WWW.TRADEMAX.CO.ZA
NOVEMBER - DECEMBER 2014 ISSUE: 65
SA R36 EACH INCL. / R360 PER ANNUM INCL.
NOVEMBER - DECEMBER 2014
ISSUE: 65
EDITOR’S COMMENTS...................................................................................................... 4 PROJECT NEWS........................................................................................................... 10-15 INSULATION................................................................................................................. 18-20
Trademax Publications SA Roofing
STEEL................................................................................................................................ 22-23
Tel: 0861 SA ROOF
COMPANY PROFILE......................................................................................................... 24
Cell: 082 266 6976
Tel: 0861 727 663
SAISC STEEL AWARDS 2014....................................................................................26-47
Fax: 0866 991 346
INSULATION.......................................................................................................................48
www.trademax.co.za
ADVERTORIAL.............................................................................................................50-54
Postnet Suite 241
ADVERTORIAL.............................................................................................................56-57
Private Bag X103
ADVERTORIAL.............................................................................................................58-62
N1 City 7463
INSULATION................................................................................................................ 64-65 INDUSTRY INSIGHT..................................................................................................66-67 ADVERTORIAL................................................................................................................... 68 EVENTS................................................................................................................................. 69 WATERPROOFING..................................................................................................... 70-71 EVENTS.................................................................................................................................72
PUBLISHER: Billy Perrin billy@trademax.co.za 0861 727 663 EDITOR: Jennifer Rees editor@trademax.co.za 0861 727 663 ADVERTISING: Jacqui Marsh jacqui@trademax.co.za 0861 727 663 LAYOUT & DESIGN: Craig Patterson craig@trademax.co.za SUBSCRIPTIONS: Belinda Thwesha belinda@trademax.co.za 021 595 3422
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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 editorial content or advertisements, in this issue.
EDITOR’S COMMENTS
Steel under the spotlight The latter part of every year at SA Roofing comes with a distinct air of excitement in anticipation of SAISC’s annual Steel Awards. Like every year before it, 2014’s awards did not disappoint, and we are proud to close off another great year with an issue that showcases these amazing award-winning projects.
T
o quote Spencer Erling, convenor of the 2014 Steel Awards, “The quality of the entries improves each year and 2014 was no different.” Projects ranged from corporate projects to those of a more commercial nature, and included an aquatic centre, a community centre with a dance hall and a massive lead and zinc storage warehouse, with the Malapa Fossil Excavation Site taking top honours at the awards, as well as winning the Association of Steel Tube & Pipe Manufacturers of South Africa’s Tubular category. Feast your eyes from page 26. We wish you a strong end to 2014 and a safe, happy festive period with family and loved ones.
KEEPING YOU POSTED: Due to the current SA Post Office strike, affecting some regions especially hard, Trademax Publications has secured the services of a reputable company that specialises in door to door deliveries of magazines and newspapers. We are presently well advanced in our effort to convert all relevant records on our database to include street addresses to ensure the uninterrupted delivery of your favourite trade magazines on time – both now, and in the future. If you are a hard copy reader of SA Roofing, we kindly ask that you email celeste@trademax.co.za with your name, surname, company name, and street address, including postal code.
The SA Roofing Team
Contributor PAUL KONING Paul Koning has been involved in the building industry for over 41 years and founded G.P Koning (Pty) Ltd. Just over ten years ago he sold all his interests in the company and established his consulting business, GPK Construction Consultants, which has expanded, with two colleagues and friends joining him, to form KVB Associates. Koning was a founder member of The Waterproofing Association Cape and was Chairman for many years. He was also one of the founders and president of the Waterproofing Federation of Southern Africa.
Image credit: With reference to the article entitled ‘First ‘green’ transport facility in South Africa unveiled’ on page 6 of the October issue of SA Roofing, we omitted to credit the photographer,
Grant Duncan-Smith. For more information about his work or to contact him, please visit www.subiacophotography.co.za.
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What to expect 350 conference delegates 30+ visionary speakers 3 days of content 2000 attendees 120+ exhibitors 20+ hours of networking opportunities 10+ African countries participating
Special offer for SA Roofing readers! Register online before 30 November 2014 and get 10% off your conference pass. Quote SAR002
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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. DUE FOR PUBLICATION FIRST QUARTER OF 2015 TO BOOK YOUR SPACE CONTACT: (t) 0861 SA ROOF (727 663) (e) info@trademax.co.za (w) www.trademax.co.za
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PROJ EC T N E W S
Innovative steel usage in warehouse A recently completed warehouse and office in Philippi, Cape Town, is clad with multi-coloured pre-painted steel panels and has a high solar reflective index roof to minimise inbound infrared radiation. Popular roofing material, Clean COLORBOND™ steel with Thermatech™ solar reflectance technology coating, was recently used in the construction of this high tech new warehouse for client, Holdsport Ltd. By Gareth Griffiths, B.Sc (Materials sciences)
PROJ EC T N E W S Holdsport Warehouse that uses High SRI pre-painted roofing material from BlueScope Steel.
PROJ EC T N E W S A recently completed warehouse and office in Philippi, Cape Town, is clad with multi-coloured pre-painted steel panels and has a high solar reflective index (SRI) roof to minimize inbound infrared radiation. Popular roofing material, Clean COLORBOND™ steel with Thermatech™ solar reflectance technology coating, was recently used in the construction of this high tech new warehouse for client, Holdsport Ltd.
T
he 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. Cape-based architects for the building, Bam Architecture, advised that design approval meant SANS 10400 part XA compliance for the office portion of the building. Accordingly, the energy efficient building utilizes high performance glazing and cavity insulation in certain walls, as well as under the concrete roof slab. 75mm Factorylite insulation was used under the roof. To support optimal thermal performance, the building is clad and roofed using premium brand pre-painted aluminium-zinc material, Clean COLORBOND™ steel to specification AZ150. The sparkling white roof was built using Global Roofing's Kliplok 406 profile made from Clean COLORBOND™ steel in colour African White (TCT 0.53mm) with SRI value of 85. The walls sport an IBR686 wall cladding of the same steel (TCT 0.47 mm) in colours African White, Armour Grey and Shale Grey. Roofing and cladding was by Chartwell Roofing. According to Bam Architects, the choice of three colours was an aesthetic one, but the raised curved profiles in the sidewalls are walled with translucent sheeting in the return sections, which allow a degree of natural light to enter the warehouse. BlueScope's General Manager, Wayne Miller, explains that Clean COLORBOND™ steel with Thermatech™ technology was recommended due to its extraordinary performance, especially in hot climates and along the coastal zone.
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ADVICE FOR IMPROVING ENERGY EFFICIENCY Energy efficiency inside a building envelope may be attained in various ways, including: • Using light coloured roofing materials to reduce solar heat gain. • The use of low thermal mass materials that respond to temperature changes comparatively quickly in contrast with high thermal mass materials that take longer to heat or cool. • Insulating the 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.
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PROJ EC T N E W S The sparkling white roof was built using Global Roofing's Kliplok 406 profile made from Clean COLORBOND™ steel in colour African White (TCT 0.53mm) with SRI value of 85. The walls sport an IBR686 wall cladding of the same steel (TCT 0.47 mm) in colours African White, Armour Grey and Shale Grey. Roofing and cladding was by Chartwell Roofing. According to designers, Bam Architects, the choice of three colours was an aesthetic one, but the raised curved profiles in the sidewalls are walled with translucent sheeting in the return sections, which allow a degree of natural light to enter the warehouse. 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. 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. Since the addition of Thermatech™ solar reflectance technology, even darker coloured Clean COLORBOND™ steel products now absorb less energy, creating the advantages of a cooler roof and a cooler building, similar to lighter shaded colours. According to Wayne Miller, the solar reflectance technology lowers the surface temperature by absorbing less heat from the sun. “Thermatech™ optimises the thermal performance of every colour in the standard Clean COLORBOND™ steel and Clean COLORBOND™ Ultra steel palettes, without changing their appearance. This provides greater thermal comfort all year round whilst using less energy for air-conditioning and hence mitigating the UHI effect,” he says. “In addition, our product's outstanding dirt resistance property ensures the roof looks newer for longer. This also assists in cooling.” In a comparison between a Clean COLORBONDTM and a conventional steel roof, both uninsulated, the positive effect of dirt resistance technology is illustrated. Tests show that after two years’ exposure, assuming an irradiance of 1 000W/m², exterior temperature of 36°C and a high thermal emittance value of 0.85, typical of pre-painted steels, the Clean COLORBONDTM steel roof’s temperature is almost 10° cooler than the conventional steel roof and it radiates more than 40W/m² less heat down into the building.
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PROJ EC T N E W S
CLEAN COLORBOND TM STEEL’S DIRT RESISTANCE ALSO ASSISTS IN COOLING UNINSULATED CLEAN COLORBONDTM STEEL ROOF
ROOFING MATERIAL Roof Sheet Temperature °C
Radiant Heat Downwards - W/m2
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
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/Garden Route Green*
0.27
0.86
27
Cape Charcoal/African Charcoal*
0.23
0.84
19
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. Solar Properties of Roofing Materials.
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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
Tabled left is the comparison of roofing sheet temperature: Roof Sheet Surface Temperature (°C): Thermatech™ vs. Non-Thermatech™ Calculated according to the ASTM E1980. Assume 1 000W/sq.m.
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PROJ EC T N E W S
EMERGENCY LIFE SAFETY SYSTEM WATER SUPPLY Made from ZINCALUME® steel, a pair of circular tanks in the yard of capacity 414 000 kl each supply high pressure water for the automatic sprinkler system used for fire fighting inside the warehouse. Specified by Aurecon as an integral part of the building's life safety and fire fighting systems, the tanks are model ST12/08 built by SBS Water Systems in Durban. As far as light-weighted durability, ZINCALUME® steel tanks are in a class of their own. According to Brian Wilson, Sales and Marketing Manager for the supplier, “SBS™ has been installing tanks made from ZINCALUME® in South Africa and beyond since 1998 and chooses to use only ZINCALUME® steel as the material used in the manufacture of the outer shell and roof cover of our SBS Tanks™ range because of its proven track record as a superior product with excellent strength and corrosion resistant properties and the consistent quality of the material we receive.” “A metal coated product's life is ultimately decided by the environment it is exposed to, the amount of coating metal applied to the base steel, and the evenness of its application.
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Our ZINCALUME steel has a guaranteed minimum coating mass of AZ150g/m² and that is your guarantee of long life performance,” said Wayne Miller.
FOR MORE INFORMATION, CONTACT: BlueScope Steel (t) 021 442 5420 (e) wayne.miller@bluescopesteel.com (w) www.bluescopesteel.co.za SBS Tanks™ (t) 031 716 1820 (e) brian@sbstanks.co.za (w) www.sbstanks.co.za
Note: Holdsport Ltd. opened its new warehouse facility in Philippi during the last financial year. CEO, Kevin Hodgson said this modern facility was 11 000m² in size and enabled the company to expand the distribution of locally sourced products in addition to the distribution of directly sourced products. (Source: CBN, 18 Sep 2014)
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“The new passion - create something with wood“ Please diarise our upcoming event. The Wood Conference celebrates its 5th anniversary on the 17 February 2015 at the Cape Town International Convention Centre (CTICC). The FIFTH WOOD-CONFERENCE will focus on creative, multi-functional and the sustainable use of wood. An amazing programme bursting with information, workshops, emotions, visions and knowledge has been put together for this upcoming event. The Wood Conference’s spiritual father, George Kuratle, looks forward to your participation at this “Fifth Year Anniversary”.
Get inspired - join the FIFTH WOOD-CONFERENCE Location: Date: Registration:
Cape Town, East Ballroom, CTICC Convention Center February 17, 2015 www.woodconference.co.za
For more information and applications, please contact:
www.woodconference.co.za
Zaida Davids +27 (0) 76 401 91 20 z.davids@hwzinternational.com RSVP by 24 January 2015
I N S U L ATI O N
The invisible energy saver Regardless of the aesthetic value of a building, it is the insulation performance that makes or sometimes breaks the house or business. This article briefly describes the most important things to know about insulation.
T
he Energy Efficiency Regulations XA1, XA2 and XA3 published in November 2011 rendered the installation of thermal insulation in certain building occupancy classes in all new buildings and extensions compulsory. Thermal insulation, properly installed, is one of the easiest and most obvious ways to make a home or building more energyefficient. Used correctly, insulation can help reduce the amount of energy required to maintain a comfortable living/working environment, keeping the heat in throughout winter, and out during summer. The level of insulation required will depend on the climate zone, building construction type, and whether auxiliary heating and/or cooling is used. Up R-values describe the resistance to heat flow upwards (sometimes known as winter R-values or heating). Down R-values describe resistance to heat flow downwards (sometimes known as summer R-values or cooling).
TYPES OF INSULATION 1. Bulk insulation mainly resists or slows down the transfer of heat by conduction and convection, relying on pockets of trapped air or low conductive gases within its structure. Its thermal resistance is essentially the same regardless of the direction of heat flow through it. For bulk insulation, R-values are provided for a specific thickness and density of material at a given temperature. Bulk insulation includes materials such as glass fibre, slag wool, rock fibre, cellulose fibre, polyester fibre, expanded polystyrene, extruded polystyrene, polyurethane and polyisocyanurate. Each product has a material R-value for a given thickness, density and temperature.
2. Reflective foil insulation (radiant barrier) works on a different principle than bulk insulation and mainly resists radiant heat flow due to its reflectivity, low radiant heat absorption, and low emissivity (ability to re-radiate heat). Reflective insulation is usually shiny aluminium foil laminated with reinforcements or low density polyethylene According to SANS 10400-XA Energy Usage in Buildings, the bubbles encapsulated with air and laminated to foil and minimum thermal resistance (R-value) requirements for floor, supplied in rolls. A layer of reflective foil insulation is an wall and roof assemblies are as follows: effective barrier to radiant heat and as a vapour barrier. Reflective insulation gives excellent insulation performance for SUMMARY OF INSULATION REQUIREMENTS IN downward heat flow (summer heat ACCCORDANCE WITH SANS 10400-XA gain), but only moderate performance for upward or Total Roof Non-Masonry Floor Insulation Pipe Insulation Pipe Insulation horizontal heat flow (slowing heat Assembly Walls (Under slab ≤ 80mm > 80mm losses in winter) and requires an air Climate R-value Total System heating) R-value R-value Zone space between the foil and solid (m².K/W) R-value R-value (m².K/W) (m².K/W) surfaces to achieve full insulation (m².K/W) (m².K/W) qualities. Reflective foil insulation 1 3.7 2.2 1 1 1.5 products should be installed in conjunction with conventional bulk 2 3.2 1.9 1 1 1.5 insulation to achieve optimum 3 2.7 1.9 1 1 1.5 energy savings. 4 3.7 1.9 1 1 1.5
5
2.7
1.9
-
1
6
3.5
2.2
1
1
WHAT IS AN R-VALUE? The effectiveness of thermal insulation material is rated in terms of thermal resistance, called R-value, which indicates how well the insulation resists heat flow (heat transfer) – or how effective it is in limiting heat transfer into and out of a building. Generally, the higher the R-value, the more effective the insulation is. The R-value of thermal insulation depends on the type of material, its thickness, and its density. Total R-values describe the total resistance to heat flow provided by a roof and ceiling assembly, a wall or a floor. These values are calculated from the resistance of each component, including the insulation.
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3. Composite bulk insulation and reflective materials that combine 1.5 some features of both types are available. Examples include foil bonded to bulk insulation, whether flexible blankets or rigid batts/boards, i.e. foil faced blankets, foil faced batts and foil faced boards.
1.5
POTENTIAL HAZARDS WITHIN CEILINGS Homeowners are often unaware of the potential hazards present within the ceilings of their houses until they install thermal insulation. Nearly all of these problems appear to originate from poor, sub-standard and pre-existing electrical work.
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Insulation The invisible energy saver
By adding just 1% to your total building cost, you can install state of the art insulation. The result: • comfortable surroundings • saving money on energy costs • supporting a sustainable environment CORPORATE MEMBERS
Administered by
Contact our members for products and services that meet the requirements of quality, performance and safety as set by the Thermal Insulation Association of Southern Africa (TIASA). For a comprehensive list of Insulation Contractors, Distributors, Manufacturers, Suppliers & Specialists please visit: www.tiasa.org.za
I N S U L ATI O N
Care should be taken when installing insulation to ensure that it does not interfere with the safety or performance of domestic services and fittings, such as heating flues, recessed light fittings, gas appliances and general plumbing and electrical components. This includes providing appropriate clearance as detailed in relevant legislation and referenced standards such as for electrical, gas and fuel oil installations.
Some appliances and fittings, such as recessed down lights and heater flues, require free space around them for the dissipation of heat to reduce fire hazards. Insulation should not be placed against these fixtures. Regulations and manufacturers’ recommendations should always be checked before installing insulation.
Several defects and damages discovered above the ceilings. Images courtesy of Aeropink.
If there are down-lighters, ensure that down-lighter covers are installed to minimise any risk of the down-lighters coming into contact with the insulation. Images courtesy of Eco-Insulation.
THERE ARE A FEW FACTORS TO CONSIDER WHEN SELECTING THERMAL INSULATION: 1. Is it in compliance with the relevant South African National Standards applicable to the relevant product? 2. Does it conform to the South African National Building Regulations? 3. Is it appropriate for the intended building occupancy or building classification and fire safety requirements given in SANS 10400-T Fire Protection and SANS 428 Fire Performance Classification of Thermal Insulated Building Envelope Systems? 4. Does the product comply with the recommended R-value for the relevant climatic zones in accordance with SANS 10400-XA Energy Usage and SANS 204 Energy Efficiency in Buildings? 5. Only use reputable insulation installers, preferably TIASA contractors.
When insulation is non-compliant and not installed and left on the ceiling it would obviously not work. Only use accredited TIASA contractors for the installation of thermal insulation.
Research in 2007 from Australia concluded that the annual percentage savings resulting from the introduction of a good level of ceiling insulation, which is a low-cost, additive, nonreplacement option (in a previously uninsulated building), which varies according to heating/cooling usage, climate and building design, was predicted to be 22 PJ for residential and 18 PJ for commercial buildings. The combined total (40 PJ) represents 40% of a power station. TIASA is committed to using the combined strength of its members to do all it can to protect, improve and promote what correctly applied thermal insulation, the invisible energy saver, can do to help reduce energy usage and its associated costs, as well as reduce CO2 emissions.
FOR FURTHER INFORMATION CONTACT: (t) 011 805 5002 (w) www.tiasa.org.za
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FINISHING TOUCH The highest quality roof tiles at a cost effective price that enhances any building construction, only from the Technicrete Double Roman and Tuscan Roof Tiles Accessories:
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Thursoct has been involved in the manufacture of PVC products over the past 25 years. The organization has grown to be a major contender in the manufacture and supply of PVC electrical, plumbing and construction products throughout South Africa. Thursoct has grown from strength to strength and will be one of the first organizations in South Africa to manufacture PVC Roof Sheeting and PVC Foam Board locally. Thursoct is a family-grown business and believes in providing the right product at the best price without compromising on quality or integrity.
Our uPVC Roof sheets have an added low gloss coating that greatly enhances the UV absorption of the sheet and increases the scratch and impact resistance, it is ideal for our harsh South African climate, it will not rust or corrode, it is modern and fast becoming the material of choice for manufacturing plants, agricultural buildings and warehouses, as well as decks, patios, car ports, etc. Life cycle cost analyses have proven that PVC roofing systems are among the least costly over time for two major reasons: long service life and energy efficiency. The longer a roof lasts without major problems, the less costly it is on an annual basis. Up to 40% can be saved on energy consumption every year, due to the reflective properties of white PVC roofs. The anti-corrosion performance of PVC roof tiles is suitable for most applications in coastal areas with severe salt fog corrosion, as well as areas with severe air pollution.
PVC ROOFING SHEETS TEL (016) 986 1180 | thursoct@interkom.co.za
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S TE E L
The new landscape for roofing in South Africa The steel and roofing markets have faced a complex range of challenges in 2014, including the effect of the global economic downturn, industrial action and ever-increasing operating costs, all of which added immense pressure to an already-sluggish market.
T
he steel industry is going through some notable changes, some of which are here to stay. Chinese and Indian steel companies that were formerly considering South Africa as an investment possibility have now made significant investment, impacting on the previous monopoly enjoyed by local mills. Foreign investment is positive news, but the knockon effects, which to a certain extent can be predicted, will certainly change our landscape forever. That said, we remain optimistic for all companies in the market. The expectation of the Consumer Protection Act and its regulatory bodies is to ensure compliance, maintenance and the improvement of standards in the South African economy. Furthermore, the abundance of iron ore in both magnetite and hematite forms and our geographical location make South Africa the ideal vantage point from which to penetrate booming SADC markets.
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S TE E L
CRITICAL TO NOTE: With competition and uncontrolled markets comes the erosion of margins as many players’ response to competition in an attempt gain market share is to drop their prices, resulting in a vicious cycle of cost cutting. This inevitably, is to no one’s benefit, not even to the end user. With smaller margins, there is a knock-on effect of less staff, poor quality service and a drive for volume business, which is becoming scarce. The NDP and other major infrastructure development plans are still some way off, fraught with politics, indecision and a lack of drivers to implement them. It is going to take significant effort and integrity by all parties involved, private and government sectors will need to establish an integrated plan with the inclusion of all contributing parties, the criteria should be based on competency, positioning and past performance to enable certain pillars of the plan, allowing delivery in service of infrastructure development and sustainable industry.
FOR MORE INFORMATION, CONTACT: Lawrence Kelly Roofing Sales Manager (t) 011 861 7636 (e) lawrence.kelly@BSisteel.com (w) www.bsisteel.com
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CO M PA N Y PRO F I L E
JCP Roofing JCP Steel Supplies, a family-owned business, has been supplying prepainted flat steel products for over 22 years, with a solid reputation for excellent service, uncompromising quality and impressive lead times. Ready to broaden its horizons, JCP Steel Supplies has branched out to serve the roofing trade through its JCP Roofing company.
W
ith vast experience in the flat steel industry, we at JCP Roofing are committed to growing into a leading roof sheeting supplier, offering the same level of excellent service, uncompromised quality and impressive lead times to the roofing industry as we have been doing in the flat sheet industry. JCP Roofing sources material from various quality mills around the globe, including the local mill, ArcelorMittal, by stocking locally produced Chromadek®. Our machinery has been set up to roll form IBR and corrugated sheeting, with the facilities for bullnosing/cranking and more. It is with pride and passion that we commit to offering nothing less than excellent customer service.
PRODUCTS Key to our success at JCP Roofing is not only our unmatched service, but also the quality material we use when roll forming our IBR and corrugated sheeting. Our Chromadek® colour range material, produced by ArcelorMittal, will be available in 0.5mm and 0.58mm thicknesses, and with Z275 or Z200 Zinc coating respectively. Chromadek® is painted on a world class paint line based on an international standard by ArcelorMittal. We also import pre-painted Galvalume from other mills around the world, ensuring our stock levels are always sufficient to meet the high demands in the market. This material is produced with an Aluminium-Zinc coating, making it a world class product at a very competitive price. It will be available in 0.5mm and 0.58mm AZ150 coating. We stock a wide range of colours to choose from. At JCP Roofing, we will also have Galvanized and Galvalume sheeting available in various thicknesses, from 0.4mm, to 0.5mm and 0.58mm. This material is a great alternative to Chromadek® or pre-painted Galvalume at a fraction of the price. The latest addition to our product range is the service we offer for bullnosing/cranking on the IBR sheeting, according to your specific needs. JCP Roofing also supplies screws and fasteners to the roofing market.
FOR MORE INFORMATION, CONTACT: (t) 011 814 1898 (e) ruan@jcproofing.co.za (w) www.jcproofing.co.za
SERVICES JCP Roofing has without doubt inherited the ability to service the industry with unprecedented lead times from its big brother, JCP Steel Supplies. There is never an order too small, or too big for us to handle promptly and with the utmost dedication. At JCP Roofing, our customers’ interests and satisfaction are our number one priority.
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JCP ROOFING is a new business that came into existence through JCP STEEL, a company that has been serving the steel industry with flat steel products for over 22 years, with a reputation for excellent service, uncompromising quality and impressive lead times. We have expanded our portfolio to supply IBR and corrugated roofing sheets to the same level of quality and service to which our customers are accustomed to.
PRODUCTS: IBR Corrugated Polycarbonate Sheeting Bullnosing/Cranking Flat Sheets Screws & Fasteners
CONTACT: Tel: +27 11 814 1898 | Fax: +27 11 814 2166 | Email: ruan@jcproofing.co.za | Web: www.jcproofing.co.za
S A I SC S TE E L AWA R DS 2 014
Malapa Fossil Excavation Site takes top honours at Steel Awards 2014 26
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Steel Awards 2014 convenor, Spencer Erling, says that each year the ability of South African architects and engineers to build aesthetic steel structures becomes increasingly apparent. “The quality of the entries improves each year and 2014 was no different. I congratulate the winners and all those who entered,� says Erling. N OV - D E C 2 0 1 4
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teel Awards 2014, which took place in Johannesburg, Cape Town and Durban on the 18th September 2014, were hosted by the Southern African Institute of Steel Construction (SAISC) and the sponsors were Aveng Steel (Main Sponsor), Macsteel Service Centres SA (Table Décor Sponsor), Cadex Systems SA (Photo Competition), Association of Steel Tube and Pipe Manufacturers of South Africa (Tubular Category Sponsor), B&T Steel (Factory and Warehouse Sponsor), and Genrec Engineering, NJR Steel Holdings, Peddinghaus, Tubular Holdings and Retecon/Ficep (Partner Sponsors). Such was the quality of the steel structure at the Malapa Fossil Excavation Site, which was the overall winner and winner of the Association of Steel Tube and Pipe Manufacturers of South Africa’s Tubular category, that Erling was prompted to say, “It is surely the first time since I have been managing the Steel Awards process (this year is number 13) that the overall winner has ticked so many boxes as to why the project represents excellence in the use of steel!”
The structure had to, in addition, have a tourist viewing platform, a crawl hoisting structure to lift out rocks of mass up to 1 ton and impart maximum natural light into the covered area. The access walkway to the viewing platform had to be like a blanket over a baby and not hinder the movement of the natural wildlife – so no handrails or the like. The final shape when viewed from above is like a beetle with eight legs. How does one design a structure when one does not know where the foundations will be? Enter Peter Fellows, the engineer. It was decided that during construction, once positions were chosen, rods would be drilled into rocks around the site onto which would be welded base plates. That of course requires that the eight columns be adjustable to suit the positions once identified.
In 2008, Professor Lee Berger of the University of Witwatersrand (Wits) was using Google Earth to look for possible fossil deposits in the Cradle of Humankind. What caught his eye was a near-circular ring of trees, something that would indicate a possible cave entrance or potential fossil deposit. The rest is paleontological history. The brief was to build a removable structure over the dig site to protect the site and the exposed fossils from the extremes of the weather and to allow for as much ‘dig time’ as possible. It also had to blend in with the ring of trees and the rest of the bush on the hillside.
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The roof was to be ‘rondavel-like’ in shape, but not necessarily round, from which would hang the viewing platform and hoisting structure. The detailing and fabrication of an extraordinary tubular structure like this take a special team. Enter the Spiral Engineering team, surely one of the few teams with the skill and dedication to build such a complicated structure. Taking into account the site location, the 7.5km farm track road, which runs partly through a river bed and that this is 4x4 country, how was this erected? Special trucks with limited capacity were used on the farm, and after four unsuccessful tries, finally a 30 ton all-terrain crane made it to site and had a long enough radius and capacity to reach without damaging the trees and the bush. The judges concluded that the determination of the whole team, the quality of their work, the fact that when one visits the site the roof is not visible from just a few metres away, that
the construction team has left the site virtually as they found it, except for the structure, there is no doubt that the project represents excellence in the use of steel for every possible reason.
DEVELOPER/OWNER: The University of the Witwatersrand School of Geosciences ARCHITECT: Krynauw Nel Associates STRUCTURAL ENGINEER: Peter Fellows Consulting QUANTITY SURVEYOR: Crane QS PROJECT MANAGER: Craig Harrison PM MAIN CONTRACTOR: Omni Struct Nkosi STEELWORK CONTRACTOR/S: Spiral Engineering DETAILERS/DETAILING COMPANY: KRU Detailing CLADDING: Cupric Tectonics PAINTER: Mzekizeki Painters
INSURANCE APPROVED
WATERPROOF ROOF SPECIALIST
ROOF
MAINTENANCE Roofing - Waterproofing - Maintenance - New & Repair Shane Simmonds Slate Tile - New & Repair Cell: 082 444 8787 Contracting roofspecialist@telkomsa.net Waterproofing - Underlay P.O. Box 293, Kelvin, 2054 - Slate & Tiles - Sheeting - Concrete www.roofspecialist.co.za
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S A I SC S TE E L AWA R DS 2 014 AISJ AQUATICS CENTRE: TUBULAR CATEGORY COMMENDATION The AISJ Aquatics Centre won a commendation in the Tubular category and Franco Mordini, representing the Association of Steel Tube and Pipe Manufacturers of South Africa on the judging panel, said that the structure is striking in a number of aspects. “The interaction between the curved tubular and straight members, the blend of colours and the various textures of the products used are simply delightful. Not only is the structure beautiful it is also structurally functional,� he said. The aquatics centre is a purposely designed, all-weather facility built for the AISJ, which caters for prekindergarten through grade 12. It is a co-educational school and is located on a 58-hectare tract on the northern edge of Johannesburg in rolling hills and horse country.
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DEVELOPER/OWNER: American International School of Johannesburg (AISJ) PRINCIPLE CONCEPT ARCHITECT: Flansburgh Architects, Boston, Massachusetts PROJECT ARCHITECTS (SOUTH AFRICA): Grosskopff Lombart Huyberechts and Associates in association with Terra Ether Architects STRUCTURAL ENGINEER: WSP Group Africa QUANTITY SURVEYOR: Taljaard Meyer & Storm PROJECT MANAGER: JM Henrey & Associates MAIN CONTRACTOR: Baccai STEELWORK CONTRACTOR/S: Omni Struct Nkosi DETAILERS/DETAILING COMPANY: Omni Struct Nkosi CLADDING CONTRACTOR: Omni Struct Nkosi
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S A I SC S TE E L AWA R DS 2 014 NO. 1 SILO: ARCHITECTURAL CATEGORY WINNER No. 1 Silo, part of the first phase in the Silo precinct development of The V&A Waterfront, won the Architectural category. This 10-storey development consists of an east and a west wing built on two levels of a mega-basement covering the whole site. Structural steelwork was the solution to provide slender support to the faรงades, walkways, bridges, lifts and feature stairs, while economically extending the cantilevers of the conventional post-tensioned slabs framing the atrium. The roof of the atrium is positioned above the open volume area spanning 17 metres. A composite steel and concrete Bondek slab was designed to serve as the primary support and waterproofing line to an accessible and functional roof. Another critical design element of the atrium was the feature staircase that serves the five office levels. Heritage requirements regarding the treatment, restoration and reinstatement of the existing structures were of the utmost importance. Underpinning the heritage silo and buildings constructed in the 1920s was a great challenge to the structural engineers and contractor.
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ZAP FASTENING SYSTEMS OFFERS YOU: The widest range Guaranteed quality and performance Best value for money Nationwide distribution
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Made to SANS1273 Class 4 specifications. For use in severe marine and industrial environments. Compatible with painted Zinc and painted Zinc Aluminium coated sheeting
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S A I SC S TE E L AWA R DS 2 014
No.1 Silo has been awarded a 6-star rating by the Green Building Council of South Africa. The development is the country’s latest – and largest – green office building. It is only the second office building to be awarded this rating in South Africa and the first in the Western Cape. Hugh Fraser, representing the South African Institute of Architects on the panel of judges said, “No. 1 Silo, like all buildings, will be measured by the passage of time, but steel ensures this should be an enduring contribution to the local architectural community,” he concluded.
DEVELOPER/OWNER: V&A Waterfront ARCHITECT: Rick Brown & Associates; VDMMA STRUCTURAL ENGINEER: GR Sutherland Associates QUANTITY SURVEYOR: MLC Quantity Surveyors PROJECT MANAGER: Mace Management Services MAIN CONTRACTOR: WBHO STEELWORK CONTRACTOR/S: Anchor Steel Projects DETAILERS/DETAILING COMPANY: Anchor Steel Projects CLADDING: World of Windows FAÇADE ENGINEER: Arup
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ALL THE RIGHT MOVES WHEN CHOOSING INSULATION 21
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THE RIGHT CHOICE FOR INTELLIGENT ORGANS. MOVE TO BLOCK 25
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24 YOU DID NOT USE LAMBDABOARD
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SUPERIOR LONG TERM R-VALUE. MOVE TO BLOCK 16
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16 HIGH COMPRESSIVE STRENGTH. ADVANCE TWO BLOCKS
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LAMBDABOARD IS AESTHETICALLY PLEASING
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8 MOISTURE AND WATER RESISTANT. MOVE TO BLOCK 14
YOU DID NOT USE LAMBDABOARD
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THERMOSET, DOES NOT MELT, DRIP OR SPREAD FLAME
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START
YOU ALWAYS WIN WITH LAMBDABOARD
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REDUCES ENERGY USAGE IN A BUILDING. MOVE TO BLOCK 25
YOU DID NOT USE LAMBDABOARD
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ENVIRONMENTALLY FRIENDLY & RECYCLABLE
AUTOMATICALLY ADVANCE TWO BLOCKS
Sometimes making the simplest choices makes all the difference to the environment. Lambdaboard is the eco-friendly choice when it comes to insulating your home,
office, building or warehouse. Lambdaboard offers the highest levels of insulation at an affordable price without damaging the environment. Use Lambdaboard today!
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H O M E
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R E F R I G E R AT I O N
w w w. l a m b d a b o a r d . c o m
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I N D U S T R I A L
S A I SC S TE E L AWA R DS 2 014 30 JELLICOE: CORPORATE OFFICE BUILDING CATEGORY WINNER 30 Jellicoe, situated in the heart of the Rosebank CBD, one of northern Johannesburg's most prestigious business nodes, won the Corporate Office Building category. The judges said that slenderness and proportion of the tapered tubular steel columns give the building an elegant aesthetic that sets it apart from its neighbours. “The ripple that is created by the louvre blades adds another level of detail that finishes off the overall concept.” The fineness of the steel elements enables them to work together to create a truly special building. It’s a case of “Imagine it, steel can build it,” they said. The building’s roof is supported on the slender steel columns and appears to sail over one of the building’s prominent features – the pristine white north wall. The wall and its horizontal window lines depend on the steel structure for stability. For the columns, tubular steel was chosen, firstly, to keep the structure as slender and elegant as possible and, secondly, because the columns on the north, east and west elevations are five storeys high.
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Feature sun screen louvres run vertically to the east and west faรงades and horizontally to the north faรงade.
DEVELOPER: Investec Property OWNER: Spareprops ARCHITECT: Paragon Architects STRUCTURAL ENGINEER: Pure Consulting
QUANTITY SURVEYOR: Brian Heineberg and Associates PROJECT MANAGER: SIP MAIN CONTRACTOR: WBHO STEELWORK CONTRACTOR/S: Omni Struct Nkosi, The Metalworker (sundry metalwork)
Reg No: CoR18.3 2013/068719/07
VAT No: 4930188372
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S A I SC S TE E L AWA R DS 2 014 MCDONALD’S: LSFB CATEGORY WINNER According to the judges, McDonald’s – which won the Light Steel Frame Building (LSFB) category entry for seven fast food outlets – Goodwood, Rustenburg, Silverlakes, Somerset West, Epping, Tembisa and East London – not only displayed excellence in the use of light steel framing, but also clearly demonstrated why 500 000m² of LSFB floor area has been built in the past calendar year. McDonald’s chose LSFB because it met their goal of an energy efficient building and because speed of construction is one of light steel framing’s main characteristics. By using LSFB they not only reduced material waste by 30% and transport costs by 80%, but the insulating layers reduced the building's energy requirements by 17% to 20%, compared with those of more conventional designs. The first LSFB McDonald’s outlet was erected in Goodwood, Cape Town and the entire shell of the building, including internal walls and exterior painting were completed in a mere two months. Road works and the installation of kitchen equipment took a further month to give a total construction period of three months. A comparable double-storey building using masonry construction would take at least seven to eight months. McDonald’s said that they were impressed by the speed of construction, and were very satisfied with the quality of the finishes, stating that they have now built the first ‘green’ McDonald’s in South Africa.
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“When McDonald’s decided to use light steel framing to express their new image in South Africa, it was for sound business reasons, showing that LSFB makes business sense to the most successful fast food chain in the world,” said Barnard.
DEVELOPER/OWNER: McDonald’s South Africa ARCHITECT: Architectural Design Associates STRUCTURAL ENGINEER: Silverline Group Engineering QUANTITY SURVEYOR: Silverline Group PROJECT MANAGER: Silverline Group MAIN CONTRACTOR: Silverline Group & Marc Barnfather STEELWORK CONTRACTOR/S: Techomes Construction, Innosteel DETAILERS/DETAILING COMPANY: Silverline Group Engineering
PANEL ROOFS
TRUSS ROOFS
RESIDENTIAL
FLOOR SLABS
RESIDENTIAL
S A I SC S TE E L AWA R DS 2 014
John Barnard, representing the Southern African Light Steel Frame Building Association (SASFA) said that the McDonald’s buildings exemplified the major benefits of the LSFB method, including speed of construction, quality finishes, energy efficiency, clean building sites with minimal waste of materials, and modular construction that allows interior changes with limited disruption.
S A I SC S TE E L AWA R DS 2 014 LUTHERAN COMMUNITY RECREATION CENTRE: LSFB CATEGORY COMMENDATION According to the project team of the Lutheran Community Recreation Centre which won a Light Steel Frame Building commendation, one of the most exciting parts of this project is the fact that the structure is like ‘a lantern of light’ in the city, achieved by the installation of fluorescent tubes alongside the steel framework. “Light injects spatial value into an urban space: the street becomes a place where you linger, a place to chat with your neighbour and soak in the diversity of the city, a place of positivity,” they said. The major activity that the extension provides is that of an upstairs dance studio as well as an outdoor theatre. The extension built atop an existing basement structure functions as a community hall, and is innovative in its use of materials. Specifically, the building is encased in a lightweight steel structure, which is wrapped by transparent sheeting that gives the appearance of a glass-encased cocoon. Light steel framing construction was chosen for the project due to the structural nature of building a three-storey structure on top of an existing basement. A conventional building would have been too heavy. The use of LSFB allowed the space to be utilised efficiently in a suburb where open land space is extremely rare.
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S A I SC S TE E L AWA R DS 2 014 “This light steel frame structure is unique in that we see the LSFB structure and methods used through the translucent sheeting for large portions of the external cladding,” the judges concluded.
DEVELOPER/OWNER: Lutheran Community Outreach Foundation ARCHITECT: Local Studio
STRUCTURAL ENGINEER: Jaco Richter MAIN CONTRACTOR: E4 Construction STEELWORK CONTRACTOR/S: E4 Construction DETAILERS/ DETAILING COMPANY: E4 Construction CLADDING: Clotan Steel LSF MANUFACTURER: Trumod
Steel leaveS a legacy
S A I SC S TE E L AWA R DS 2 014 ROSH PINAH ZINC CORPORATION: FACTORY AND WAREHOUSE CATEGORY WINNER The Rosh Pinah Zinc Corporation (RPZC), in Lüderitz, Namibia, won the Factory and Warehouse category for its Zinc and Lead storage warehouse. Erling says, “It’s great to be able to give recognition to a project beyond the borders of South Africa in a neighbouring country.” A 90 x 67 metre building, surrounded on four sides by buttressed concrete retaining walls, was used for the designated storage area. The challenge was how to roof the area, with a clear span of 65 metres, capable of supporting an arched roof which maximises storage volumes, but easily fabricated and erected in Lüderitz, well-known for its strong onshore winds and corrosive environment. Square hollow sections (SHS) for all the truss members were the natural choice for good reason. SHS offer ease of fabrication, internal members can be cut by saw – no special developments are necessary for connections as would be the case for circular hollow sections, the perimeter of the SHS is big enough to permit straightforward fillet welds for end connections, by keeping the members straight the curvature for the roof is created by different purlin lengths, no wasting of top and bottom chords is incurred as would happen had the members been curved, and tubular profiles are ideal for dealing with the prevailing winds.
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The design not only took into account normal gravity and wind loads, but also considered numerous accidental load issues, such as the effect of the front-end loaders driving into a retaining wall/buttress, but also of the possibility of the bucket at full height impacting with the roof trusses. For the judges, Franco Mordini, representing the Association of Steel Tube and Pipe Manufacturers of South Africa, said that this warehouse is not an ordinary industrial warehouse. “A number of characteristics make it stand head and shoulders above typical industrial buildings,” he said.
DEVELOPER/OWNER: RPZC – Part of Glencore Group ARCHITECT: Krenz Consulting Engineers – KCE STRUCTURAL ENGINEER: KCE QUANTITY SURVEYOR: KCE PROJECT MANAGER: RPZC – Part of Glencore Group MAIN CONTRACTOR: Salz-Gossow STEELWORK CONTRACTOR/S: Pro-Edge
I N S U L ATI O N
Isover Hydroboard Insulation Hydroboard is a high performance rigid moulded polystyrene board suited for applications where resistance to moisture and compression is required.
Ballast-gravel layer Isover Hydroboard Screed laid to fall Roof slab Geo-fabric filtration layer Waterproofing Figure 1. Inverted roof with Hydroboard Insulation
T
he physical properties of Hydroboard make it an ideal insulation board for under surfacebed, perimeter, cavity, inverted roofs (Figure 1.) and ideal for new builds and refurbishments. Hydroboard is mostly suited for inverted roof (protected membrane) applications, where the insulation is laid on top of the waterproof membrane which protects the membrane from UV degradation which is caused by solar radiation and the expansion and contraction that comes from summer/winter temperature cycles, which can be in excess of 40째C on some roofs.
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PROPERTIES
32 D
Density (km/m ) - tolerance +- 10%
32
3
Thermal conductivity at 10째C (W/m.K) (mean temperature)
0.032
Compressive strength (kPa) - @10% deformation
225
Tensile strength (kPa)
440
Water absorption % volume Temperature limits
< 0.9 -150째C to 70째C
Physical properties of Isover Hydroboard Insulation
Inverted roofs are designed with the waterproofing layer, usually a torch-on bituminous membrane, beneath the insulation, after which the insulation is loose-laid, and then a geotextile filter membrane is laid on top of the insulation. The filter membrane prevents the stone chippings penetrating the insulation if walked on and keeps out dust particles which may prevent rainwater from flowing to the outlets. The stone chippings can be walked upon for occasional maintenance, but it may be necessary to place paver slabs for regular walkways.
The board has excellent thermal properties which will greatly improve the requirements that ensure compliance with the relevant legislation, such as SANS 10400 XA and SANS 204 Energy Efficiency in Buildings.
Hydroboard is ideally suited to this application, as it has low water absorption values, due to its closed cell structure, and has high compressive strength.
FOR MORE INFORMATION, CONTACT:
Hydroboard is manufactured by the Expanded Polystyrene division of Isover Saint-Gobain and is manufactured in accordance with ISO 9001:2008 and ISO 14001:2004 standards.
(t) 0860 ISOVER (476837) (f) 0866731088 (w) www.isover.co.za Download the Isover app available for android and iOS.
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NDG P56253 011 803 6200
TH ER M
AL R E S I S TA N C E
VA L
UE
A DV E RTO R I A L
A roofing solution with umbrella benefits Introducing a lightweight roofing material with a heavyweight reputation to South Africa
A
ny builder worth his salt will tell you that eco-awareness is playing an ever-increasing role in the minds of the South African public.
Roofers utilising innovative Onduline® products can rest assured these materials more than live up to their green credentials. The global leader in lightweight roofing solutions, Onduline® is a company which originates in France and recycles some 200 000 tons of material each year.
Another primary consideration when buying roofing materials is aesthetics, and the company’s tantalising new release, likely to take the South African market by storm, is the Onduvilla® tile, which includes an artfully shadowed 3-D Mediterranean terracotta clay tile look. Indeed, the Onduvilla® tile caters to a variety of preferences, with colours available, including red, green, brown and black.
This diversion of waste from landfills diminishes the extraction and processing of raw materials, which in turn lowers energy consumption, reducing pollution.
The Onduvilla® tile caters to a variety of preferences, with colours available including red, green, brown and black. 50
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An uncompromising, full roofing solution, which is celebrating 70 years in the global marketplace of constant striving to improve its sustainable products, the Onduline® selection encompasses not only Onduvilla® tiles, but also Onduline® roofing sheets and Bardoline® shingle tile strips. Comprised of organic cellulose fibres impregnated with bitumen and natural mineral pigments, its products are subjected to intense heat and pressure, and coated in resin, ensuring guaranteed durability, even in harsh seaside climates, with a 15-year waterproofing guarantee. In keeping with the green theme, Onduline® products have outstanding insulation properties, which allow for cooling during our hot African summers and retention of heat in chilly winters. Excellent acoustic insulation properties also mean Onduline® has been used in sound studios and cinemas for soundproofing. Anyone who has ever tried studying in rowdy conditions can imagine the extreme discomfort of being educated in a typical rural South African school structure. Here, a dramatic African thunderstorm would muffle even the most strident teacher’s instructions and temperatures might range from searing highs to finger-numbing lows. Clearly then, schools, sports halls, as well as hospitals churches, warehouses and homes could all benefit from these excellent thermal and acoustic insulation attributes. The insulation perks, as well as overall aesthetics and the fact that the tiles are far less susceptible than materials such as thatch, to gecko infestation (and the associated waste cleanup), are just some of the many reasons why home owners are increasingly turning to Onduvilla® as an alternative to conventional roofing methods and thatch.
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A DV E RTO R I A L
Onduvilla® tiles are smaller than the Onduline® sheeting option, at only 107cm x 40cm. A total of 3.23 tiles are needed to cover one square metre and at 4kg per square metre, Onduvilla® is fantastically lightweight, making it a canny solution for homeowners who prefer a long-lasting, authenticlooking tiled effect. An added benefit for contractors is that this lightweight material is surprisingly easy to hoist to roof level.
Recently, local thatchers have seen the development of a trend away from thatch. This can be ascribed to the fact that: • Some thatched homes are situated in less than ideal locations. Thatched roofs, particularly in coastal zones with high humidity, and those shaded by overhanging trees which cannot be removed, and which prevent the roof from drying out effectively, can often succumb to rotting. • The limited lifespan of thatch necessitates replacement of such on average every 25 years, or less, but many homeowners are simply not in a financial position to do this.
But a correctly built thatch roof instils an undeniably rustic charm, particularly suited to South Africa’s bushveld and berg surrounds, which is why some clients request the oversheeting option, allowing their homes to maintain the look and feel of thatch inside, whilst protecting the outside thatch surface from exposure to the elements and consequent deterioration or rotting. The oversheeting method can really only be used in specific cases when the thatch is in an excellent condition and not rotting or full of dust. It would be a terrible risk to oversheet thatch if it were not in good condition. In most instances, however, homeowners have been delighted with their decision to convert wholly to Onduvilla® roofing. Here, the thatch ceiling method may be employed to maintain the thatch look and feel internally. The roof is stripped bare and a new layer of thatch is laid under insulation, using the original poles and laths. A major plus is that this new thatch is kept pristine as it is not open to the elements, so there is no rotting or dust fall.
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A DV E RTO R I A L
Before One of the advantages of thatch is that it creates a visually appealing roof with delightful contours and curves. But this contouring can be tricky to convert to alternative roofing solutions, since the existing thatched roof structure is usually built from CCA-treated gum or Eucalyptus poles. Because they have not been machined, as would normally be the case for roof trusses, each pole differs slightly, with varying widths and knots in the wood, and this must be taken into account along the entire length of the pole. Cintsa Thatching, a member of the Thatcher’s Association of South Africa (TASA) – which has 15 years of experience to its name, has been approved as a supplier and installer of Onduvilla® and Onduline® roofing in the Eastern Cape. The company said its clients had long been seeking a premium roofing solution suited to coastal areas, which was flexible enough to accommodate the original thatched roof design and structure.
After
Inside
Onduvilla fulfilled the requirements brilliantly. Non-corrosive and well-suited to coastal areas, the tiles could be curved to fit any roof shape, so they could be applied to an existing roof structure with little or no alteration. Minimal maintenance was required once fitted, and clients had a choice of attractive roofing colours.
It has taken a fair amount of trial and error to develop an appropriate technique to convert thatch to Onduvilla® roofs. When laying roof tiles on a conventional roof with straight planes and angles, the wooden frame which holds the tiles has branderings/battens set at specified distances, according to the tile being used. Tiles are applied to this flat surface. Curved surfaces change the regularity in the setting of the tiles, breaking the regular lines, spacing and coverage of the tiles and leaving them somewhat out of sync and oddly spaced. Attempting to apply rigid roofing tiles or sheeting to a structure with such irregularities, whilst still maintaining the original curves and contours, poses significant challenges and could result in a finish where tiles will not sit uniformly against each other. The roof could look uneven with dips and eddies in the tiles, and result in leaks – particularly in tricky corners and drainage valleys. This seems to imply that converting a thatched roof to an alternative roofing solution would mean the entire roof structure might need to be stripped and replaced with a regular, symmetrical sub-structure, before the new roofing product can be fixed to the roof. But this is not so.
Responding to this need in the roofing market, CEO of Cintsa Thatching, Jonathan Bosazza, pioneered the use of Onduvilla tiles in thatched roof conversions.
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CALL 0861 727 663 TO BOOK YOUR
EJOT® The Quality Connection
CLASSIFIED ADVERT
PAH SALES AGENT (PTY) Ltd Official Sales Agent for EJOT® Tel: +27 (0) 11 394 5721 Patrice.ahmann@gmail.com www.ejot.de
CALL 0861 727 663 TO BOOK YOUR SA ROOFING ADVERTISING SPACE!
Thatch converted to Tiles
Thatch converted to Onduvilla
Thatch converted to Onduvilla
Roof Structure Altered
Roof Structure Altered
Original Roof Structure Utilized
New Roofs Thatch Roof Conversions to: Tiles Onduvilla Onduline Tel: 043 738 5044 | Cell: 082 780 5725 Email: info@cintsathatching.co.za
Thatched Lodges, Houses, B&B’s & Inns, Lapa & Entertainment Areas Thatch Maintenance & Drainage Systems Approved Torch-on Applicators Building & Decking
A DV E RTO R I A L
Bosazza’s experience in a wide range of roofing projects including thatching and more conventional types, as well as his hands-on approach and passion for roofing excellence, have enabled him and his team at Cintsa Thatching to devise an effective system to the appropriate specifications to support Onduvilla® tiles. The result retains the shapely look of the original roof method and utilises the original structure. Cintsa’s highly trained team of thatchers and roofers, and their refusal to cut costs or take shortcuts allow the company to offer guarantees on their workmanship. All structural work is overseen by a qualified engineer and they proudly claim that theirs is the highest quality thatching and finishing available.
In oversheeting thatch, Onduvilla® can be fitted over the entire original roof or parts of it. A lightweight substructure is added without having to strip the entire roof and, depending on the colour used, the tile looks remarkably similar to actual thatch. A major advantage is that matching Onduvilla® valley and gutter accessories can easily be incorporated when used over thatch to provide drainage. Such specialised fixings and matching accessories comprise an important part of the Onduvilla® complete roofing system and the company will gladly give training in their use, making installation of Onduline® products a cinch. Since they are asbestos-free and have no sharp edges, Onduline® products are a quick, safe and easy-to-install option for even the ordinary ‘bloke in a shed.’ To ensure there is no margin for error, Onduline® provides a complete fixing guide, instruction manual and instructional video, as well as catalogue and leaflets.
As if the ease of installation and positive aesthetic, acoustic and insulation properties of Onduvilla® weren’t enough to convince buyers, the product is also pallet-sized and fits comfortably into an average-sized car boot. Its light weight means more tiles can be transported per load, whilst the flexibility of the product also negates breakage headaches associated with long haul transport over uneven African road surfaces. These attributes make Onduvilla® a surprisingly cost-effective roofing solution overall.
FOR MORE INFORMATION, CONTACT: Tel: 0861 98 99 89 Email: info@onduline.co.za Cell (Nicolas): 082 979 8294 Facebook: facebook.com/ondulinegroup Twitter: twitter.com/Ondulinegroup Web: www.onduline.co.za
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www.ashandlacy.co.za
Ashgrid Spacer System
Raises the Bar Creates a structurally sound roof cavity to accommodate insulation requirements prescribed by SANS 10400 XA in new build and refurbishment PROVEN QUALITY
Manufactured to international standards (BS EN ISO 9001: 2000) & UKAS accredited • Tested and used internationally • First in South Africa • 55 million lineal metres of the ASHGRID SPACER SYSTEM has already been used in the UK, Europe and Australia
ENERGY EFFICIENT
Enables the formation of a defined structural cavity to accomodate insulation • Prevents compression of insulation allowing it to perform to specification • Dramatically reduces energy consumption
MOST ADAPTABLE
Ideal for over-roofing • Eliminates consequential damages due to movement and inclement weather • Brackets fitted with EPDM base eliminating thermal breaks
EASY & EFFICIENT TO INSTALL
Easy and safe insertion of brackets (from the side or from the bar ends) • “Twist & Lock” application • Fewer components • Reduced installation times • Brackets can be easily repositioned if required
STRUCTURALLY SUPERIOR
Safe-Loc™ spigots – fast, secure and safe bar joints • New high performance brackets with deeper ribs for improved structural performance • No requirement for anti-sway brackets below 250mm construction depth • Allows continuous load transfer throughout the bar run • Deep ribbed bar, ensuring optimum fixing efficiency for the top sheet • High fixing torque and increased pull-out strengths achieved • Non-combustible
TECHNICAL BACK UP
Comprehensive technical backup • Nationwide distribution
M +27 832151782 (International) F 086-5376079 E dion.marsh@ashandlacy.com
A DV E RTO R I A L
The heat reflective aspects of Chromadek
THERMAL EFFICIENCY The consideration that every building is a combination of materials that can contribute to thermal efficiency is a promising avenue in innovative construction. With the advent of developments in innovative materials, consider for a moment what makes a Chromadek ® roof cooler as it becomes hotter when exposed to the sun. The logic behind heat reflectivity as an aspect of thermal efficiency starts with the explanation that dark colours absorb most of the visible light striking a surface, while lighter colours reflect most of that solar energy. This would suggest that colour is an indication of how much visible solar energy will be reflected. The amount of infrared energy that is reflected is often a function of the colour as well. Recently, new pigment technology has been introduced into Chromadek ® and Chromadek Ultim ® to change that assumption. New Infra-Red (IR) reflective pigments in the Chromadek ® and Chromadek Ultim ® paint systems allow for certain colours to reflect more total solar energy. This exciting development ensures that Chromadek ® and Chromadek Ultim ® are available in a unique paint system that features pigment technology that increases total solar reflectance (TSR) with a corresponding lower surface temperature. Four of the colours of the Chromadek ® range, Charcoal Grey, Dark Dolphin, Buffalo Brown and Aloe Green, utilise an advanced thermal technology paint system. This advanced paint system incorporates a heat reflective pigment, providing up to an 8°C cooler surface temperature benefit with improved durability.
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®
The durability of an exterior coating is measured according to the colour coated surface’s capability in maintaining gloss, colour and film integrity.
HOW HEAT REFLECTIVE CHROMADEK® WORKS The heat reflective pigments in heat reflective Chromadek ® are chemically inert and highly stable, allowing heat reflective Chromadek ® to reflect more of the sun’s energy, preventing the coating from directly absorbing energy, resulting in less heat build-up, which, in turn, results in longer life-cycles (less fading). To gain insight into heat reflective Chromadek ®, a demonstration recently showcased at UIA2014 titled, ‘The heat reflective aspects of Chromadek ®, what you imagine you can see’ captured the strides made in paint technology that enable Chromadek ® to become cooler. An extract from this recent UIA2014 demonstration shows that ‘seeing is believing’ when it comes to heat reflective Chromadek ®. The key aspect of the demonstration shows the visible contrast between the same heat reflective and non-heat reflective Chromadek ® colour.
Video Image (300-700nm)
NIR Video Image (700-1100nm)
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In addition, a darker colour can be configured through the application of heat reflective pigment to function as a lighter colour.
TO PUT THIS INTO A PRACTICAL CONTEXT
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The demonstration draws natural attention to the circled heat reflective colour appearing lighter, and therefore cooler, due to the heat reflective pigment, while the non-heat reflective colour remains darker, and therefore hotter. (NIR = Near Infrared)
Where annual cooling loads dominate, a highly reflective and highly emissive colour coated steel roof is optimal for reducing energy consumption. Where annual heating loads dominate, an unpainted galvanised steel roof is more desirable because of its low infrared emittance.
MAKE THE CHROMADEK® CHOICE, THE HEAT REFLECTIVE BENEFIT IS A REALITY THROUGH
Video Image (300-700nm)
NIR Video Image (700-1100nm)
• Lessened peak loads on energy consumption • Improved roof durability, less thermal cycling leads to constant temperature • Reduced air conditioning usage and costs • Reduced heating consumption and costs • Improved thermal comfort
Remember, if it doesn’t say Chromadek® it’s not Chromadek®. Look out for the unique heat reflective Chromadek® colours that offer these benefits at no extra cost. Since there’s more than meets the eye, Chromadek ® is the preferred steel colour coated roofing choice ideally suited to South Africa’s climatic conditions supported by its ‘Made in South Africa’ heritage. Visit the Chromadek ® website for more information at www.chromadek.com.
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Braytons Timbers
More than your everyday roofing supplier 58
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Established in 1976, Braytons has vast experience in the design, manufacture and supply of a wide range of roofing requirements, from the simplest of structures to the most complex of them all, for every sector of the market. N OV - D E C 2 0 1 4
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A DV E RTO R I A L BRAYTONS IS PROUD TO BE ASSOCIATED WITH MITEK After many years of utilizing Mitek as our design software service provider, we found a need to break the mould as it were and to revise the way we were doing things, opting to change our system supplier and moving to an alternative provider for a period of four years. This changed our way of thinking and helped propel us ahead to where we wanted to be during that period. We once again felt the need for change and are happy and proud to announce our return to Mitek as our system supplier. We certainly believe that this transformation assisted by the Mitek team and the 20/20 software capability, we will again catapult ourselves forward into another dimension.
Laminated beams with custom-designed structures and profile-cut gusset plates are used to create the desired effect.
WHAT THE BRAYTONS TEAM CAN OFFER: Our highly skilled team of designers, backed up with a string of trainees constantly moving through the system, guarantees that high skill levels are maintained, not only for your everyday structures, but for any requirements, whether simple or complex. Specialised projects, such as hospitals with a multitude of services within the roof space, are a regular occurrence at Braytons. Together with the architects, mechanical and structural engineers, we really turn our clientsâ&#x20AC;&#x2122; vision into a reality. All products carry the SATAS mark (South African Timber Auditing Services) and Braytons Timbers is registered with the Institute for Timber Construction (ITC-SA).
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Specialised laminated structures are undertaken by Braytons Timbers on a regular basis. Whether for domestic dwellings, churches, public buildings or a simple carport, we do them all. With our custom-built trailers and trucks, we can move almost any size project.
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LEADING ROOF TRUSS SYSTEM SUPPLIER IN SA AND THE WORLD
Prefabricated timber roof trusses
• Light Gauge Steel Trusses • Steel Wall Framing
eCo Fasteners® are timber and steel fastening devices that provide strong and rigid connections to any building structure. A network of more than 190 licensed roof truss manufacturers across South Africa, provides a competitive and economic solution to even the most complex of roofing problems. This MiTek fabricator network, using MiTek’s state-of-the-art software programs, provides high quality, purposeengineered truss units to satisfy the need of an ever increasing complex roof market. The scope of MiTek’s services includes not only unrivalled expertise in terms of professional structural engineering service but also the extensive Research and Development into all aspects of timber and light gauge steel roof design and construction as well as a full range of manufacturing equipment - that makes MiTek a World Leader. creating the advantage World Leaders since 1956. MiTek Park,754 16th Road, Randjespark, Ext. 34, Halfway House,1685. Midrand (Head Office) Tel: + 27(0) 11 237 8700 Cape Town Tel: 021 905 0244 • Durban Tel: 031 700 6332 • Port Elizabeth Tel: 041 581 7525 email: marketing@mitek.co.za • www.mii.com/southafrica *MiTek
Industries South Africa (Pty)Ltd, a division of the worldwide MiTek Group.
A DV E RTO R I A L HOUSING DEVELOPMENTS: From low-cost housing and medium-cost structures to the high end of the market, as well as multiple storey developments, we tackle them all.
PRODUCTION FACILITY AND RETAIL OUTLET: To back up sales and our highly skilled technical department, we have a 130-strong production team in our 6 000m2 factory, which operates under the leadership of highly dedicated individuals, ensuring that production takes place quickly and efficiently to client satisfaction.
WHERE TO FROM HERE? Braytons Timbers has experienced rapid growth in 2014, and with current, as well as future projects in the pipeline, we expect steady growth during 2015, due to the dynamic group of individuals within our team, and, of course, the support of our valuable clients, for whom we are grateful. Our projects extend beyond the borders of South Africa into neighbouring Mozambique and Namibia; Braytons Timbers delivers anywhere. Watch this space for further exciting developments. Weâ&#x20AC;&#x2122;ve got Africa covered. From the entire team at Braytons Timbers, we take this opportunity to thank all of our clients and suppliers for their support and input and we wish everyone a blessed Christmas and festive season. May God bless you all.
FOR MORE INFORMATION, CONTACT: Tel: 034 212 3803 Web: www.braytons.co.za DUNDEE Tel: 034 212 4082 Fax: 034 212 4085 Email: salesadmin2@braytons.co.za
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JOHANNESBURG Tel: 011 395 1027 Fax: 011 973 1943 Email: salesadmin4@braytons.co.za
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EASYFLASH
Waterproofing made easy Roll of EasyFlash
colour coating
Seals junctions between walls and roof tiles. All weather durability for 15 years.
aluminium composite butyl backing Enlarged view of EasyFlash
Connection Strips
SIMPLE DIY APPLICATION 1
Measure width to seal the abutment.
Cut EasyFlash and connection strip.
4
Position EasyFlash, then remove release paper to stick butyl backing on the wall.
3
2
Fold EasyFlash along break line.
5
Remove the release paper on the tile side and stick onto the clean surface.
6
Secure the Connection Strip to the upper edge of the EasyFlash. Apply weather resistant silicon sealant between wall and strip.
Please note: Surfaces need to be clean and dry before installing.
THE LASTING ROOF SEALING SOLUTION • Easy DIY installation: highly stretchable, mouldable, creped structure (up to 60% stretch) • Sustainable sealing: high tear strength & extreme adhesion (CH bond butyl glue) • 15 years maintenance-free with the Connection Strip application Available in Brown, Black and Terracotta Can be painted with any acrylic based paint.
AVAILABLE AT LEADING HARDWARE STORES Contact Coverland for more information: info.sa@monier.com | Subject line reference: SAR EasyFlash
ROOFS THAT LAST
I N S U L ATI O N
Thermguard involved in 300 house project Thermguard, the original cellulose fibre insulation manufacturer, has been busy insulating houses in the suburb of Panorama in Pietermaritzburg.
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hese houses were previously not insulated, but since the introduction of the SANS 10400XA – Energy Usage in Buildings legislation, insulation has become compulsory in all new buildings. For this reason, Khonastone Builders, the developers of the houses, wished to add insulation to the project in order to comply with the new legislation. Director, Anthony Raaff, chose Thermguard for a number of reasons. “Thermguard is very cost-effective insulation and their fitted prices are amongst the most competitive in the marketplace!” says Raaff, adding, “Thermguard is made from 80% recycled newsprint and is thus very eco-friendly, a ‘green’ quality we really liked. Thermguard has also been around for 30 years, so this gives us confidence in the product.”
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I N S U L ATI O N The houses are being insulated to a depth of 100mm thick which is the required thickness in the Pietermaritzburg area as prescribed by SANS 10400XA – Energy Usage in Buildings. They range in price from R530 000 to R750 000 and are being sold off plan. “Sales are moving very nicely,” says Raaff. One of the great advantages of Thermguard is that as loose fill insulation, when blown onto the ceiling, it gives 100% cover. It leaves no blind spots where heat gains and/or losses can occur and is thus a very efficient insulation. The contractors on site are one of Thermguard’s original contractors, Holley Harveytile, and the owner, Greg Hayton, says the contract is running very smoothly. For more information, visit www.thermguard.co.za.
I N D U S TRY I N S I G HT
Supervision + Knowledge + Training = Quality When you want to buy a good property, the old saying goes “position, position, position.” Likewise, if you want to make sure you build a good building, the saying is “supervision, supervision, supervision.” By Paul Koning, Construction Consultant at KVB Associates
Image by Matt McGee.
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hese days, however, this does not appear to be the case, and in many cases, there is a distinct lack of good and correct supervision on building sites. This applies right from the main building contractor to the sub-contractor to the labour force on site. You cannot blame the man with the shovel for a bad job – you must look at his boss. Waterproofing, which is normally out of sight or covered over and can be difficult to get to after the completion of the building, and the roofing are both important elements of a building. One of the main problems facing the building industry as a whole is the lack of skills, qualified tradesmen and training. This applies to the waterproofing and roofing trades as well. Education is vital in every sphere of life. If people are not educated from an early age and continue to be educated, the scenario for a vast number of unemployable people will become irreversible. This is quickly becoming a reality.
THE LACK OF SKILLS AND QUALITY TRADESMEN COULD BE ATTRIBUTED TO A NUMBER OF FACTORS: • The fact that the building industry is very cyclical; one day there is too much work and the next there is none. This makes for a situation where tradesmen move into other industries where regular work is available all year round. • These days one does not have to be officially qualified to do a tradesman’s job in the building industry.
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In days gone by one had to be a qualified roofer to put roof coverings on. Today there are no apprenticeships for roofing or waterproofing, so how are people trained? The answer is mostly by some dedicated manufacturers/ suppliers of waterproofing and roofing materials who offer the contract customers industry application and product knowledge training on their specific products. Some waterproofing and roofing companies do their own inhouse training. There are only some private training organizations that provide waterproofing and roofing courses, mainly in the Western Cape. • Where training courses are offered, the duration is only for weeks, not years and the student is then ‘qualified.’ • The main contractors rarely employ their in-house workforce, but rather employ labour only sub-contractors in a lot of the trades, mainly the wet trades and specialist sub-contractors. Fortunately, there are still a few good building contractors and specialist sub-contractors out there that employ their own staff and train them. • Building contracts are also often behind on program and therefore will put undeserved pressure on their subcontractors to complete their works. This results in various trades not only working out of sequence, but also working on top of other trades. This is a very prominent problem with the waterproofing trade. There is also often little or no proper supervision, especially by sub-contracting companies. Workers are dropped off on site in the morning and are picked up again the end of the day, and a junior supervisor may go to site once during the day.
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• It can only start from the top, so the CEO of the company must also be educated to become quality and training conscious and not just always look at the ‘bottom line.’ A company’s move to become efficient, not wasteful in terms of time and material, to become more productive and to have pride in the job, can only be done through training, education and by example. • All management and staff, from top management to the man with the shovel or broom on site, must be educated and motivated. If one understands why one is doing something and to what end, surely it would make the job more purposeful, and there is then a better chance it will be done properly the first time.
Today, many buildings are bigger, better, and more intricate than they were 30 years ago. However, the client often expects them to be built more quickly and with less skilled and qualified professionals down to the labour force. • The clients, principal agents, the main contractors and the sub-contractors must not accept second-best workmanship. In this case, the work must be condemned and redone until it is right. • The popular notion that education, training and proper supervision will contribute to an unrealistic increase in construction costs is true. Salaries and labour bills will escalate when employing good, qualified staff and there is a cost for training and education. But productivity will improve; there will be more control over materials with less waste, less down time, far fewer costly ‘comebacks’ and happier clients. With good controls, well-trained and motivated staff and good supervision, building costs would not escalate out of proportion. The building owner would be happier, as he would get a better product at the end of the day, with a much lower maintenance bill over the years.
• Training authorities must start producing and apprenticeships must be reintroduced. Only qualified personnel should be employed in the related trades. • There must be quality and qualified supervision on site every day. The contracts directors or senior contracts managers of specialist sub-contracting companies must inspect all their jobs every day and go through the work with the main contractor. They must not be bullied into doing work that is incorrect or not to the trade’s standards. • Building programs are too short, which does not allow for correct drying, curing, or settling of certain elements of the structure before the next element is built. This results in unnecessary stresses and cracking of the structure. Building contract periods should be extended.
The importance of education and training, motivation, knowledge and supervision, above all, in all construction spheres cannot be overstated. To make the necessary changes to ‘build better’ is not an overnight exercise. It will take a considerable amount of time and commitment, therefore the sooner we all start to adopt a policy of ‘supervision, knowledge and training’, the sooner there will be better buildings.
ROOF SERVICE LEVEL AGREEMENT Manage your roof on a yearly basis and save big
FROM R10 M²
OR LESS DEPENDING ON THE SIZE OF YOUR ROOF INCLUDES: - Waterproofing - Regular inspections - Minor Maintenance - Gutter and downpipe maintenance
Handle problems as they happen Protect your roof warranty
www.coolcoatings.co.za
www.arar.co.za
I N D U S TRY I N S I G HT
SO HOW DOES THE BUILDING INDUSTRY AS A WHOLE CHANGE THIS TREND?
ACT NOW
Call us on 084 515 7234 or riaan@arar.co.za
SAVE
MONEY
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Roof servicing & maintenance When it comes to roof maintenance, it’s imperative to keep up with climate change and the unpredictable weather patterns that come with it.
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xtreme hot and cold weather can have a significant impact on a roof, where the thermal shock will increase and put even more strain on the building and roof structure. Older buildings tend to take even more strain than newer buildings. By servicing a roof regularly, the heat build-up is minimised, which could help with the cooling load inside the building. This will reduce gutter and downpipe maintenance dramatically. Prevention is better (and more cost-effective) than cure. With newer buildings, regularly cleaning the roof could even be important to retain the material warranty. Older metal roofs require a more advanced maintenance plan to reduce replacement costs later on. With ever-increasing inflation and material costs, it is possible that the replacement cost could increase by 200% in 10 years. Asbestos roof sheets are in a category of their own and need constant maintenance due to the health and safety issues surrounding this material. Asbestos maintenance must be done by a registered asbestos contractor who will assist with asbestos assessments and registers. The graph below compares maintenance and replacement costs on a 1 000m² building:
COMPARISON BETWEEN REPLACEMENT AND MAINTENANCE
WHY DO YOU NEED TO SERVICE YOUR ROOF REGULARLY? • Prevention is better and more cost-effective than cure • Proper maintenance pays for itself • Issues are identified before they happen • A well-maintained roof looks good
WHY IS ROOF MAINTENANCE OFTEN NEGLECTED? • Limited access to roof • Insufficient knowledge about roofing and roofing products • The roof is the last place where money is spent • People forget the value of the roof
HOW CAN WE HELP YOU? BEFORE WE START WE NEED TO: • Conduct a roof assessment • Assess costing to get roof to a manageable standard
SERVICES WE OFFER: • General roof maintenance • Waterproofing • Roof cleaning • Gutter and downpipe maintenance • Insulation inspections and repairs • Eaves and fascia maintenance • 3rd party inspections Two call-outs will be done – one in the summer months and one in the winter months.
WHAT WILL IT COST ME? COST PER M² We have developed an RSLA and it could be adjusted to suit your needs.
0-1999 m²
R10.00
2000-2999 m²
R 8.50
3000-3999 m²
R 7.50
4000-4999 m²
R 5.50
5000-10 000 m²
R 3.50
10 001 onwards
Negotiable
FOR MORE INFORMATION, CONTACT: Office: 087 0494 103 Albie: 084 453 4884 Riaan: 084 515 7234
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Info@arar.co.za riaan@arar.co.za
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E V E NT S
The new passion – create something with wood Wood Conference celebrates its 5th anniversary on 17 February 2015
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ince its inception in 2000 with 60 participants, the Wood Conference has grown to host almost 400 delegates in 2014 and has held CPD accreditation over the last 3 years. Well represented by professionals across various sectors, this large forum brings together local and international speakers highlighting new and traditional trends using wood. The objectives of the conference are to provide a platform for industry professionals to share information about timber technologies, architecture, standards, and topical issues, to network with a highly targeted delegate base, and also to motivate upcoming architectural and carpentry students on the benefits of working with wood. A large number of carefully selected local and international speakers will present their topics relating to timber in architecture and sustainable construction in line with South African trends and standards. Already secured are two European speakers who will present on timber construction for large buildings (Elephant Park), as well as tourist-driven buildings, like sustainable hotels, for example. The Wood Conference 2015 programme, which comprises a rich line-up of speakers and workshops, aims to share a great deal of information, vision and knowledge.
conference will also be hosted free of charge by HWZ International SA (Pty) Ltd. Furthermore, the organisers are proud to announce that foreign investors are showing keen interest in investing in technical timber to produce wooden houses, and the construction know-how that leads to creating jobs for the local market – activities which were brought about by the impetus of the Wood Conference. In conjunction with the Wood Conference, the Wood Student Foundation (WSF) was founded, with the aim to give young students an opportunity to study timber related subjects, or win an internship in Switzerland, by participating in the WSF competition and submitting the best thesis on wood. The Wood Conference’s founder, George Kuratle and his team look forward to your participation. TITLE: The new passion – create something with wood LOCATION: East Ballroom, CTICC Convention Centre, Cape Town DATE: 17 February 2015 REGISTRATION: www.woodconference.co.za
In previous years attendance to the Wood Conference was free of charge and through skillful planning, the fifth anniversary
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WATE R PROO F I N G
Sika seals university roof Sika products specified for NMMU’s new Business School, the first public and education building in South Africa to receive the official green design rating accreditation from the Green Building Council of South Africa (GBCSA).
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n 2011 Port Elizabeth’s Nelson Mandela Metropolitan University (NMMU) retained main contractor, WBHO to embark on an ambitious project to design a purpose-made building to house its Business School Faculty. By 2013, with construction almost complete, The Workplace Architects specified products from Sika’s top quality BlackSeal range for waterproofing of the roof area. The R116 million building is situated at the University’s new Second Avenue Campus. Recommended sub-contractor, Aspect Waterproofing, prepared the surface of the roof by applying a coat of Sika BlackSeal Primer, a one-part, solvent-based bitumen primer that improves the adhesion of Sika’s bituminous coatings and membranes. This quick-drying primer is supplied ready-to-use and may be applied by brush, roller or airless spray. This project constituted the largest Sika BlackSeal application in the Eastern Cape – a total of 1 750m2 .
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The primer was followed by a coating of Sika BlackSeal T-140 SG (0°C), a 4mm torch-on sheet waterproofing membrane based on atactic polypropylene (APP) modified bitumen that is reinforced with polyester non-woven fabric. It is flexible to 0°C and has a sand broadcast surface while the reverse side is faced with polyethylene film to facilitate installation. Age- and weather-resistant with good dimensional stability, Sika BlackSeal T-140 SG (0°C) provides high tensile strength and elongation. Its excellent resistance to water vapour makes it the ideal waterproofing product for a wide variety of applications. If installed by a recommended applicator to specification, this product has a ten-year warranty. Since this bitumen coating would be exposed to UV damage, Sika BlackSeal Silvercoat was then applied as a protective coating. This one-part, solvent-based aluminium-pigmented bitumen with excellent reflective properties is similar to BlackSeal Primer in that it is quick-drying and may be applied by brush, roller or airless spray.
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WATE R PROO F I N G All vertical joints to the walls were sealed with Sikaflex-11 FC (brown), a one-part, moisture-curing elastic joint sealant based on polyurethane. The brown colour was specified to blend in with the red brick construction. This ready-to-use, solvent-free and odourless product comes with a ‘very low emission’ EMICODE EC 1 PLUS approval. It is age- and weather-resistant, provides bubble-free curing and very good adhesion to most construction materials. Sikaflex-11 FC may also be used as a multipurpose adhesive and is suitable for indoor and outdoor use. Although not the first NMMU project in which Sika’s top quality products have been specified, Sika is justly proud to have been part of NMMU’s new Business School since it is the first public and education building in South Africa to receive the official green design rating accreditation from the Green Building Council of South Africa (GBCSA).
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Coatings for Africa 2015 In line with the changing face of Africa’s growing paint and coatings industries, Coatings for Africa 2015 symposium and expo, taking place 11-13 May 2015 at the Sandton Convention Centre in Johannesburg, sets out to drive innovation and education in the paint and coatings industry across the continent.
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he African coatings industry remains key to supporting the continent’s ever-growing development requirements. The future for the paint and coatings sector looks particularly promising, given the strong economic outlook, long-term demographic growth and rising urbanisation across Sub-Saharan Africa. Recognising opportunities in South Africa and beyond, Coatings for Africa is creating a completely new experience in 2015. With a distinctly pan-African focus and a minimum of ten African countries represented, the event connects buyers and sellers from across Sub-Saharan Africa as well as globally. To generate additional synergies, Coatings for Africa is hosted alongside African Construction and Totally Concrete Expos, Africa’s biggest gathering of the concrete and construction industry. Africa’s only three-storey expo is opening even more doors for business development.
The Protective Coatings Seminar focuses on challenges around corrosion for users from the industrial and automotive sectors. The programme is completed by a series of free workshops for users of paints and coatings products on the exhibition floor. Coatings for Africa is hosted by the Oil & Colour Chemists’ Association (OCCA) and the South African Paint Manufacturers Association (SAPMA) in conjunction with Hypenica and is the biggest showcase of coatings technologies, paint and related products on the continent. Coatings for Africa connects the entire value chain, from raw material suppliers to end users of the finished paint or coatings products. Attendees can expect 120+ exhibitors, 2 000 attendees, 10+ African countries represented and 30+ expert speakers. For additional information, visit www.coatingsforafrica.org.za or email Stefanie Pillay at stefanie.pillay@hypenica.com.
A comprehensive conference programme caters for all needs across the value chain. A technical symposium presents the latest innovation and developments the global paint and coatings industry has to offer. The Coatings for Construction Seminar offers a one-stop solution for users of paints and coatings from the construction industry.
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