building,” the submission explained.

The main sponsor of Steel Awards 2013, which will be held simultaneously in Johannesburg, Cape Town and Durban on 19th September 2013, is Aveng Trident Steel. Other sponsors are: Macsteel (Table Décor); Cadex SA (Photo Competition); The Association of Steel Tube and Pipe Manufacturers of South Africa (Tubular Award); Stewarts & Lloyds (Light Steel Frame Award) and partner sponsors: ArcelorMittal SA; B&T Steel; Eazi Sales & Service; Genrec Engineering; NJR Steel; Peddinghaus; Tubular Holdings; Vital Engineering.

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PROJECT TEAMS Standard Bank

Developer/Owner: Standard Bank Architect: GLH Architects Structural Engineer: Pure Consulting (Pty) Ltd Façade Engineer: Pure Consulting (Pty) Ltd Quantity Surveyor: Norval Wentzel Steinberg (Pty) Ltd Project Manager: Standard Bank Properties Time Manager: Orion Project Management Contract Coordinator: Mstudio (Pty) Ltd Main Contractor: Wilson Bayly Holmes – Ovcon (WBHO) Steelwork Contractor: Tass Engineering Detailers/Detailing Company: Precise Structural Modeling (Pty) Ltd Erector: On Par Steel

St Helena

Developer/Owner: Basil Read Architect: Munnik Visser Structural Engineer: DMS Structures Project Manager: SA Steelframe Systems Main Contractor: Basil Read Steelwork Contractor: SA Steelframe Systems Detailers/ Detailing Company: SA Steelframe Systems

For more information about the SAISC Steel Awards 2013 please go to www.saisc.co.za

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R E S I S TA N C E

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A rc h ite ctu r e

Corobrik bricks help build ‘new face’ of NNMU Three different Corobrik clay brick products were used in the construction of the R42 million engineering building at Nelson Mandela Metropolitan University (NMMU) in Port Elizabeth, completed in September last year, helping to fill the client’s brief for the creation of ‘a new face’ for the institution.

The newly completed Nelson Mandela Metropolitan University Engineering building shows the impressive Rheinzink Tiles.The Rheinzink tiles laid in an overlapping diagonal pattern contrast with the pale Sandstone Travertine brickwork to form an impressive modern construction contrasting with the traditional building alongside. Photographer: Craig Cuff.

“This is the first major building to be built since the merger of the former University of Port Elizabeth and the Port Elizabeth Technikon and the client desired a face that communicated its position as a dynamic and leading academic institution on the African continent,” said Hubert Sieg of Imbono FJA Architects, who were awarded the contract.

“We chose Corobrik Sandstone Travertine for the exterior walls and planters because of its dimensional accuracy, as well as for its aesthetics, as the yellow matched the colour of the existing surrounding buildings. At the same time we tried to combine materials from the North campus, where the new building is located, and the South campus to create a new identity for the merged institution.”

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Corobrik Firelight Travertine with its rich red hue was used inside the building, while De Hoop red pavers were interspersed with a lighter shade on the outside walkways.

“Both were selected by the architects as their colour and textures were in context with nature reserve surrounds in which the university sits,” said Christie Van Niekerk, Manager, Corobrik Cape. “The other advantages of our clay bricks relating to thermal performance, low fire risk, longevity with low maintenance all helped fulfil important functional needs of this educational institution building.”

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A rc h ite ctu r e The entrance to the new Engineering building at the Nelson Mandela Metropolitan University in Port Elizabeth. Photographer: Rob Duker.

A total of 60 000 Sandstone Travertine bricks, 8 000 Firelight Travertine face bricks and 45 000 De Hoop red pavers from Corobrik were incorporated in the project.

The detailing of the design was purposefully robust to reflect the activities of the mechanical engineering department. The architects sought to integrate the existing forms and materials from the two campuses, namely the concrete brutalist forms of the university and the less spectacular modernist features of the technikon.

The idea was to create living and learning spaces within and external to the building that would provide sheltered, peoplefriendly gathering places for the informal sharing of ideas. The steel support structure to the large open space workshops were extended to connect into the ground, setting up smaller intimate cloisters with benches and landscaping for use by the students.

“The combination of concrete frame and brick infill panels allowed for easy spatial changes during the building process,” Sieg explained. “The modern form of the building represents a new face for the university and also acts as a Green heat buffer.”

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The interior of the Engineering building showing the Corobrik’s Firelight Travertine which contrasts with other building materials. Photographer: Craig Cuff.

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cov e r sto ry

LCP Roofing (Pty) Ltd. Leaders in Roof Truss Technology

E

stablished in early 2010, LCP Roofing has grown from humble beginnings to a force to be reckoned with in the Gauteng truss fabricator and erector market. Today the management of LCP Roofing, with SANS1900 (SATAS) accreditation to its name, and with industry leading equipment and a dedicated staff complement, is excited as to what the future holds.

“Our vision, to become the preferred roofing company in Gauteng and to grow a sustainable business whilst utilising industry-leading software and equipment to provide our clients and shareholders with added value and our staff with safe and secure employment, has become a reality,” says Andri Pretorius, Managing and Operational Director of the Pretoria East-based fabricator.

LCP Roofing specializes in residential and commercial timber roof structures with either concrete tile or metal sheet roof coverings. “The more complicated and difficult the structure, the more we rise to the challenge,” says Pretorius, adding, “No project is too large for us and we have completed a number of school projects, with the largest project thus far being a 17 000m² school in Amsterdam, Mpumulanga. Other schools recently completed are 7 800m² in Benoni, 3 000m² in Witbank, 7 600m² in Hammanskraal and a re-roof of an old school building of 5 000m² in Breyton, also in Mpumulanga.”

“Let’s not forget our ‘bread and butter’ clients, though. They are our lifeblood and we are humbled by the loyal support we have received from them.

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This is not without hard work, however, and our five client representatives ensure that our estimating department is fed with a constant stream of drawings for quotations,” continues Pretorius.

“A year ago we were quoting about 140 jobs a month. Now it is not the exception when we top the 200 mark every month,” adds William Long, Senior Estimator.

System & Software support Says Lyndsay Cotton, General Manager of LCP Roofing, "We could not have done it without support and assistance from our system and software supplier, International Truss Systems (ITS). We started with absolutely nothing. In 2010, we were a new business in a struggling economy and the banks were not interested in us. ITS have been at our side from the beginning and all our factory capital equipment purchases were facilitated by or through them."

Factory The production facility is, by South African standards, very well equipped and efficient. At peak times, the facility produces up to 1500m² daily and certainly has the capacity to produce the volumes demanded by larger projects.

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cov e r sto ry

A Spida Machinery 2000 CNC saw, imported from New Zealand ensures that all timber is very accurately cut and ensures that the human error factor in length and angle measurements is completely eliminated.

“This machine is amazing,” says Pretorius. “When we started producing over 800m² a day we thought we needed a second unit. We then re-trained our operators and that made the difference and this unit now easily feeds both our framing tables.” Having said that, he adds that the company is looking at even better technology and a fully computerized linear saw is on the budget list for the future. “We are a progressive thinking team and we are going forward,” he adds.

The second best decision we ever made was to look at a better framing and press process. We spent months researching the subject and we even went as far as visiting suppliers and fabricators in the United Kingdom.

After that, the decision was not a difficult one to make and the first of the two AV Birch presses arrived from the UK in October 2011. We thought we would keep our ‘old fashioned’ truss rollers as a back-up, but sold them two months later.

They were just not going to fit in with our philosophy of creating a modern and quality-driven truss fabrication business.

Our second Birch press arrived in January this year. The framing tables were too large and expensive to import, so we made them ourselves. The roller guides, rails, flip-over legs brackets, end stops, etc. were all designed in-house and cut on our own CNC plasma table and fabricated in our own facility.

The table presented some special challenges and some of the manufacturer design features were changed and ‘improved’ upon.

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The table is 43mm thick and consists of four layers of laminated material; firstly an imported birch-ply, then a marine ply filler layer, unistruts, another supawood filler and the final layer, which is a 10mm uPVC hard wearing and marking surface.

Approximately 50 litres of high bond glue was applied and over 7000 screws and bolts of varying types and sizes were used in a 14.5m table. The jigging bobbins were also designed in-house and were locally extruded.

Certification & Grading The staff at LCP Roofing proudly display, not only the company and system logos on their clothing, stationery and vehicles, but also those of the Institute for Timber Construction (ITC-SA) fabricator and erector logos and even more importantly, the logo of the South African Technical Auditing Services (SATAS).

"I am proud to be associated with a company that is not only very professional in its approach to its systems and policies and which produces a quality product, but also gives us fantastic support," says Juane-Merie Westgate, one of the sales representatives at the company. "The SATAS SANS 1900 quality mark differentiates us above the rest and I can discuss projects with my clients with total confidence," she continues.

The ITC-SA audits its licensed fabricators for the awarding of certificates of competence for the design, manufacture, supply and erection of pre-fabricated nail plated timber trusses to the desired standards. LCP Roofing proudly displays its Fabricator and Erector certificates in its office, both A-graded.

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cov e r sto ry

Andri Pretorius.

The South African Technical Auditing Services (SATAS) is accredited by South African National Accreditation Systems (SANAS) to certify manufacturers, producing products within the scope of accreditation, to the requirements of ISO Guide 65.

A Product Certification Logo was registered on the 17 December 2002 and within a short while, timber products bearing this logo appeared on the market. This logo has since become highly respected as a mark of distinguished quality.

“When I received the news on the 15 August 2011 that we had been granted permission to apply the SATAS logo to our product, it was the happiest day of my life,” says Pretorius. “It was the culmination of a lot of hard work and of putting systems into place. I climbed onto my desk and danced a small jig,” he laughs.

Upliftment & mentorship LCP Roofing, through financial assistance and mentorship, has developed two totally independent carpenter teams. Today these two sole proprietor business units have created employment for 16 individuals and have bought their own tools, equipment and vehicles. Its other regular subcontractors have all placed their faith in a company that has given them sustainable and consistent employment.

LCP Roofing echoes the sentiment that empowerment comes through education and the company has developed and placed at its entire staff’s disposal a financial assistance scheme for study loans at bona fide educational institutions.

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Training is a priority and LCP Roofing staff have been trained in modules of ITS software, ITC-SA intermediate Estimator and Designer courses, crane operator certificates, Applicad roof sheeting design software and Joomla & Wordpress for its website design and maintenance. Regular in-house factory training is also conducted, so as to ensure compliance with the various standards.

Erection teams “Although we have good and reliable sub-contracted erection teams,” says Cotton, “it became necessary to develop and grow a fully equipped in-house multifunctional team as well.

This has proved to be a huge success, especially since we are becoming more and more involved in very upmarket and exclusive exposed trusses. Our in-house team has a fullyequipped mobile workshop, which they tow behind their Sprinter bus to job sites.”

Aggressive marketing campaign An aggressive marketing campaign was launched in mid-2012 and has been hugely successful. The old adage, ‘A business without a sign is a sign of no business’ rings true. Two billboard campaigns were launched in 2013, a number of prominent publications, including an earlier issue of the SA Roofing magazine, featured LCP Roofing and the dedicated sales team have proved to have been the recipe for success with LCP Roofing almost doubling its turnover in the 2012/2013 financial year, despite a still very depressed economy.

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cov e r sto ry Fleet Management

For more information, contact:

Pretorius manages the fleet of over 22 trucks, trailers, LDVs and cars and, to assist him, he uses plant maintenance software and an online fleet management system. Keeping track of a fleet all over Gauteng and beyond is no mean feat and the fleet management and tracking system, Fleet Care, supplied, installed and maintained by Sarel van der Walt of African Stuff, not only monitors all vehicle functions, it also allows him to dispatch any vehicle remotely to its delivery location or collection point by sending waypoints to the vehicle’s Garmin GPS unit.

(t) 012 811 0452 (f) 012 811 0056 (e) admin@lcproofing.co.za (w) www.lcproofing.co.za

In closing, Pretorius says that prospective clients can contact LCP Roofing through various methods, but the easiest is probably via its website, where all the relevant contact information has been published. “We look forward to meeting with them at our offices, where we can physically showcase our product and demonstrate their roof designs in 3D. There is always time for a cup of good coffee as well.”

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Ste e l

BLUESCOPE introduces Clean COLORBOND™ Steel with Thermatech™ BlueScope Steel Fact File An information source for design professionals

FF9 – SOLAR REFLECTANCE INDEX/ ENERGY EFFICIENCY BlueScope is committed to continual improvement of environment performance and the efficient use of natural resources. Our objective is to produce a range of versatile building products and steel solutions that are innovative, durable, safe and aesthetically pleasing.

Energy Efficiency There are numerous ways to improve energy efficiency, such as: • Light coloured roofing materials to reduce solar heat gain • The use of low thermal mass materials that respond to temperature changes comparatively quickly whereas high thermal mass materials take longer to heat or cool • Insulating walls, ceilings, roofs and suspended floors • Favourably orientating the building and providing exterior shading to control solar heating and wind flow • Thermatech™ solar reflectance technology

For example, a light coloured Clean COLORBOND™ steel roof not only reduces the amount of solar radiation absorbed, but is also very effective at re-radiating heat. Such thermal comfort is maintained by the dirt resistance property in Clean COLORBOND™ steel.

With the addition of Thermatech™ solar reflectance technology, darker coloured Clean COLORBOND™ steel products absorb less energy, creating the advantages of a cooler roof and a cooler building, similar to lighter shaded colours.

The Solar Reflectance Index (SRI) is widely used by green building rating tools to mitigate the Urban Heat Island (UHI) effect. SRI is a value that incorporates both solar reflectance and thermal emittance in a single value to represent a material’s temperature in the sun. SRI quantifies how hot a surface would get relative to standard black and standard white surfaces.

Table 1.0 on page 23 shows the SRI values of different types of roofing materials.

In hot tropical climates, low thermal mass materials such as steel with light coloured roofs and walls can be used to reduce energy demand for internal cooling.

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Ste e l

Solar Reflectance Index (SRI)

The sun's radiation hits the roof surface

Thermal Emittance: the relative ability of the surface to radiate absorbed heat

Solar Reflectance: the fraction of solar energy that is reflected by the roof

Convection

Roof surface layer

Absorbed energy

Net heat flux into roof

uninsulated clean colorbond™ steel roof

uninsulated conventional steel roof

Unexposed

56.0

56.0

24 months exposure

62.9

72.3

Unexposed

80.3

80.3

24 months exposure

110.3

154.0

roofing material

Roof Sheet Temperature °C

Radiant Heat Downwards W/sq.m

56.0 56.0

Roof Sheet Temperature °C - Unexposed

62.9 72.3

Roof Sheet Temperature °C - 24 Months Exposure

80.3 80.3

Radiant Heat Downwards W/sq.m - Unexposed

110.3

Radiant Heat Downwards W/sq.m - 24 Months Exposure

Clean COLORBOND™

Assume: 1000W/sq.m

Exterior temperature: 36°C

154

Conventional Steel Roof

Thermal emittance: 0.85

Dirt resistance also assists in cooling.

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Ste e l

Recycled Content Materials Steel is 100% recyclable and is globally one of the most recycled materials by volume. The amazing metallurgical properties of steel allow it to be recycled continually with no degradation in performance, and from one product to another. Steel is produced using two different processes: Basic Oxygen Furnace (BOF) and Electric Arc Furnace (EAF). Both processes consume recycled scrap steel to produce new steel. When steel completes its useful life, it can easily be recycled and not landfilled. According to the Steel Recycling Institute (www. recycle-steel.org) the post-consumer recycled content and pre-consumer recycled content from BOF production during 2009 was 24.3% and 9.4% respectively. Whereas the postconsumer recycled content was 74.3% and the pre-consumer recycled content was 17.8% from EAF production over a similar period of time. BlueScope products are produced using the BOF method. As you can see, the EAF process uses almost all scrap steel. One should not make erroneous environmental comparisons between steel made using the BOF and EAF processes since both are part of a complementary steelmaking system.

Frequently Asked Questions (FAQ) 1.What is SRI?

The Solar Reflectance Index (SRI) is a numerical expression of a constructed surface’s ability to reflect solar heat. SRI values are derived from a calculation in ASTM E1980 which uses a roof’s solar reflectance, thermal emittance and medium wind coefficient to generate a unit-less value from 0 to 100. A standard black (reflectance 0.05, emmitance 0.90) is 0 and a standard white (reflectance 0.80, emittance 0.90) is 100. The higher SRI value indicate a roof whose surface temperature is lower, thereby reducing heat gain in the living space beneath the roof. Green building rating tools such as Leadership in Energy and Environment Design (LEED) and Malaysia’s Green Building Index (GBI) encourage using building materials with high SRI values to reduce the intensity and impact of the Urban Heat Island (UHI) effect.

SRI Values required by LEED & GBI SLOPE

SRI

Low-Slope

≤ 2/12

78 or greater

Steep-Slope

> 2/12

29 or greater

ROOF

2. What is solar reflectance?

Solar reflectance is the proportion of the total solar radiation that is reflected back from a surface to the atmosphere. Any solar radiation that is not reflected is absorbed into the building envelope, requiring further energy to cool the building; or partially convected into the atmosphere and thus increasing the ambient air temperature in the surrounding environment (Urban Heat Island effect).

Most unpainted metallic coated steels have low thermal emittance (less than 0.30), while pre-painted steels (regardless of colour) have high thermal emittance values of around 0.85.

A roofing material with a higher thermal emittance will reemit absorbed thermal energy more quickly than a material with a low emittance and keep roof temperature lower.

4. What is Convection vs. Conduction?

Sunlight that is not reflected is converted into heat that dissipates through convection, conduction or radiation.

Convection is heat circulation due to air flow. An example is when hot air rises or cool air falls. Conduction is heat that transfers through a solid object. An example of this is heat being transferred from outside a building into the house (inside of the home). Radiation is heat which travels from a heat source to warm a surface. An example is the sun shining through a window directly heating the floor or furniture.

5. What is Thermatech™ technology?

A solar reflectance technology is incorporated into Clean COLORBOND™ steel to lower surface temperature by absorbing less heat from the sun. Thermatech™ optimizes the thermal performance of every colour in the standard Clean COLORBOND™ steel palette, without changing their appearance. Thermatech™ provides greater thermal comfort all-year round, whilst using less energy for air-conditioning and helps to mitigate the Urban Heat Island effect.

6. What is recycled content material?

Recycled content denotes the proportion of a product that is generated from post-consumer or pre-consumer material, and has become an important benchmark in green building rating tools. According to the LEED-NC guide, there is a default post-consumer recycle content value for steel of 25% which can be used regardless of documentation as steel is usually made from at least 25% post-consumer recycled steel. In cases where the steel recycled content is greater than 25%, documentation should be provided.

7. What is post-consumer material?

Post-consumer material is defined as the waste material generated by households or by commercial, industrial and institutional facilities in their role as end-users of the products, which can no longer be used for its intended purpose (e.g. demolished buildings scrap, old car bodies). Post-consumer material also includes the return of material from distribution chains.

8. What is pre-consumer material?

Pre-consumer (sometimes also referred to as post-industrial) material is recovered from the product manufacturing process before it is sold to end-users (e.g. offcuts from car manufacturers sold back to the steel industry). Reutilization of materials such as rework, regrind or scrapping within the process that generated them is not considered pre-consumer material recycling in terms of recycled content. However, recovery of these materials is still recycling, because materials that would have otherwise become waste are reprocessed and incorporated into new products.

3. What is thermal emittance?

Thermal emittance is the proportion of absorbed solar radiation that is radiated back to the atmosphere.

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Solar Reflectance (ASTM E903)

THERMAL emittance (ASTM C1371)

solar reflectance index (sri) - astm e1980**

Red Clay Tiles

0.33

0.90

36

Red Concrete Tiles

0.18

0.91

17

Aluminium

0.61

0.25

50

Galvanized Steel

0.61

0.04

37

ZINCALUME® Steel

0.67

0.30

63

Thredbo White/Eco White*

0.73

0.84

89

Off White/Enduring White*

0.70

0.86

85

African White/Amazing White*

0.70

0.86

85

Neutral Beige/Urban Beige*

0.69

0.85

83

Mosaic Blue/Nexus Blue*

0.68

0.85

82

Aloe Green/Wasabi Green*

0.68

0.86

82

Ivory Grey/Cosmic Grey*

0.67

0.85

81

Fantasy Yellow/Solaris Yellow*

0.67

0.85

80

Cape White/Cedarberg White*

0.66

0.86

79

African Cream/Durable Cream*

0.60

0.85

70

Shale Grey/Ultimate Grey*

0.59

0.86

69

Almond Beige/Breathless Beige*

0.59

0.86

69

Khaki Beige/Dynamic Beige*

0.55

0.85

64

Dune/Sahara Sands*

0.53

0.85

61

Armour Grey/Livid Grey*

0.43

0.86

47

Pale Eucalypt/Intimate Green*

0.42

0.85

46

Heritage Red/Enchanting Red*

0.32

0.86

33

Cape Red/Oriental Red*

0.31

0.86

32

Volcanic Grey/Ore Grey*

0.29

0.86

29

Safari Brown/Southern Brown*

0.29

0.85

28

African Blue/Two Ocean Blue*

0.28

0.85

27

Colonial Green/Graden Route Green*

0.27

0.86

27

Cape Charcoal/African Charcoal*

0.23

0.84

19

Ste e l

Roofing Material

Clean COLORBOND™ Steel

* Colour name in Clean COLORBOND™ Ultra ** SRI is calculated using ASTM E1980-01 with Medium Convection Coefficient (12) value reported. This data is approximate values only - may vary based on paint formulation and / or metallic coating thickness Table 1.0 Solar Properties of Roofing Materials

Following is comparison roofing sheet temperature: Roof Sheet Surface Temperature (°C):Thermatech™ vs. Non-Thermatech™ CLean colorbond™ steel - colours

Roof sheet surface temperature (°C)* thermatech™

non-thermatech™

Off White

50.3

52.5

African Cream

55.8

57.3

Shale Grey

56.3

60.5

Heritage Red

70.0

71.1

Volcanic Grey

71.5

75.3

Cape Charcoal

75.0

78.2

Calculated according to the ASTM E1980. Assume 1000W/sq.m.

For more information on BlueScope or its products please call Wayne Miller on 021 442 5420 or email wayne.miller@bluescopesteel.com.

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LSFB

Putting light steel frame building in the frame The advent of the light steel frame building (LSFB) method has been one of the most exciting developments in the international building industry in recent decades. Used increasingly across the USA, Australia and New Zealand, it was introduced to South Africa only relatively recently.

22 days after start-up on site, the LSF floor and floorboards have been installed, most of the wall panels are up, and roof beams are in place.

T

he local mainstream building market has been cautious in accepting LSFB, yet the building method’s manifold advantages – substantially faster construction time, energy- and cost-efficiency, and significant environmental benefits – are grabbing the attention of a growing number of industry players.

So it was no surprise when in March 2013, the producer of the popular EkoStyl programme on DStv’s kykNET channel, Francois van Wyk, approached the Southern African Light Steel Frame Building Association (SASFA) to participate in a 13-part series on ‘eco-friendly building.’ The idea was that the EkoStyl cameras would document the full-scale renovation of a masonry-built house – including the addition of a 140m² second storey using LSFB – and broadcast progress in weekly installments.

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“Architect Joe van Rooyen, from JVR Architects, knew we wanted to make use of ‘green’ building methods, and since we were going to do the renovation in less than 10 weeks, LSFB was really the only option for the second storey,” Van Wyk said. “When we subsequently started researching LSFB, we came upon the many eco-friendly benefits of this building method, which were obviously right in line with the concept and format of the show.”

John Barnard, SASFA director, explains that LSFB is significantly more energy efficient than more traditional construction methods, both with regard to the ‘embodied energy’ of the materials and components, as well as ‘operational energy,’ relating to heating and cooling of the building over its design life.

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LSFB

27 days after start-up and the roof cladding is up.

A recent research project carried out by the CSIR, for example, indicated that an LSF building would require less than half the energy needed to heat and cool a masonry residential building to comfortable internal temperatures.

Nyschens and his building team started in early May. By that time the first batch of floor beams had been delivered, as well as fasteners, the shutterply (plywood), fibre cement floor boards, and the rubber underlay.

Steel is also a reusable and recyclable material, which means that it reduces the overall carbon footprint of the building project. It should be noted that an LSF building, built to SANS 517 (the building standard for light steel frame building in South Africa), fully complies with the requirements of SANS 10400 XA, and, in fact, also that of the more stringent SANS 204 (energy efficiency standard).

In the two places where the second storey would not be sufficiently supported by masonry walls, hot-rolled I-sections provided an elegant support solution. As Barnard explains, “LSFB can be used easily in conjunction with heavy structural steel, which may be required for long spans or large cantilevers, or to be exposed as part of the architectural expression.”

When Barnard first visited the site in Parktown, Johannesburg, in late April, some of the walls of the existing masonry structure were still being broken down to accommodate the extensive renovations that were to be done to the groundfloor level. “The TV series had already started airing, with the final programme scheduled for 25 June – only two months away! So it was going to be a tight programme, even for LSFB,” Barnard said.

The building contractor appointed by SASFA to do the job was Ian Nyschens, of IKN Construction. Nyschens had been involved in the building of some large upmarket LSF houses – including the 800m² mansion in Xanadu Eco Park, overlooking the Hartbeespoort Dam in the North West Province. “I have been involved with light steel frame construction for about six years now,” Nyschens said. “I enjoy working with steel. There is less site rubble, and the building process is extremely accurate.”

Nyschens met with the architects on site and took detailed measurements of existing masonry walls, since there is always some deviation from plan dimensions when working with brick buildings. Accurate site measurements were necessary for the manufacturing of the light steel floor joists and wall frames to ensure that everything fitted.

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Once the I-sections were in place, Nyschens was able to install the floor joists and the shutterply floorboards. The lightweight floor was constructed using 18mm-thick shutterply, followed by a 3mm thick layer of closed cell foam rubber intended to absorb impact sound, and finished off with 15mm high-density fibre-cement board. The mass of the lightweight floor came to only 50kg/m², compared with 350kg/m² for a 150mm-thick reinforced concrete floor. And after only seventeen days on site, the floor was installed and the first wall panels were being erected.

The walls were covered on the outside with 10mm-thick, highdensity fibre cement boards, provided by Everite. Then, 10mm-thick polystyrene strips were placed on the steel frame to serve as thermal break between the outer cladding and the frame, in compliance with the requirements of SANS 517. The light steel wall frames were covered on the outside with a vapour-permeable membrane to enhance the waterproofing of the building and to prevent any air movement through the wall panels. Finally, the wall panels were braced by the use of strips of high-strength galvanized steel, strengthening the resistance of the wall panels to wind forces.

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LSFB

Light steel floor joists on top of existing masonry walls.

Barnard explains that this process took only a few days with very little cutting necessary, and with minimal waste of material. “This demonstrates another way in which LSFB saves time: the lightweight steel frame is manufactured and assembled to spec in the factory and then erected very quickly on site.

Once it is in place, the building can be enclosed and internal finishes, such as tiling and painting, can start much sooner than with a masonry structure,” Barnard says.

For the ceiling under the floor of the second storey, the team used 15mm-thick fire resistant gypsum board, to meet the fire rating requirements. They put 50mm-thick pink fiberglass insulation in the ceiling, for acoustic insulation.

“Time can also be saved when using LSFB by different disciplines working in parallel. For example, LSFB window apertures can be agreed upon upfront with the glass and aluminium contractor, even before the light steel frame walling is installed, since the framing system is extremely accurate,” Barnard says.

Nyschens explained the particular challenges that faced the LSF building team. “The site was difficult to work on. It was very hilly, and with work only half-finished on ground level, we had to contend with deep trenches and uneven terrain. There were also two building teams working concurrently on a tight building programme. With all that, however, it turned out great,” he said.

Light steel joists were used for the roof structure, and installed at 1.2m spacings. Purlins consisting of cold-formed top hat sections, made using high strength galvanized steel sheet, are fixed to the roof beams using self-drilling screws. The roof sheeting (ArcelorMittal's Chromadek was used for this purpose) was then fixed to the purlins, again, using self-drilling screws. As with the all the light-gauge steel used in the frames, the screws have to comply with stringent corrosion resistance standards to ensure the long, maintenance-free life of the building.

“Insulation in the ceiling under the roof is of paramount importance for a well-insulated building – to prevent losing heat in winter, and gaining heat in summer. We used 135mmthick glasswool insulation, as required by the light steel frame building standard (SANS 517),” Barnard explains.

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Both the walls and the ceilings were skimmed with a thin layer of gypsum cement – providing a perfectly smooth surface for painting.

Nyschens added that light steel frame building is ideal for renovating or adding a second floor to an existing old brick house. “Usually it will not be necessary to beef up foundations, and the whole process can happen much quicker,” he said.

Producer Van Wyk said that the EkoStyl production team had been extremely impressed with SASFA and its partners. “On a daily basis, we were amazed by the progress with the light steel frame building,” Van Wyk said.

“Now is a very exciting time for LSFB in South Africa, as people increasingly realise that it can be used for a range of different applications and recognize the considerable benefits of the building method, both practical and environmental,” said Barnard.

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LSFB

Nearly complete!

He said he believed that exposure on programmes such as EkoStyl would help to increase awareness amongst the public and the professions about the advantages of LSFB, and dispel beliefs that heavy masonry or reinforced concrete are prerequisites for quality structures. He said that SASFA and the TV producers had been receiving a steady stream of enquiries from architects and future home-owners since the EkoStyl program had been on air.

“There is no doubt that the prejudices in South Africa against unconventional building methods such as LSFB are on the wane,” Barnard said, “and the more people see quality structures being built with light steel, and realise its environmental and other benefits, the more they will open up to the new methods of construction.”

The major materials sponsors for the EkoStyl project were ArcelorMittal, who supplied the high strength galvanized steel for the frame, and the Chromadek for the roofing; Everite, who supplied high density fibre-cement Nutec boards for external cladding and floor boards; Saint-Gobain Gyproc and Lafarge Gypsum, who supplied gypsum board for the internal lining of the walls and ceilings, and Saint-Gobain Isover, who supplied glasswool insulation for the walls and ceilings. Trumod sponsored the steel frame design and manufacture. The other sponsors of products and services were Mike Hull Consulting Engineers, Clotan Steel, Global Innovative Building Systems, Kare, Simpson Strong-Tie, Marshall Hinds, Trowel-on-textures, Speedfit Africa and Firstclass Projects. SASFA was responsible for the project coordination.

17m clear span “market/school”, Lephalale

Midrand

Mulder Kruger Call: 082 320 1959 mulder@trumod.co.za

Student accommodation – Stellenbosch University

Professional design, manufacture and erection of light steel frame buildings and structures

www.trumod.co.za

The Smart Roof People In the fast moving, competitive world of construction, you only have one chance to get it right. So it’s a smart idea to choose quality products that won’t let you down. With over 50 years of technical know-how and practical experience, GRS is one of the largest manufacturers of quality metal roofing products in southern Africa, exporting to over 20 countries worldwide. Stateof-the-art machinery and stringent quality checks ensure a superior product manufactured for ease of installation and a perfect fit. Through ongoing research and testing, GRS continually develops groundbreaking improvements.

Our ingenious Klip-Lok and Klip-Tite systems have introduced transverse stiffeners (a first in South Africa) designed to achieve a more balanced system and a significantly higher wind uplift resistance. It’s smart. Really smart.

SUPPLIERS OF CONCEALED FIX, PIERCED FIX, DECKING SYSTEMS, GRIT COATED METAL TILES AND VENTILATION SOLUTIONS So when you’re looking for roofing solutions, get smart with GRS. The smart roof people. Talk to us, THE SMART ROOF PEOPLE on 011 898 2900 or visit www.globalroofs.co.za or email info@globalroofs.co.za

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GRS-IBR

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Wo m e n ’ s m o nth

Women in Roofing

Bambalela Bolts (Pty) Ltd Established in 2006, Bambalela Bolts (Pty) Ltd is a woman-owned fastener company, which supplies an extensive range of fasteners, and boasts a standard range holding of over 9000 items. They also fabricate HD bolts, U bolts and stud bolts in a range of grades to client’s requirements. Bambalela Bolts (Pty) Ltd supplies to local companies in South Africa and to projects all over Africa and beyond. The company is based in Johannesburg, South Africa.

S

A Roofing recently had the opportunity to chat with owner, Tania Williamson, about her company and experiences of being a woman in a predominantly maledominated industry.

SAR: What exactly does Bambalela Bolts do?

Tania: We supply a large range of fasteners (which are procured) and also fabricate various bolts.

SAR: As the owner of Bambalela, what is your role in the running of the business and what are some of your responsibilities?

Tania: I am Bambalela. I own the company and am involved in the management and strategic direction of the company.

SAR: What led you to becoming involved in the roofingrelated industry?

Tania: My dad owned a tool and die company in Chamdor, and was also a draughtsman. During school holidays I didn’t go to the movies, but rather I worked in factory with my dad, grandfather and grandmother, and operated milling machines, lathes and bending presses.

SAR: What are some highlights and lowlights of the business?

Tania: There are no lowlights, only challenges. Every day is different, with different projects and different clients. We work on different projects in and outside South Africa and Africa. I spend a lot of time travelling to sites, and work with engineers and draughtsmen on site. We also deal with international companies. My days are generally lots of fun. We travel as a group, with hard hats, safety boots, yellow jackets, throughout Africa and Europe. I find that by going to sites, we get more done, and when I speak to the project managers and engineers, the visit is far more fruitful than via phone – better to put a face to a voice. Being there on site physically also makes you feel more involved/hands on.

SAR: What are the benefits of being a woman in a traditionally male-orientated industry?

Tania: When I was studying, I was the second woman ever in the engineering faculty, which was sometimes very challenging. Women are starting to make their mark and are being acknowledged for the fact that they do have brains and skills, and not only by this male-dominated industry, but by society at large.

SAR: How did Bambalela Bolts come to be?

Tania: It was a start-up. All I had was some capital and a bakkie, and I have grown it to what it is now.

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Wo m e n ’ s m o nth

SAR: What are the biggest challenges for you on a personal level and how do you overcome these?

Tania: I find that projects are not always granted on merit.

This should be addressed, so that better quality workmanship can get out there.

SAR: What do you feel are challenges for women in the South African construction industry?

Tania: It is hard for women to be taken seriously in this industry. It is often the case that men tend to prefer to deal with other men, and are not always interested in what women have to say, regardless of whether you are telling them the same thing. Interestingly, the young women engineers and architects filtering in now are more accepted by the men in our industry.

SAR: What do you think can be improved upon in order to facilitate a more fair working environment for women in this industry and in South Africa as a whole?

Tania: By looking at skill and not at gender. Projects should be awarded on merit. People would think that sexual harassment would be an issue for women in construction, but I have to say that when I am on site I am always treated with utmost respect – maybe I have no problems because I am firm and direct.

SAR: How would you like to see women occupy their own space in the industry in the future?

Tania: Women must grow on merit and skill, and be acknowledged and given accolades where they are due.

Women must strive to own their own companies, because women have an innate ability to multi-task, and can manage the pressures of having to be the boss, have staff that rely on them, and still be mothers and wives.

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One of the reasons I wanted to start a woman-owned company with mostly women staff is because I found that women are more focussed and driven, they give more, and this is because they know they also have people relying on them. I must admit, as the owner I still haven’t gotten the balance right. I have two children in high school, a son in grade 10 and a daughter in grade 12, and I am still mostly at the office from 7am to very late at night. I give 110%, and am proud of the fact that I am one of very few women who own their own company in this industry.

SAR: How did you choose your company name?

Tania: It is derived from ‘Bambelela,’ which is Zulu for ‘hold on’ or ‘never give up,’ and this describes our fasteners and bolts perfectly.

SAR: What else should people know about Bambalela Bolts?

Tania: Visit our website – you will see that we do lots of charity work. I love getting involved with the community, aiding children in Africa. It is very fulfilling, and I think that this ties in with a woman’s unique motherly instinct.

SAR: Do you have any interesting anecdotes about being in charge?

Tania: Yes! I can’t tell you how many times people phone in to speak to MD, and when they hear my voice they can’t believe a woman is in this position. But once we start interacting they soon feel more at ease.

For more information visit www.bambalela.co.za.

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LSFB

Eco-friendly Building with Light Steel Frame Building and Fibre Cement Cladding The kykNET DStv channel recently featured a 13-part series on the EkoStyl programme highlighting the renovation of a masonry house and the addition of a 140m2 upper floor built using the light steel frame building (LSFB) system.

Light steel frame building erected to existing masonry structure with no reinforcing required to superstructure brickwork or foundations.

T

32

he programme theme ‘eco-friendly building’ was reinforced by showcasing to viewers the features and benefits of sponsored products, building methods and ideas. Producer of the show, Francois van Wyk and presenter, Braam Naudé set out to demonstrate not only how to make an existing home eco-friendly, but also the eco-friendly benefits of the LSFB system – right from the components being manufactured through to installation.

One of the key components to the EkoStyl LSFB secondstorey addition is the Nutec external cladding and floor boards supplied by Everite Building Products.

Sponsors of the LSFB system for EkoStyl, co-ordinated by the Southern African Light Steel Frame Building Association (SASFA), were given air time and viewers were able to appreciate the benefits LSFB system.

“When fibre cement is manufactured, the water used in production is recycled many times, solid waste is recycled, and sustainable (asbestos-free) raw materials are used."

Speaking to Braam Naudé on the attributes of Nutec fibre cement, Craig Cronje, sales and marketing director for Everite Building Products, explained that the eco-friendly cycle starts with the manufacturing process of the product.

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LSFB The finished installation clad with Nutec High Density fibre cement board. The overall impression is the appearance of a traditional solid structure, with the benefits of rapid installation and superior consistency and quality.

“In terms of the finished product, there is minimal energy consumption in transportation and installation. The delivery of Nutec material to site was done in one load comprising 170m² of external cladding – 10mm thick Nutec High Density Flat Sheets (1200 x 3600mm) and 140m² of 15mm thick Nutec High Density Floor Boards (1200 x 3600mm). This equates to an approximate mass of less than three tonnes. This is substantially less when compared to traditional building materials used for the same wall and floor area,” he said.

On-site these two components occupied an area of less than 5m². Cronje went on to say, “Considering that the site area for material storage and handling was further exacerbated by an uneven terrain and limited vehicle access, using any other building method would have severely impeded the construction process and speed of erection.”

34

Installation of Nutec floor boards and cladding requires minimal labour under skilled supervision. The finished installation gives the appearance of a traditional solid material, with the benefits of rapid installation and superior consistency and quality.

The Nutec fibre cement substrate provides excellent durability and impact resistance. Its dimensional stability makes it suitable for all climates, as well as providing insulation from extreme heat, cold, and noise. A mechanical fixing system makes installation easy, while at the same time providing a strong connection to the steel framing and allowance for seismic movement.

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S.A. DISTRIBUTOR: KARE INDUSTRIAL SUPPLIERS JOHANNESBURG (011) 334 0922

DURBAN (031) 705 5610

CAPE TOWN (021) 592 4577

PRETORIA (012) 332 4073

PORT ELIZABETH (041) 451 1447

W e ath e r ba r r i e r s

Marshall Hinds Pty (Ltd) Proud Sponsor of Tyvek® HouseWrap for the recent 13-part TV series on EkoStyl, kykNET Tyvek® Housewrap, vapour permeable membrane, ensures the optimal balance of air resistance, water resistance and vapour permeability in the building envelope.

T

yvek® HouseWrap is suitable for all buildings using light steel frame, timber construction and also traditional building materials. Tyvek® Housewrap is the energy saving barrier that pays for itself within the first three years through energy saving alone.

For more than 30 years, Marshall Hinds Pty (Ltd) has been the exclusive South African distributor of top graphics, gardening and construction ranges from DuPont, the global leaders of market driven science. The DuPont Building Innovations Division is committed to making homes and building systems that help reduce operating costs, that are safer, sounder, look newer for longer and provide greater environmental sustainability. DuPont is at the forefront of building science, with brands that include DuPont™ Tyvek®, Corian®, Zodiaq®, Energain®, Typar®, and SentryGlas®.

Marshall Hinds supplies a comprehensive product offering of DuPont wall and roof barrier materials as well as a variety of tapes.

In combination these products ensure building integrity, optimal energy efficiency and personal comfort of the building's occupants.

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These products form an integral part of good building practice and add personal comfort and energy conservation benefits that translate into real savings on energy bills.

Homes and commercial buildings are the largest capital investment that you will ever make.

Marshall Hinds has weather barriers that are green, sustainable and the ultimate in energy efficiency and cost saving.

For more information contact: (t) 011 627 7750 | 021 706 3496 (w) www.marshallhinds.co.za Member of the South African Light Steel Frame Building Association.

W e ath e r ba r r i e r s

• DuPont™ Tyvek® HouseWrap for optimal balance of air resistance, water resistance and moisture vapour permeability that are key to an energy saving barrier.

• DuPont™ Tyvek® Soft underlay for discontinuous roofing and walls, protects buildings from the hazardous effects of rain, snow, water, moisture and wind, thereby preserving the R-value of the building.

• AirGuard® Reflective 100% airtight vapour control layer with a very low emissivity surface which significantly boosts the thermal insulation in the building resulting in a 15% saving on building energy costs. AirGuard® also reduces the moisture migration into the construction.

• DuPont™ Tyvek® Enercor® vapour open roof underlay with a metallised low emissivity surface reflects heat in summer and reduces radiated heat loss in winter. Moisture management of a building is enhanced when Tyvek® Enercor® and DuPont™ AirGuard® are combined.

• Butyl Tape compatible with brickwork, blockwork, masonry, timber, metalwork and most plastics.

• FlexWrap™ NF expandable tape is suitable for round and custom-shaped windows, openings and doors where fasteners cannot be applied.

• Tyvek® HouseWrap Tape for sealing HouseWrap overlaps and making good around penetrations, pipes and windows.

S h i n g le s

Global Innovative Building Systems supplies Owens Corning Shingle Roofing System to Africa Global Innovative Building Systems’ Managing Director, Tammy Bywater, says that “the Owens Corning Shingle Roofing System is an ideal option for any roofing project and is very versatile. Using this system, you get your roof up and forget about it - it’s an investment!”

T

he roofing shingles are designed with a strong inert bitumen-impregnated fiberglass core, embedded with ceramic granules that are colourfast, weather-resistant and maintenance free. The available colour variations are complemented by hip and ridge shingles which give the roof a uniform appearance.

38

Once properly installed the shingles will form a solid bonded unit through the adhesive backing strip which is activated by the sun's heat and ensures that the roof is watertight. Access through the roof is also minimized with the addition of a solid wooden OSB board fixed directly onto the trusses and to which the shingles are secured.

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“A huge advantage of the shingle roofing system is the fact that it is very lightweight compared to alternative roof coverings. In these times transport is a major cost and we have supplied and installed roofs in various African Countries for this very reason," remarks Tammy. “Excellent wind, algae and fire resistance are also major contributing factors to the product’s success.”

S h i n g le s

The outcome is a strong and durable roofing solution, which also incorporates the Ventsure Ventilation system. This patented product generates air movement in the attic space, balancing both indoor and outdoor temperatures and prevents excessive heat loads trapped in roof voids while condensation is also minimized.

Global Innovative Building Systems is represented via an agency network throughout South Africa operating from our head office in Gauteng. We have had a very favourable response from the market that affirms that Africa is turning to Owens Corning Roofing Shingles because it’s worth it!

For more information, contact: (t) 011 903 7080 (e) tammy@gissa.co.za (w) www.gissa.co.za

Product attributes:

• Bold colours • More contrast • Enhanced protection • Aesthetic appeal • Security benefits • Lightweight (22kg per m2) • Versatility in design • Ease of erection • High wind resistance • UL A1 fire rating

Owens Corning’s High Performance Shingle Roofing System

LSFB

Light Steel Frame – buildings of the future Trumod, specialist designers and manufacturers of light steel frame structures, were asked to supply the steel frame for the EkoStyl project.

T

he programme theme ‘eco-friendly building’ was reinforced by showcasing to viewers the features and benefits of building with alternative systems and products. Producer of the show, Francois van Wyk and presenter, Braam Naudé set out to demonstrate not only how to make an existing home eco-friendly, but also the eco-friendly benefits of the LSFB system – right from the components being manufactured through to installation.

The design of the steel frame has to satisfy both the structural integrity and the aesthetics of the building, a challenge that highlights Trumod’s competitive advantage in this industry.

Having completed a number of similar and larger residential buildings, Trumod fully appreciated the challenge that this type of build brings. The brick and mortar build was still in progress and access was restricted by all the building activities taking place.

Trumod is one of only five manufacturers worldwide that are in possession of both FrameCAD and Scottsdale machines.

With this advanced technology at the company’s disposal, the best of either manufacturing systems – or even a combination of the two for more cost effective solutions – is on offer.

Trumod designs are to SANS 517, the standard set in conjunction with SASFA, the controlling body for light steel frame, and so clients are provided with buildings that are designed to suit diverse South African conditions.

Trumod was presented with the architectural design and ‘as built’ measurements, which form the essential foundations of the detailed design.

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Over the past four years, Trumod has provided clients with a design service that is not only innovative, but of outstanding quality. The company’s designers have many years of experience and can offer solutions to complex architectural challenges.

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LSFB

Student accommodation – integration of LSF and structural steel.

The assembly is simplistic, as all members have been accurately pre-cut and punched. No jigs are required and members can be bolted together using local labour.

Magnesium oxide boards

Trumod imports and distributes high quality MgO boards for the cladding of structures. Boards are manufactured under ISO 9001 to EU standards and carry the ‘CE’ mark. This product has properties that compare favourably with both fibre cement and gypsum products and is priced competitively.

Trumod building solutions: Light steel framing

Trumod frames have been used in a variety of innovative building projects and the company’s expertise in this regard ranges from the erection of simplistic structures for relief housing, to multi-storey buildings and large warehouses. The frames, as with the trusses, can be flat-packed for costeffective and easy transport.

Light steel roof trusses

Trumod’s optimized trusses offer cost-effective support for any type of roof cover. The company prides itself on being equipped to service the whole roofing spectrum, ranging from mass-produced, affordable housing, to complex, residential mansions and commercial warehouses with clear spans of up to 30m. Trusses can either be flat-packed and assembled on site or, in the instances where large quantities or long spans need to be rolled, a machine can be moved to site and trusses can be manufactured in situ.

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Although Trumod specializes in design and manufacture, a complete building package is also on offer through a number of accredited builders that specialize in steel frame construction.

Trumod products are erected not only in South Africa, but in all SADEC countries and further north.

Trumod is one of very few manufacturers that have the design capabilities and manufacturing capacity to meet any demands and are proud to supply cost-effective quality products to satisfied customers.

For more information, contact: Gauteng Mulder (c) 082 320 1959 Western/Southern Cape Tony (c) 071 896 7089 Visit www.trumod.co.za.

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Roo f Tr uss e s

Ultra-Span roof structures for Uranium mine Tasked with erecting roof structures on a highly regulated mining site, MiTek-licensed truss suppliers, Max-Span, armed with MiTek’s Ultra-Span roof system, rose to the challenge.

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ue to very stringent safety standards and precautions on the Swakopmund Uranium mine, 70km east of Swakopmund in the Dorob National Park, the Max-Span team decided to assemble completed sections of the roof structure on the ground.

Using an exact footprint of the building, all the roof trusses were pre-assembled on the ground into manageable sections of 18m x 5m modules. The Ultra-Span roof system, with its unique flexibility in assembly, still permits for some site adjustments even if all the steel profiles have been made to an exact length.

This advantage is extremely useful in more remote areas and especially in the rest of Africa, where buildings are not always in full accordance with drawings.

The individual roof sections of 18m x 5m weighed only 1.5 tons including all rigging. Due to the need to have a reach of 21m, an 80 ton crane was, however, still required for this relatively light module.

Used as construction camp buildings, the structures will later be converted to offices and other utility buildings for mine workers.

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The above-roof erection not only saved on erection time, but also on expensive scaffolding costs and the associated dangers of working at height.

For more information, contact: (t) 011 237 8700 (e) marketing@mitek.co.za (w) www.mitek.co.za

Roo f Tr uss e s

The Ultra-Span roof system is one of the lightest roof systems in light gauge steel, very seldom exceeding a mass of 9kg/m², even for very large structures. This advantage further assists in the rapid erection of larger roof structures.

H e a lth & saf e t y

Ladder Safety in Construction Ladders can be found on almost any construction site and it’s very easy to neglect the potential safety hazards they pose. Maintaining safety regarding ladders starts with the appointment of a competent person to inspect ladders.

Photo by Design By Zouny.

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t is important that all ladders are inspected when first delivered onto site and thereafter at intervals not exceeding monthly. The findings of the inspections must be recorded in a ladder register. Make sure the register is kept up to date.

These inspections must be done by a competent person that is appointed in writing.

Extension and straight ladders must always be secured or tied at the top before use. This will stop the ladder from moving while climbing up or down. If the ladder cannot be secured it must be held in position by another person whilst in use.

Items that must be checked when inspecting ladders:

Always climb or descend a ladder facing the ladder. Make sure to have both hands free to hold onto the rungs at all times.

Don’t carry tools or equipment in your hand whilst climbing a ladder.

• On step ladders check the hinges, stays, braces and stiles • On extension ladders check the ropes, rungs, stiles and safety latches • On straight ladders make sure the rungs, stiles and feet are in good condition and that the ladder is always positioned at the correct angle The supervisor must remove any damaged ladders from site immediately and ensure that they are not used. As paint conceals defects, use varnish or two coats of oil instead, to preserve wooden ladders.

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Never assemble or join ladders. This is a very dangerous practice and is not permitted.

Ladders must never be used horizontally as walkways or as scaffolding, they are not designed for this and will not be able to withstand a person’s load and will lead to serious injury.

Make sure the ladders that are used on site protrude at least 900mm above landing, platforms and roof areas. This will allow a person to safely transfer from the ladder to the platform.

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When you are done with a ladder make sure it is cleaned and stored off the ground and protected from being damaged.

Ladders should be hung on brackets against a wall.

Make sure that all the fixed ladders on your site that are higher than 5m have cages around them or fall arrest systems in place to ensure the safety of persons using it.

For more information on Ladder Safety and other related safety topics visit www.safebuild.co.za

Author:

Neels Nortje Health & Safety Manager Master Builders Association KwaZulu Natal www.masterbuilders.co.za

Throughout Africa, we supply steel frames, roof trusses, steel roof sheets, steel tiles, flashings and gutters.

Contact us for a comprehensive list of products and services.

Ora et Labora

Tel: +27 (016) 986 8000 www.clotansteel.co.za

H e a lth & saf e t y

Always place a ladder so that its feet are a quarter of its length to the top support from the object against which it is resting (1:4 Ratio). This represents an angle of approximately 75 degrees.

Gla zing

Structural Glazing for Cape Town’s Tallest Building Entrusted to Dow Corning Sealants Dow Corning structural glazing sealants, supplied by a.b.e. Construction Chemicals, are being used in the installation of the façades on the 139m-high Portside Tower, Cape Town Foreshore’s new icon, which, on completion, is destined to be the tallest building in the Cape Town CBD.

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amantha Ferreira, a.b.e.’s Brand Manager: Silicones, Sealants and Special Adhesives, says four Dow Corning products are being supplied to Compass Glass, and its sister company the Mazor Group. Compass Glass, an a.b.e.

Quality Bond applicator, specialises in the beneficiation, fabrication and distribution of glass, including the manufacture of laminated and toughened safety glass, and doubleglazed units.

The four Dow Corning products being used by Mazor Engineering, the façade sub-contractor to the main Contractor, Murray & Roberts, for the R1.6 billion development jointly initiated by Old Mutual and the First Rand Group, are: • DC 993 structural glazing sealant, a two-component neutral curing silicone formulation specifically developed for the structural bonding of glass, metal and other building components. The sealant has been successfully used in prestige applications all over the world, including 15 Alice Lane Towers in Sandton, the Arabella Sheraton Grand Hotel at the Cape Town International Convention Centre, the Old Trafford sports stadium in Manchester and the British Airways London Eye, in London.

Cape Town’s Portside Tower, and its impressive structural glazing installed by Mazor Engineering with sealants supplied by a.b.e. Construction Chemicals, will have to cope with the Cape Town Foreshore’s high winds, sometimes blowing at over 110kms per hour.

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• DC 3362 insulating glass sealant, also a two-component neutral curing silicone formulation for the manufacture of high performance glass units, typically used as secondary sealant for insulating glass in structural glazing. DC 3362 secondary sealants are capable of withstanding different climatic loads and have exceptionally low heat transmission. The product was used for the external façade of the world’s most inclined high rise building: the Capital Gate in Abu Dhabi. The building has about 12 500 glass units which form more than 720 diamond shapes.

• DC 813 C, a low modulus, neutral cure silicone sealant particularly suitable for weather seals, expansion and perimeter joints in buildings, both internally and externally. The sealant has a joint movement capability of around 50% and provides strong adhesion to a variety of substrates.

• DC 1200 OS primer, a UV-traceable air-drying primer used to improve both the quality and speed of adhesion of the structural glazing sealants to a wide variety of substrates. The incorporation of a small amount of UV tracer allows for the tracing of correct primer applications by using a UV lamp.

Portside Tower, and its impressive structural glazing, faces the challenge of coping with the Cape Town Foreshore’s notoriously high winds, sometimes blowing at over 110kms per hour in very hot summer conditions.

Chris Sharpe, a.b.e. Technical Sales Consultant in Cape Town says the client has been exceptionally impressed by the performance of the Dow Corning structural and insulating glazing sealants. “In fact, Compass Glass and its sister company, Mazor Engineering, have commented favourably on the high level of technical support and constant monitoring by both a.b.e.’s and Dow Corning’s technical management,” he says.

The 32-storey Portside Tower – jointly designed by DHK and Louis Karol Architects – will comprise offices, retail outlets, coffee shops, and a state-of-the-art banking hall on the ground floor. The building will offer over 52 000m² of office space, 1 200m² of retail and banking space, and nearly 1 400 parking bays.

The building’s ‘green’ design is aimed at achieving a 5-Green Star SA Office rating, as administered by the Green Building Council of SA of which the Chryso Southern Africa Group is a member. Among the skyscraper’s many environmentally friendly features is that all 33 floors of the glazed façade have been designed for disassembly for recycling at the end of the building’s operational life.

Construction of the fast-track project, scheduled for completion around the end of this year, is aided by a locally developed hydraulically powered self-climbing formwork system that climbs upwards as the floors are constructed.

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N e ws

Improvon Boosts ‘Green’ Credentials

With the majority of its new buildings utilising sustainable practices and renewable technologies to boost their ‘green’ quotient, industrial property specialist, Improvon has staked its claim as one of the country’s greenest property developers.

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ccording to Improvon Development Executive, Stefano Contardo, the company fully supports all legislation requiring developers to comply with the increasing number of regulations in terms of environmentally friendly building practices.

However, he insists that Improvon has proactively adopted a green approach, saying that it can make both economical and ethical sense to ensure that all its developments incorporate the most current technologies in terms of green architecture.

“Any development housing a large number of people will have some impact on the environment; it is Improvon’s aim to ensure that this impact is minimal, and to strive to reduce the carbon footprint of each of its developments as much as possible,” he says.

“If we cannot eliminate our environmental impact entirely, we must at least try to mitigate it. For some tenants, this means a whole brace of technologies and practices, for others it translates into the bare minimum.”

Two of Improvon’s flagship green developments are Longmeadow Extension 11 and the Green Precinct at Gosforth Park.

The Green Precinct makes extensive use of polycarb fitted to the underside of the eaves, or other strategic elements of the building, increasing the amount of indirect natural light allowed into the warehouse, reducing dependency on lighting.

Windows are doubled-glazed for optimum temperature control and walls are insulated using a plaster insulation product. There are photovoltaic panels (PV) to generate power, rain collectors to provide grey water for use in toilet

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cisterns, and an attenuation pond that collects storm water and other run-off for irrigation.

Similar technologies were employed at the prestigious Longmeadow Extension 11, where tenants, Kalahari.com/MIH Africa and TOG SA recently took up residency. Here, Improvon has also rehabilitated a stream running through the property and utilised indigenous landscaping and open space to add to the aesthetic appeal and create a highly-sought after working environment.

But Improvon is not only going green on developments for tenants – it walks the green talk at its head office in Longmeadow Business Estate.

Here, it is in the process of upgrading the building and started with the most practical changes that can be made to an existing building to make it greener. These include switching to energyefficient lighting and fitting photovoltaic panels to generate electricity and supplement grid-fed supply during the daytime.

In addition, given water’s increasing scarcity as a resource, moisture sensors are being used to limit unnecessary irrigation.

If it is raining or if the garden is sufficiently moist, the irrigation system will not switch on. All of these changes reduce Improvon’s dependency on traditional power sources and its carbon footprint.

“Regardless of the degree, our basket of green innovations is there to help tenants to fulfill their moral obligations, while in the long-term presenting significant cost benefits. We hope that they act as a catalyst for more and more tenants to instill their own environmentally friendly principles,” said Contardo.

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(Pty) Ltd

(Pty) Ltd

TM

TM

A sb e sto s

R&D Contracting makes asbestos removal easy There is no doubt that asbestos is an extremely hazardous material, despite the fact that it was historically used extensively in the construction industry.

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ts widespread use in the past was mainly due to its heat and fire resistance, as well as its insulation properties.

However, the fact that its use has been so widespread in the past, coupled with the dangers it poses at present, means that it is vitally important to ensure that the contractor chosen to assist with its removal is not only registered, but also has the experience and the right equipment to ensure effective removal and safe disposal at a registered land fill site.

R&D understands the potential risks involved in the removal of all types of asbestos and, as such, utilises only the highest quality equipment. The company establishes an Asbestos Decontamination unit on site, which facilitates staff showering on completion of the day’s operations, while Bidum cloth and sand traps capture any loose fibres. These are then disposed of, along with the discarded asbestos suits and dust masks, in line with current legislation.

R&D Contracting is an approved and registered asbestos contractor, subscribing to the current regulations of the Department of Labour (DoL). Moreover, the company has completed a range of asbestos-related projects and R&D counts amongst its guiding principles a strong focus on health and safety, quality controls and high-level supervision through the entire process of the job. This enables it to meet the high expectations of service delivery in the market, while remaining true to its business philosophy that focuses on quality, reliability and service.

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PROFESSIONAL USER'S GUIDE THE ONLY ANNUAL PUBLICATION IN SOUTH AFRICA DEDICATED ENTIRELY TO INNER AND OUTER ROOFING SYSTEMS

Presented in categories and sub-categories, the SA Roofing & Insulation Professional User’s Guide connects suppliers, manufacturers, architects, specifiers, installers, contractors, developers, commercial and industrial property owners as well as key industry professionals, including associations, institutes and other leading industry representative bodies.

BOOKINGS CLOSE 30 TH SEPTEMBER TO BOOK YOUR SPACE CONTACT: (t) 0861 SA ROOF (727 663) (e) info@trademax.co.za (w) www.trademax.co.za

ANOTHER UNIQUE PRODUCT FROM

CSR

Zurich Insurance Company SA Ltd teams up with Ceratech & Friends to Uplift Childcare Centre in Need A daycare centre for children aged 0 to 6 years was recently selected by the Zurich Insurance Company South Africa Limited to receive a much needed makeover as part of the insurer’s annual Global Community Week – an initiative in which Zurich employees partner with members of the community and other businesses in order to assist organizations in need.

After.

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inyazwanda Daycare Centre, located near the Chris Hani Baragwanath Hospital in Diepkloof, was one of a number of schools selected by the insurance company to be assisted by one of the company’s various divisions. The school survives on extremely limited resources and feeds and cares for over 50 children on a daily basis.

A team of volunteers from Zurich visited the school in May of this year in order to determine what was most needed, after which it was decided that the school’s interior could be improved upon and various repairs could be done to the school roof, parts of which were on the verge of collapse.

bricks instead of fasteners held down portions of roof sheeting and there were several areas where incorrectly applied waterproofing had failed, causing rainwater to leak into one of the two classrooms, rotting the ceiling.

The renovation project began on Saturday, 1 June, with teams from Ceratech and Design Waterproofing doing the preparation of the roof, removing the unsound sheeting and purlins, cleaning the debris off the roof, treating rust, removing failed waterproofing and re-applying new waterproofing as required.

An appeal for help from one of the Zurich volunteers on her personal blog caught the attention of Ceratech Radiant Barrier Coatings and two of Ceratech’s approved applicators, namely Design Waterproofing Systems and Quality Fix Roofing.

Between them, Ceratech, Design Waterproofing and Quality Fix Roofing agreed to supply the roof sheets, fasteners, flashings, timber, guttering, waterproofing, labour and roof paint needed to repair and coat the roof. Zurich sourced and supplied the interior paint, shelves, window glazing and new ceiling boards with which to brighten up the inside of the building and to create a space in which the children could be properly accommodated and stimulated.

A portion of the roof overhanging a passageway between two portions of building was close to collapsing as it rested on poorly secured pieces of timber and in some areas, cement

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Before.

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CSR

Before.

After.

Once this was done, the roof sheets were washed down in preparation for coating and new clear polycarbonate sheets were installed over new purlins where the unsound IBR sheeting had been removed, in order to open up the space and let in natural light. This portion of roof was also extended in both length and width in order to offer shelter in rainy weather so that the children can continue to play outdoors even in wet weather. Guttering was installed along the eaves in order to channel rainwater that would previously fall onto the walkways below into existing drains on the property. The roof was then spray coated with Ceratech’s Radiant Barrier Coating in order to ensure that the classrooms would remain cool during the summer months, when young children are most at risk of overheating and becoming dehydrated.

Meanwhile, inside the building, old, failing wallpaper was scraped off and the walls were painted with blackboard paint along portions of the lower walls and a durable indoor paint was applied to the upper walls.

The water-damaged ceiling boards were removed and replaced with new boards and given a coat of paint. A shelving unit was equipped with individual baskets for each of the children to provide storage for their spare clothing, nappies and personal items. Broken windows were replaced and new window putty used to secure all the building’s windows.

Thank you sign.

In the true spirit of Ubuntu, Finyazwanda’s children were accommodated by a neighbouring daycare centre for the duration of the makeover, while the Zurich team worked on a special surprise for the children – an outdoor play area, seedlings for a small food garden and a colourful mural on an outside wall. A strip of cement in front of the school was covered with Astroturf, complemented by a jungle gym and swing set.

The project was completed on 6 June and a handover of the newly renovated school took place on Friday, 7 June, with a small party for the children, who were treated to cupcakes and party packs. Each child also received a scarf and beanie set and a backpack.

The Zurich Insurance Company of South Africa, Ceratech Group (Pty) Ltd, Design Waterproofing Systems and Quality Fix Roofing wish to thank SA Roofing magazine for their support of this initiative and look forward to participating in future projects of this nature.

Handover party.

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Pro d u ct l au n c h

Saint-Gobain Gyproc launches new generation DONN grid system A testament to innovation

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he DONN ceiling system has been reinvented by the innovative Gyproc team in South Africa, and was launched to industry stakeholders including contractors, architects, project managers and media at a series of events hosted in major cities across the country.

The new generation of DONN grids are fully compatible and interchangeable with previous versions, and now have a lightreflective steel capping and are coloured snow white. Their galvanized steel construction ensures rust resistance.

Being the most trusted and widely installed exposed grid system in the country, DONN is committed to manufacturing products to ISO standards, ensuring superior quality and consistency. Testimony to this is the product’s 60-minute fire rating for stability and integrity, the only system on the market with a fire rating above 30 minutes in accordance with SANS10177: Part 2.

The DONN grid system, which includes mineral fibre ceiling tiles from Celotex, part of the Saint-Gobain group, as well as signature Fire Notches integrated with the latest generation of main tee, has undergone stringent tests to no less than four independent safety fire performance standards at the Fire Lab situated at the Council for Scientific and Industrial Research (CSIR), where it was awarded an unrivalled 60-minute fire rating. “Fire resistance is an absolute necessity in modern construction, but the DONN system goes well beyond our expectations for a fire-rated ceiling grid,” comments Kobus Strydom from the Fire Lab at the CSIR.

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The DONN T38 FR grid system is easily assembled. The system’s original innovator, Don Brown, whose original invention was the self-locating DX clip that appeared on cross tees, is today being manufactured using steel alloy for accuracy and resilience. The patented quick release clips allow for easy installation with no accidental dropouts. The grids can also be disassembled and the cross tees reused.

The DONN T38 FR grid system carries Saint-Gobain’s SpecSure warranty, a 10 year system warranty that is designed to offer total confidence that the system will meet the most rigorous of building requirements.

For further information please visit www.gyproc.co.za

Evan Lockhart-Barker, GM Marketing of Saint-Gobain Gyproc, addresses guests at the Johannesburg launch of the new generation DONN grid ceiling system.

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pai nts & coati n gs

SA coatings sector’s global status is being eroded rapidly, SAPMA chairman warns The South African coatings industry’s global competitiveness is being eroded rapidly, Terry Ashmore, chairman of the SA Paint Manufacturing Association (SAPMA) has warned.

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elivering his chairman’s report at the SAPMA annual general meeting in Springs recently, Ashmore said the SA economy had from 2008 to 2010 weathered the global recession relatively well, but in the last two years the storm clouds had been building up – and most of these were self-inflicted.

“Labour and civilian unrest, increasing unemployment, resources supply problems, and, worst of all, our global competitiveness is being eroded rapidly and will soon become more of a concern than our local competitiveness. We are in danger of a shift in investor confidence moving from South Africa to other resource-rich sub-Saharan countries. But we have the opportunity to rise above the problems and make the coatings industry a beacon for other industries to follow,” he stated.

Ashmore said South Africa should fully utilise the services of some of the best entrepreneurs in the world, its large potential labour force, the extensive area of growth on its doorstep in Africa, and support local value-added industries. “We should also try to employ as many young people as possible, and fully use the training offered by the SA Paint Industry Training Institute at the new Centre of Excellent in Springs. Unemployed youth without a future is a recipe for disaster.”

Sanjeev Bhatt, vice chairman of SAPMA, told the AGM that some of the crucial issues facing the coatings sector were: • How to get the SA/global economy on to a path of stable growth and higher employment; • How to create new value in the face of generational and structural shifts that are reshaping business models; • How to leverage rapid and far-reaching advances in coatings technology; and • How to increase industry, national and global resilience to major systemic and catastrophic risks.

“It has been a bumpy ride for the coatings industry locally. The landscape here is changing at such fast pace that it is impossible for companies to handle the multitude of issues simultaneously.

We need to move on by answering the most pertinent challenges facing our industry at the moment,” Bhatt added.

Deryck Spence, executive director of SAPMA, announced major changes to the association’s distribution of industry statistics in future. Statistics collected would in future be available only to companies that contribute their own statistics and would also not be posted on the website.

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SAPMA - AGM 2013, Terry Ashmore.

He said the reduction of the lead content in paint was one of the major challenges facing the industry in the year ahead.

“The Department of Health now means business when it comes to the prosecution of manufacturers and retailers who transgress and do not conform to the proposed reduction of lead content to 200ppm,” Spence added.

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csr

ArcelorMittal South Africa makes provision for housing in Bophelong Although South Africa is nineteen years into democracy, many historically disadvantaged communities continue to face problems associated with inadequate housing coupled with the lack of basic infrastructure, such as sanitation and running water.

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he ArcelorMittal South Africa Foundation has partnered with the Emfuleni Local Municipality to build two 40m² houses using the company’s Alternative Building Technology system. The two houses are located in Bonane, in Bophelong Township and were handed over to their beneficiaries on the 18th of July 2013. The beneficiaries were selected from the Department of Human Settlements’ database. The houses are equipped with an open-plan kitchen, lounge and a bathroom with running water and flushed toilets and two bedrooms.

“We are pleased to have played a role in bettering the lives of the two families that received the houses on the 18th of July.

Many South Africans live in corrugated shacks that are not suitable for human habitation and our ultimate aim as a responsible corporate citizen is to make a meaningful difference by providing solutions to help alleviate the problem,” says Maggie Mopedi, Manager of Corporate Social Responsibility and External Relations at ArcelorMittal South Africa.

The Alternative Building Technology system is a low cost high quality housing alternative. The system requires an installation period of just four days, making it relatively easy for a larger number of houses to be built in a shorter period of time, as compared to the conventional masonry construction methods.

The material is extremely resistant to the detrimental effects of adverse climatic conditions and can withstand earthquakes, strong winds and harsh UV rays.

“Apart from providing a housing solution, our goal is to ensure that the building system used for the project is robust, strong, durable and thermally insulated and to provide quality living conditions for the beneficiaries.

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The home building initiative also contributes towards the economic prosperity of the Bopheleng community by providing opportunities for local contractors to be trained on the building system and gain employment from the project,” explains Mopedi.

Further to the above, two similar houses were constructed and handed over to beneficiaries in Newcastle in 2012. Over the long term, ArcelorMittal South Africa is implementing plans to build 10 more Protea houses in Newcastle and 8 more similar houses across Gauteng.

“This project is also in alignment with our other corporate social programmes in the Vaal region where we strive to better the lives of those less fortunate by providing a holistic assistance from housing solutions to educational programmes through our science centre in Sebokeng,” concludes Mopedi.

The two houses were handed over to the Executive Mayor of Emfuleni, Councillor Greta Hlongwane, who then donated them to the proud new owners.

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ArcelorMittal South Africa

Light Steel Frame (LSF) for building Light Steel Frame building is part of a fast growing innovative building solution that offers a modern and fresh approach to creating space for living and working with the benefit of contributing towards a sustainable environment. The features of light steel frame buildings include structural integrity, speed of construction, thermal insulation, dimensional accuracy and high quality finishes.

Steel lends itself to a category of construction materials that is recyclable. A light steel frame building consists of steel sections, selected for their structural and mechanical properties in accordance with the national standard for light steel frame building, SANS 517. In addition, these sections are galvanised for corrosion protection, ensuring the longevity of the structure. ArcelorMittal South Africa has recently expanded the traditional thickness range available for LSF building. The new thicknesses available include 1.0mm and 1.2 mm developed in the structural grade EN10346 S550GD, Z275 galvanised.

Chromadek® for roofing Steel is generally known as a material offering rigidity and strength. However Chromadek®, made of galvanised steel substrate by ArcelorMittal South Africa, is a unique metal roofing solution. Being readily formable makes it most suitable for a wide range of enduses in the building industry. The formability of the substrate is matched by the flexibility of the paint system providing two important characteristics desired by architects, profilers and developers.

Chromadek®, provides the benefit of being both lightweight and strong since it is one of the lighter roofing materials that is up to 80% lighter than conventional non-metal roofing materials. Here benefits can be seen in construction time and cost. Chromadek® offers great versatility in roofing, cladding and rain water goods applications. South African architects use Chromadek® in a variety of roofing and cladding projects ranging from churches, shopping malls, factories, warehouses and airports to luxury eye-catching homes and large housing estates.

Over and above its aesthetic attributes, Chromadek®’s paint coatings are designed to provide additional protection from the natural weather elements further enhancing the performance of the base galvanised steel metal roof sheet. Furthermore, the paint coatings exhibit excellent formability and elasticity allowing roll profiling and bending operations without damage to the paint coating.

Heat reflective Chromadek®

An exciting and innovative advance in Chromadek® has been the development of a heat reflective paint system in four colours of the Chromadek® range. The four colours, Charcoal Grey, Dark Dolphin, Aloe Green and Buffalo Brown utilise an advanced thermal technology paint system that incorporates a heat reflective pigment providing improved durability and a cooling effect of up to 8°C, contributing toward regulating indoor building temperature. Heat reflective Chromadek® offers the following unique benefits: • Increased durability • Increased gloss retention • Improved colour stability (less fading) • Sustainable paint film integrity • Reduced heat transfer into buildings If you require more information contact Melvin Hickers tel 016 889 4105 or e-mail at melvin.hickers@arcelormittal.com

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