The Trowel August / September 2014

Serving the wall & ceiling industry since 1953 • www.wallandceiling.ca • August / September 2014

in this issue Buiding Envelope Thermal Bridging Guide MagO Goes Outside Tensile Cladding: Alive with Colour Publications Mail / Agreement # 40719512

2014 HardieDesign Winners

4010 6A St. NE Calgary, AB 403-265-9005 Alberta • Washington • Idaho • Montana • Oregon • California • Alaska

Serving the wall & ceiling industry since 1953 • www.wallandceiling.ca • August / September 2014

in this issue Buiding Envelope Thermal Bridging Guide MagO Goes Outside Tensile Cladding: Alive with Colour Publications Mail / Agreement # 40719512

2014 HardieDesign Winners

The Trowel team Lara Perraton, Group Publisher lperraton@pointonemedia.com Jessica Kirby, Editor 877.755.2762• jessica.kirby@pointonemedia.com Lara Perraton, Advertising Sales 877.755.2762• lperraton@pointonemedia.com Christina Tranberg, Advertising Sales 877.755.2762• ctranberg@pointonemedia.com

contributing writers Laura Adams Anne Cochrane Peter Francis Ian Moes Stephen Reynolds Justine Shaffer

cover photo

CONTENTS •

august / september 2014

06 Building Envelope Thermal Bridging Guide

recent study calls into question the effect of thermal bridging on energy A efficiency and may change the composition of wall assemblies and insulation.

photo courtesy of Birdair

10 MagO Goes Outside

Published bi-monthly by

Magnesium board makes a strong, versatile exterior cladding in any conditions.

Point One Media, Inc. The Trowel P.O. Box 11, Station A Nanaimo, BC V9R 5K4 t: 877.755.2762 • www.wallandceiling.ca

14 Tensile Cladding: Alive with Colour

While information contained in this publication has been compiled from sources deemed to be reliable, the publisher may not be held liable for omissions or errors.

Contents ©2014 by Point One Media Inc. All rights reserved. No part of this publication may be reproduced or duplicated without prior written permission from the publisher.

TFE Film makes a striking and weatherproof porte-cochere in Yonkers, E New York.

17 James Hardie Reveals the 2014 Hardie Design Winners

Traditional and modern design winners show off Hardie’s invaluable features.

Printed in Canada. Postage paid at Vancouver, BC.

Departments & Columns

Return postage guaranteed. Canada Post Canadian Publications Mail Sales Product Agreement #40719512.

04 editorial

Return undeliverable Canadian addresses to: The Trowel Circulation Department

20 around the world

P.O. Box 11, Station A Nanaimo, BC V9R 5K4 e: circulations@pointonemedia.com

23 building science 24 feature focus

Journal of Record for Simply scan the QRCode with your smartphone to be taken directly to the wallandceiling.ca website.

The Trowel is a registered trademark of the BC Wall & Ceiling Association.

The Trowel is published six times per year expressly for members of the wall and ceiling industry.

25 it’s the law 26 technical update 27 industry news 27 advertiser index

In the next issue: Tools • Innovative Wall Systems • Business Management

from the Editor’s Desk

By Jessica Kirby Editor

Social Media in Trades I laugh a little when I think to myself there was a time when I thought Facebook was headed for the same short-lived hype and eventual doom so many 90s rock stars encountered—the kind of one-hit-wonder quasi-stardom that gets everyone in a hyper, love-stuck panic before fizzling away so quietly it isn’t until its gone that people say, “What every happened to ...?”

But here we are, 10 years later and Facebook is larger than life. Its complementary services like Twitter, MySpace, Reddit, Skype, Facetime, and others are also brimming with popularity and growth, each at its own pace and with its own history featuring a brief flirtation with nonsense before evolving into something useful.

per cent think being connected via social media gives their business a better sense of appearing established in the world.

That said, only about a quarter of tradespeople have accessed social media and created a profile or page for their business and only half of those say they actually use it regularly. This trend has all the makings of a typical evolutionary journey for digital media: catch the frenzy, hurry and throw something up there so you’re neck and neck with the competition, and then promptly forget about it and retreat to more important things like, say, building stuff.

That’s right: I called Social Media useful.

Because although it is still largely the domain of the young and ubiquitously connected, Social Media has managed to transcend age, geography, religion, and even dictatorship rule in some parts of the world, to have a purpose and place in almost every segment of society: even construction.

As we all know, there is a labour shortage looming and as a result, the labour pool is shifting. Not only does the industry have seats to fill, it has a profile to correct—one that must include your typical worker as someone digitally inclined, purposefully connected, and technically minded in a revised sense. Smartphones are as much a part of a supervisor’s kit as a helmet and truck, and their primary purpose for companies is enhancing productivity.

According to a study in the UK, eight out of ten tradespeople are using social media to reach out to customers for free, and 43

Communication tools alone can help contractors avoid long commutes to meetings, photo and document sharing

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4 » The Trowel

basically renders the fax machine obsolete, and everything from estimating to costing can be covered with one app or another. A simple text to an employee thanking him or her for a job well done can boost employee morale, and time-keeping or tool-tracking software can save you a bundle.

Social Media has revolutionized the idea of marketing in construction. For one thing, it takes the head crunching confusion out of how to market a construction company with just a couple of taps on a tablet screen: Tap 1. Take photo of beautiful drywall project.

Tap 2. Post it to Facebook.

Tap 3. Write brief (optional) caption.

Tap 4. Write one sentence to thank all 345 people who “like” your photo in the first ten minutes and revel in the fact that you just marketed your work with less effort than it takes to order a double double.

For those without a clue where to begin, I would love to recommend a course in Social Media marketing, but we both know you have no time for that. Instead, search around, find profiles or services you like to read or follow and imagine what might make the most sense for your business. And be choosy: you can jump on every single site out there and drive yourself crazy, or you can pick one or two things that look as though they have potential and dedicate a couple hours a week to making that one thing great. With just the right attention (and patience) Social Media may become a stable, lifelong friend. ■

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Talisman Square, a 40-year-old residential apartment complex, required a complete retrofit of the building’s structural elements and exterior façade without forcing the owner to disrupt current tenants. Dryvit’s Outsulation® Plus gave the design team flexibility to meet the detailing challenges while providing a cost-effective solution that created a brand new exterior and energy efficient façade that helped reduce heating operating costs by 20%.

Visit dryvit.ca/restoration to find out more.

For more information call 1.800.263.3308 e-mail info@dryvit.ca or visit dryvit.ca CCMC-12874-R

Building Envelope THERMAL BRIDGING GUIDE

by Jessica Kirby Photo courtesy of iStock

A guide published by Morrison Hershfield Ltd. in co-operation with industry stakeholders including BC Hydro, Canadian Wood Council, the Homeowner Protection Office, FPInnovations, and Fortis BC calls attention to the impacts of thermal bridging on building energy performance, and could change the way industry approaches exterior wall assemblies.

The principle goal of the collaborating organizations is to promote energy-efficiency in buildings by increasing awareness of the impact of and methods to mitigate thermal bridging. To meet these goals, the Guide addresses a number of obstacles currently confronting our industry by:

• Cataloguing the thermal performance of common building

The numbers point to the importance of addressing thermal bridging before mandating an increase in insulation materials, as heat will always take the path of least resistance.

envelope assemblies and interface details.

• Providing data driven guidance that will make it easier for

the industry to comprehensively consider thermal bridging in building codes and bylaws, design and whole building energy simulations.

• Examining the costs associated with improving the thermal performance of opaque building envelope assemblies and interface details, and forecasting the energy impact for several building types and climates.

• Evaluating the cost effectiveness of improving the building

envelope through more thermally efficient assemblies, interface details and varying insulation levels.

Building codes tend to target building performance in terms of energy use, R-value of the wall and ceiling assemblies, and load on the heating and cooling systems. As research points to the importance of reducing thermal bridging to ensure buildings perform at their intended levels, code officials are noticing greater measures may be necessary.

“The traditional approach of building codes to reducing space heating loads in buildings was to introduce progressively higher levels of thermal insulation and more stringent glazing performance requirements,” said the report. “This was a logical approach in the past because standard practice was to largely overlook thermally bridging.”

Previous research suggested the effects of thermal bridging were negligible if the cross-sectional areas of these conductive components were small; in some cases these areas were were purposely ignored because of the difficulty involved with making an accurate assessment. However, new research says these areas are indeed essential in buildings meeting their performance targets.

“The additional heat flow due to major thermal bridges, including ones with small cross sectional areas such as shelf angles or flashing around windows, can add up to be a significant portion of the heat flow through opaque envelope assemblies,” said the report. “For example, the contribution of details that are typically disregarded can result in the underestimation of 20 to 70% of the total heat flow through walls.”

These numbers point to the importance of addressing thermal bridging before mandating an increase in insulation materials, as heat will always take the path of least resistance. There are also cost benefits to closing up or minimizing thermal bridges rather than adding insulation, which may not be effective as a stand-alone measure.

The BC Building Code, National Energy Code for Buildings (NEBC), and ASHRAE 90.1-2010 call for high energy efficiency and substantial insulation values; however, none have implemented processes for addressing major thermal bridges like window and door openings, shelf angles, slab edges, parapets, or other architectural features that breach the wall assembly.

The report makes some recommendations for reducing thermal bridging and improving energy efficiency and building performance. Wood-frame construction, for instance, is inherently more thermally efficient because of the lower conductivity of wood compared to concrete, steel-frame, and masonry construction.

“As a result, the impact of thermal bridges caused by wood framing is less than materials typically used in noncombustible construction,” said the report. “The low conductivity of wood also makes it easier to account for thermal bridging in calculations because lateral heat flow is less of an issue and assumptions of parallel path heat flow are more valid for most wood-frame details.”

Attention to interface details in relationship to the widening gap between the building envelope thermal performance the energy codes assume and what is actually being built is extremely important in rectifying the issue. The researchers’ analysis of archetype buildings with concrete walls insulated on the inside to levels stipulated by ASHRAE 90.1-2010 show U-values two to three times higher than the prescriptive U-value and three to four times the values set out in NECB 2011. With high glazing values, the percentage grow 25 to 50%.

“It is clear that for future iterations of energy codes and standards requiring improvement of interface details will likely have a much more significant impact than requiring additional insulation,” said the report. “Moreover, improving wallandceiling.ca » August / September 2014 » 7

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BUILDING ENVELOPE THERMAL BRIDGING GUIDE interface details or devoting more attention to avoiding large thermal bridges is generally more cost effective than solely adding insulation.”

The Guide, which is broken into three main sections for ease of use, contains helpful information for technical committees for energy standards, regulators, utilities, architects, mechanical designers, building envelope consultants, energy modellers, developers, manufacturers, and trade organizations.

The Building Envelope Thermal Analysis (BETA) Guide outlines how to effectively account for thermal bridging and is backed up by an extensive catalogue of thermal performance data. This information is essential for practitioners evaluating building envelope thermal performance.

Researchers and regulators will be interested in the sections focused on market transformation, which includes an evaluation of cost effectiveness and energy savings in common large building types.

View the report in its entirety at http://www.bchydro. com/powersmart/builders_developers/high_performance_ building_program.html?WT.mc_id=rd_construction ■

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8 » The Trowel

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MagO

Goes Outside

For many designers

By Peter Francis , Photos courtesy of MagO it is challenging to find the right cladding system for commercial and high-end residential projects.

The multiple demands for the right appearance, rainscreen technology, robust durability, and affordable cost along with workable delivery times and non-combustible ratings return only a few options with most of these being imported and expensive.

10 Âť The Trowel

MagO Cladding was developed in 2013 to fill the vacuum left by the removal of Panasonic’s Ceraclad from the Canadian market. MagO Cladding, though, is different from Ceraclad and other high density fiber cement cladding systems in a number of ways.

First and foremost it is made from 15 mm-thick boards of magnesium oxide cement (MgO). MgO cements prove to be stronger and easier to work with compared with fiber cement products.

In addition, there are no silicas or other carcinogens to be concerned about and MgO can easily be worked with carbide tools. In MagO’s case, this includes custom carbide router bits that allow the edge profile to be added to cuts made on site.

A case in point is a residential site in Burnaby where contractor Paul Blakely of Infinity Pacific Custom Homes installed 3,500 square feet of MagO Cladding on a custome single family residence.

The MagO Cladding was installed over wood framing with a water barrier membrane, providing a clean, modern appearance in the contemporary home and easy installation and finishing for the contractor.

PAC WEST partners with ROCKFON® to offer TOTAL CEILING SYSTEM SOLUTIONS

MagO Cladding is attached by clips.

The first panels on this residential project were applied above the belly band starting with base clips, said Peter Francis, MagO Cladding. “Vertical end panels are machined differently to horizontal panels allowing the panels to dry fit with shiplap edges,” he said.

A row of clips is attached to the top (horizontal) or side (vertical) of the panels, which forms the connection for the adjacent panel.

Two-foot wide panels, connected to the building by custom clips, demonstrate ultimate negative wind loads of 40 psf or the ability to withstand 220 km/hr winds.

“Only a screw gun is required for installation while a circular saw and carbide blade easily makes field cuts,” said Francis. “A custom router bit with 1/2-inch shank is provided for adding the machined edge in the field.”

Installation started at the left side and worked counterclockwise around the home.

“Careful measurements are required to balance the size of the last panels and Paul found ways to install panels from right to left,” said Francis. “Spacers needed at the top of runs are made from

Pacific West Systems Supply Ltd. has formed a partnership with ROCKFON (affiliate of ROXUL®) for our shared ceilings business. Through this partnership, Pac West has the distribution rights for ROCKFON Stone Wool and Metal Ceiling Panels and ROCKFON Chicago Metallic Ceiling Suspension Systems, for British Columbia, Alberta, and Saskatchewan.

Pac West and ROCKFON are both committed to a TOTAL CEILING SYSTEM SOLUTION for all of our customer’s ceiling projects. This approach is more than just tile and more than just suspension systems. It is a combination of ROCKFON panels and Chicago Metallic suspension systems backed by extensive ROCKFON testing, research, and innovation providing a systems approach to acoustic ceilings along with a comprehensive system warranty.

For further information, please contact ceilings@pacwestsystems.com For a complete list of Pac West branch locations, visit www.pacwestsystems.com For additional information on the ROCKFON product assortment, visit www.rockfon.com

wallandceiling.ca » August / September 2014 » 11

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MAGO GOES OUTSIDE offcuts and secured through the face of the panel using trim head screws. No pilot holes are required.”

The panels below the belly band were added last, and corners were captured in custom brake-formed steel sections.

Another interesting factor about MagO Cladding is the large size of the panels: 2 x 10-foot panels have been tested and larger sizes, perhaps up to 4 x 10 feet, would be possible. Two-foot wide panels, connected to the building by clips custom manufactured by Hansen Industries of Richmond, demonstrate ultimate negative wind loads of 40 psf or the ability to withstand 220 km/hr winds.

MagO can receive any acrylic stucco pattern for a fraction of the cost of site applied stucco.

MagO is made locally in Vancouver from 4 x 8 foot and 4 x 10 foot boards of 15 mm-thick MagO board from Magnum Building Products. These boards are cut to size using carbide cutters on beam saws. The panels then have the edge profile routed in using CNC routers and in this case, diamond tooling. This allows the ability to provide custom sized panels and to make corner and window trim to suit designers’ wishes. It is an easy task to glue boards to make corners and to route shapes and patterns into the edges and faces of boards. In some cases, 20 mm boards can be used for more pronounced reveals and deeper carvings into the face.

7

NEW Introducing the MagO Cladding System MagO Cladding uses 15 mm magnesium oxide cement boards, making it strong, easy to use, and silica-free. Get on board with MagO. Call us today at 604-838-4544. Visit us online at www.magobp.com.

12 » The Trowel

Once the boards and trim have been produced on a job-by-job basis with a two to four weeks turnaround, it is time to finish them. MagO has partnered with several local companies, such as Imasco Minerals, and has tested both acrylic top coat and polymer modified base coat for direct application to MagO panels. This allows MagO to receive any acrylic stucco pattern for a fraction of the cost of site applied stucco. Also, using the PMC base coat, stamped concrete techniques can be used to provide even more custom appearances.

Cloverdale paint has formulated and approved a one-process primer and top coat that has high surface hardness while Sherwin Williams also recommends the Loxon primer that works with a wide selection of top coats. As MagO is one of the smoothest panels available, these paint finishes can provide exceptionally clean, crisp details with high gloss or matte finishes.

Drywall & Steel Framing

Contact your local branch Surrey, BC Tel: 604-513-2211

Campbell River, BC Tel: 250-286-0113

For even a greater range of appearances such as metallics, Cadillac Powder Coating can bake on polyester and epoxy resins using proprietary gravity deposition powder coat, suitable for non-conductive substrates.

Building & Mechanical Insulation

Vancouver, BC Tel: 604-430-1463

Kelowna, BC Tel: 250-765-6233

Victoria, BC Tel: 250-384-1166

Kamloops, BC Tel: 250-376-5781

Stucco & EFIS

Nanaimo, BC Tel: 250-753-3378

MagO Cladding is a four-sided shiplap system, which is a fully-faced, sealed, dry fit cladding system that does not require caulking for panel to panel or panel to corner connections. Panel or trim to window or door frames would still require sealing. This means faster installation times that are not hampered by weather concerns, and the ability to replace panels when necessary.

Acoustical

Grande Prairie, AB Red Deer, AB Tel: 780-833-7000 Tel: 403-343-1100

In addition to the engineered MagO Cladding System, MagO 8 mm panels are also finding acceptance with designers and installers alike due to their appearance, ease of working, and cost.

Fasteners & Tape

The Pitt Meadows RCMP station was the first use of these. Ratio Architects fit 8 mm panels into Fry Reglet edge trims for the walls, soffit, and buttresses.

MagO panels do not require the use of edge trims. Unlike fiber cement panels, MagO edges can be left exposed and fasteners can be countersunk, which provides a clean, smooth appearance.

And like the 15 mm panels, they can simply be cut to size using a disposable carbide blade while wearing a paper dust mask.

MagO panels come in 4 x 8 and 10 ft sizes in many thicknesses making them most suitable for most exterior cladding projects. ■

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STI Firestopping Armstrong Ceiling Products Proline Plus Spray Foam DRYVIT Products Knauf Mechanical Insulation Walls, Ceiling and Mechanical Insulation Suppliers wallandceiling.ca » August / September 2014 » 13

Tensile Cladding: Alive with

COLOUR

Photos courtesy of Birdair

Tensile Cladding Makes an Impressive Porte-Cochere at the Empire City Casino Architects and owners of Empire City Casino at Yonkers Raceway in Yonkers, New York, jumped at the chance to make a great first impression with a new porte-cochere that is made of ETFE Film (ethylene tetrafluoroethylene)—a relative of Teflon®.

14 » The Trowel

The 11,000-square-foot application was part of a $50 million expansion project.

“The entrance to any building, particularly in the entertainment industry, not only has to be inviting, it also has to be exciting,” said David Capezzuto, director of business development, for Birdair North America, supply and installation contractor for the structure. “Wherever people are going to spend their hard earned dollars, you have to meet their high expectations, and this new portecochere delivers in spades.”

Innovative Product Pays Off “At Empire City Casino, we set out to re-invent the modern casino,” said Jay Valgora, principal and founder of STUDIO V Architecture. That included, “a dramatic porte-cochere utilizing exotic structural systems and innovative materials.”

STUDIO V chose ETFE Film, for a variety of reasons including aesthetics, performance, and sustainability.

One of the most lightweight and transparent cladding materials available, ETFE is a perfect application for roofing and façade construction. In this particular application its design

was inspired by the unique landscape of the hill-top track at Yonkers Raceway and required a material that could flow as did the landscape.

The canopy was designed and engineered

by FTL Design Engineering Studio, a pioneer of tensile structure design and construction technologies. LP Ciminelli rounded out the design-build team and brought the whole project together with construction management services.

Capezzuto said ETFE is a member of the Teflon® family, which explains the material’s self-cleaning surface characteristics.

ETFE can be a single-, double- or

The result is a weather-resistant, water tight, and thermally insulating cladding for roofing or wall assembly. triple-layered application. The Empire City Casino project utilizes a twolayer application, known as a cushion system, where a pneumatic system maintains air between the layers of film that are attached in aluminum extrusions similar to a glazing system and supported by a lightweight structure.

It’s these inflated “cushions” that create the unique and dramatic entrance that the architects and owners were looking for—and guests can’t miss.

“Depending on wind and snow loads, ETFE cushions can be as large as 10 to 15 feet,” said Capezzuto. “Common length of cushions are up to 200 feet.”

Light This Way The transparency of the ETFE membrane allows daylight to flow into the space below while providing cover and shade for people as they arrive at the casino. For those who enjoy nighttime entertainment, the installation wallandceiling.ca » August / September 2014 » 15

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TENSILE CLADDING: ALIVE WITH COLOUR

Transparency allows the penetration of natural sun energy to heat the building in winter, and it offers thermal insulating properties. incorporates custom-coloured LED lighting, creating a truly energizing and exciting experience for guests. The film is UV transparent; therefore, exposure to UV won’t discolour or structurally weaken the film. In addition, due to

the inert nature of its surface, it resists adhesion of airborne pollutants, dust, dirt, and chemicals. The result is a weather-resistant, water tight, and thermally insulating cladding for roofing or wall assembly.

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Winner, Winner Had the architects wanted to either increase or decrease the transparency of the porte-cochere, Birdair’s ETFE has great solar control and shading capability. By incorporating one or more of a number of frit patterns to one or multiple layers of the film, its solar performance can be altered. Similarly, colours ranging from red to violet can be added to the film in the extrusion process, providing a consistent tint across the membrane.

The lightweight nature of the film and the structure required to support it made ETFE a very cost-effective solution for the architects and owners.

“ETFE is a very lightweight material,” said Capezzuto. “From fabrication to transport to installation, little energy is necessary. Furthermore, the entire structure from roof to the foundations can be thus optimized.”

This transparency allows the penetration of natural sun energy to heat the building in winter, and it offers thermal insulating properties.

The 100 per cent recyclable materials is constructed as per national standards like any other cladding material, and is fire-rated according to CAN/ULC S102 and S109.

Although ETFE can be used in many applications such as skylights, canopies, or a secondary facade application, its acoustical value is low.

It is not recommended as a material of choice where an acoustical barrier is necessary, nor as a primary facade, window, or railing system.

“There were so many benefits to using ETFE,” said Capezzuto, “it was really a great project for all involved.”

Teflon® is a registered trademark of E. I. Du Pont De Nemours and Company, Delaware. ■

James Hardie Reveals

2014 HardieDesign Winners Two Projects Highlighted for Leading Traditional and Modern Design

James Hardie Building Products

has announced the winners of the second annual HardieDesign Contest. Architectural firms, project developers, and owners were eligible to enter commercial and multifamily projects that demonstrated functional and aesthetic integrity of James Hardie® fiber cement siding products.

Two projects were selected—one for traditional design and the other for modern—as this year’s leading entries:

Winner in the Traditional Category: Cordogan Clark & Associates Cordogan Clark & Associates won for the traditional design of the Sugar Grove Library, located in a Chicago suburban community deeply rooted in its agrarian heritage. To create a building to blend in with the area architecture, the firm opted

wallandceiling.ca » August / September 2014 » 17

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2014 HARDIE DESIGN WINNERS

STURDY, “THE NAME SAYS IT ALL”

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NEW Sturdy Extension Plank

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18 » The Trowel

to use HardiePlank® lap siding, which offers the beauty and traditional look of wood siding while providing very nonwood like benefits—low maintenance and an unmatched resistance to weather damage in wet and humid climates, all while retaining its natural beauty. Hardie’s proprietary ColorPlus® Technology combines a professionally-developed colour palette with a multi-coat, baked-on colour application process. The project also used HardiePanel® vertical siding, HardieTrim® boards, and HardieSoffit® panels.

HardieTrim® boards create deep shadow lines and wider reveals, as well as durability in corners, columns, and windows. For projects that require pre-cut soffit panels that eliminate the need for separate box or strip vents and minimize the need for cutting, HardieSoffit® panels offer a range of precut sizes. All sizes are pre-primed, ensuring uniform coverage of sealer and primer and providing an excellent surface for paints. The soffit panels also resist fungus and mildew, even in damp climates.

Winner in the Modern Category: PSL Architects PSL Architects, out of Los Angeles, California, won for the modern look and feel of its senior living apartment complex, The Metro Hollywood, inspired by the streetscape of Hollywood Boulevard. The apartment building features Hardie® Reveal® panel system, which can be utilized to create an effective modern, durable, panelized look. The system of components is specifically developed for multifamily and light commercial construction. Beginning with a commercial grade panel developed for multi-family and light

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13 Locations Serving Vancouver Island:

commercial applications, the Hardie Reveal Panel system is a complete solution for creating a panelized look. In this application the panel system was selected for function and beauty, the varying colours and texture of the panel system creating a visually impactful design for occupants and passersby.

Judges for the 2014 HardieDesign Contest included representatives from last year’s winning firms – Erik Earnshaw, principal at BGO Architects, and Doug Heller, partner at Mullen Heller Architecture. Brad King, business manager for multifamily/commercial at James Hardie, was the third judge.

“We’re excited to announce the winners of this year’s HardieDesign contest. We had another strong year of submittals from the architect and builder community, but two stood out for their architectural inspiration and portfolio utilization,” said King. “The winning projects demonstrate how architects can create both traditional and modern designs using James Hardie products.”

Sidney 2030 Malaview Ave. W. 250-656-1125

Tofino 661 Industrial Wy. 250-725-2538

Saanichton 2048 Keating X Rd. 250-652-1130

Comox 554 Anderton Rd. 250-339-2207

Salt Spring Island 804 Fulford Ganges Rd. 250-537-4978

Cumberland 3217 Small Rd. 250-336-8710

Langford 2901 Sooke Rd. 250-478-5509

Contractor Locations Victoria West 1496 Admirals Rd. 250-388-5443

Nanaimo 4950 Jordan Ave. 250-758-8329 Lantzville 7187 Lantzville Rd. 250-390-1207

Victoria East 3934 Quadra St. 250-920-2001

Duncan 2853 Roberts Rd. 250-715-3730 Floor System Design Center 1785 Mills Rd. Sidney BC 250-656-9255

Winners receive a free video shoot to profile their project and film to be used for marketing purposes.

Photos and video of the projects can be viewed at: http:// www.jameshardiecommercial.com/hardie-design-contestwinners.shtml ■

WWW.SLEGGLUMBER.CA wallandceiling.ca » August / September 2014 » 19

around the WORLD

Contractor: Taisei Tav Sky Oryx Joint Venture, Qatar Architect: HOK, San Francisco Manufacturer: 9Wood BC Supplier for 9Wood: Cascadia Design Systems

by Laura Adams Photos courtesy of 9Wood

Doha, Qatar

is the capital city and home to 80 percent of the residents in the small Middle Eastern nation.

Despite its size, the country has considerable world influence and even hosted the 2006 Asian Games. Being able to warmly welcome its guests through its airport is very important.

For 9Wood, this project began in the spring of 2006 and consisted of a multinational design and construction team. The construction of the airport was headed up by a joint venture between Sky Oryx, a Turkish firm, and Taisei Corporation from Japan. Adding to the mix, the designers were European and American, the engineer was from Iraq, and workers

20 Âť The Trowel

around the WORLD

hailed from Southeast Asia. The wood used in the ceiling installation was specified from Australia and the ceiling was manufactured in the Western United States. Communication and co-ordination were important challenges with this project as well as procurement, distance, and cultural constraints.

The project called for a 15,000-square-foot custom panelized linear wood ceiling installation. The wood specified was eucalyptus regnans, a tropical hardwood that is only grown in Australia. Procurement was four months to get material to the United States in rough stock. Extra care was taken to ensure the wood did not get held up at any of its many stops across the world.

The product was a linear panel with a variety of wood widths up to 10 inches across. Because solid wood is less stable in wider pieces, 9Wood used glue-ups of three thinner pieces for overall constancy in the larger pieces. This required the pieces to be colour sorted to match, giving the linear members a uniform look.

The designers, subsequent to the specification of the wood, were particular to the variation of colour shown in the first design samples. In addition the Australian select grade purchased, 30 per cent more wood was ordered to control the colour. 9Wood provided sorters to go to the molding supplier to ensure proper colour control.

As the wood went through fire rating and finishing, the colour continued to shift. Design samples sent to Doha several months before had begun to patina, giving the wood a darker look than the new mock-ups sent. Because of the coastal, hot climate of Doha, 9Wood contracted the Wood Sciences Department at Oregon State University to run further tests on the wood. These tests helped to ensure that Qatar’s climate with extreme heat and change in humidity would not change the colour in a negative way.

A 9Wood company owner travelled to Doha where he drank tea and met with the subcontractor, general contractor, construction manager, and architect. While there, he hired a local representative for 9Wood. Having a local rep proved invaluable to the company because he was on hand to answer

BC Agents for: 9Wood Chicago Metallic Decoustics Fry Reglet Formglas #100 - 1614 W. 5th Ave. Vancouver, BC V6J 1N8

ph: 604.739.0966 fx: 604.739.0986

www.CascadiaDesign.ca wallandceiling.ca » August / September 2014 » 21

around the WORLD

CEILING TILE & GRID

DRYWALL INSULATION STEEL STUD - Roofing Products - Doors & Windows - Kitchen Cabinets - Flooring Products - Structural Floor Joists

WE DELIVER! 3955 QUADRA STREET PH: 250-479-7151 EXT. 201 WWW.LUMBERWORLD.NET Whether you call it drywall, gypsum wallboard or sheetrock, it’s all 100% recyclable to us.

Documentation for LEED certification is available.

e

ffecting Wher ely A eW itiv eL s o P iv

NEW WEST GYPSUM RECYCLING

W eA

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questions and gather information as the project proceeded. A separate company was hired to do all of the exporting of the finished wood panels.

Having the manufacturer and project location 10 hours apart meant that American project managers had to come to work a few hours early in order to reach the offices in Qatar before they closed for the evening. A predominantly Muslim country, Qatar’s weekend is observed Friday and Saturday.

This meant that a question emailed Thursday from would not get answered until the following Monday.

Despite the challenges, 9Wood learned a lot about working in the Middle East and provided the people of Qatar and the country’s visitors a beautiful wood ceiling that can be enjoyed for years to come.

Overall, the 6.46 million-square-foot / 600,000-squaremeter project includes a 300,000-square-foot retail gallery, a 23,000-square-foot public mosque, two 100-room, fivestar transfer hotels, a health spa, a 3,431-car parking garage, five operations centers, four central utility plants and a 742,000-square-foot flight catering facility. In conjunction with Lea+Elliott, HOK designed a 765-yard-long internal automated people mover system. Phase 1 and 2 concourses include 41 contact gates and 20 remote-stand gates.

Gypsum is a true closed-loop product, designed for your safety and to be infinitely recycled in to new drywall.

The airport opened in 2014 with an annual capacity of 30 million passengers. ■

604-534-9925 • www.nwgypsum.com

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22 » The Trowel

building SCIENCE Hempcrete Provides Exceptional Thermal and Acoustic Performance We all know that buildings account for 38 per cent of the CO2 emissions in the US and around 40 per cent of those in Canada, but how much do we know about materials that can actually reverse these emissions and clean the air around them?

engineers, the amount of timber framing can be reduced up to 30 per cent by framing at 24 inches on-center using 2x4s, in both single- and double-storey structures. This is because Hempcrete will harden and in fact help to brace the structural members.

Hemp Technologies, a North American company building hempcrete structures and advocating for better availability of the material, says hempcrete can’t be used for below grade foundations, because cellulose exposed to below ground dampness for extended periods will deteriorate. Hemp walls are, however, durable enough to withstand above ground weather conditions, although some builders prefer a lime stucco finish for aesthetic reasons.

Hempcrete actually provides its own substrate for lime plaster applications without the need for metal lathing. Unlike with cement, expansion joints are not necessary even when finishing with lime stucco. New buildings are prone to settling and cement finishes will crack; however, the lime may crack, but will reshape itself because of its crystalline shape.

Sustainable construction in practice: A new residential teaching facility (Wales Institute for Sustainable Education) under construction at the Centre for Alternative Technology. The building incorporates carbon-saving materials and technologies including ‘hemcrete’ (hemp based sprayed concrete) and 7.2mhigh rammed earth walls, making them the highest walls of this kind in Britain.

Photo courtesy of Stephen Craven.

Hempcrete is a carbon-negative material made from the hemp plant, that provides excellent insulation properties and a much lighter environmental footprint than other building materials.

Hemp walls sequester carbon and provide exceptional thermal and acoustic performance, and because they are breathable, hemp walls absorb and emit moisture, avoiding mould and creating a healthy indoor air quality.

At the moment, sourcing hempcrete is a trick, as the variety of hemp used to make it is illegal to grow in the US, but pressure on government to explore alternative and ecofriendly building materials is addressing the legislation issue.

For more information please visit hemp-technologies.com. ■

Developed by Lhoist Group, a UK-based company, Tradical Hemcrete, for instance, is a bio-composite wall construction material with high thermal insulating properties and acoustic value. It is comprised of the woody core of industrial hemp, a lime-based binder, and water mix that sequesters carbon.

It becomes carbon negative because more carbon tied up in growing and harvesting hemp than in released in producing lime. Hemcrete is also 100 per cent recyclable.

Hempcrete can be used to construct new and renovated wall, roof, ceiling, and flooring structures. Its unique unique combination of insulation and thermal inertia create buildings with stable internal environments that need very little heating or cooling, if appropriately designed and constructed.

When used for internal or exterior cladding applications, it is regarded as a non-structural, monolithic infill material, cast around the structural timber or steel frame of the structure.

Typical framing standards in North America require 2x4s at 16 inches on-center; however, with support from structural wallandceiling.ca » August / September 2014 » 23

feature FOCUS Flannery Meets Trends in Composite Siding by / Justine Shaffer Composite siding solutions are taking the market by storm and creating an endless amount of design opportunities for the construction industry. The use of composite or synthetic wood siding is greatly increasing as the benefits of the two provide a superior siding alternative. These two options are taking the construction industry to a new level due to their ease of use, aesthetic appeal, and weather resistance.

Composite or synthetic wood paneling is a hybrid material and is typically composed of all natural products designed to look and feel like real wood. These types of siding systems offer the same benefits of wood without any of its drawbacks. One of the main advantages of using composite or synthetic wood siding is the low impact it has on the environment and natural resources. Due to the concerns over our natural resources, more and more manufacturers are developing sustainable products and work practices. Naturally the construction industry saw the need for an alternative to natural wood, so composite and synthetic wood siding was developed.

Trim manufacturers are recognizing the need to keep up to date on the latest siding trends and the need to provide products to accommodate their architectural design. Flannery, Inc., a southern California manufacturer, recognized the potential in composite siding and has developed aluminum trims that are compatible with it. Flannery offers a multitude of options to assist in the design and finish of this innovative the exterior cladding. Trims will allow for the installer to slide the paneling behind a reveal flange in order to cover up the unfinished edge of the panel, thus creating a clean reveal. Flannery offers more than nine different aluminum trim profiles for the new siding with more to come as the composite siding industry continues to evolve. ■

Composites 101 Composite siding is generally resistant to weather, splitting, cracking, insects, and moisture.

—•— It can be made of various combinations of wood, fiber cement, asphalt, aluminum, hemp, cellulose, stone, or fiberboard.

—•— Because they are inspired by natural materials, composite sidings provide a diverse range of design possibilities.

—•— Fiber cement, a key ingredient in some composite siding, was patented in Austria in 1901 by Ludwig Hatschek. He called it “Eternit” based on the Latin word aeternitas, which means “ever-lasting.”

Manufacturer of Specialty Drywall and Plaster Trim

TEL (800) 765-7585 FAX (818) 837-1155 EMAIL: info@flannerytrim.com 300 Parkside Drive San Fernando, California 91340 www.flannerytrim.com 24 » The Trowel

Drywall Reveal

it’s the law Don’t Wait, Arbitrate!

HOOPP Realty Inc. v. A.G. Clark Holdings Ltd., 2014 ABCA 20, a recent Alberta Court of Appeal decision, highlights the importance of initiating arbitration within the time frame specified in a contract.

Facts Shortly after the construction of a warehouse was completed in 2000, the tenants became concerned about dust issues in relation to the concrete floor.

The tenants launched legal proceedings against the owner of the warehouse, who, in turn, commenced an action against AG Clark Holdings Ltd., the construction company who built the warehouse. This dispute resulted in a variety of collateral, but related claims that were filed between 2000 and 2012.

The construction of the warehouse took place under a Design-Build Agreement, which included a mandatory arbitration clause. This clause was subject to the limitation period expressly set forth in the provincial Limitations Act. Issues • How does the arbitration clause in a contract affect the timing for parties to bring an action?

Court Decision Madam Justice Paperny of the Alberta Court of Appeal held that the mandatory arbitration clause included in the contract required the parties to commence arbitration proceedings within the limitation period set forth

in the Limitations Act. Inasmuch as the appellant failed to do so, the right to both arbitrate and litigate was barred by this limitation.

In her reasons for judgment, Justice Paperny relied on Babcock & Wilcox Canada v. Agrium, 2005 ABCA 82, in which Justice Fruman held that unless parties have mutually agreed that arbitration is not mandatory, the arbitration clause and its associated limitation period will apply.

Furthermore, though a party may perceive manifest unfairness upon being denied recourse due to the operation of a limitation period, this argument alone will not suffice. In the words of Justice Fruman, “a limitation period always has the consequence of denying a party recourse” if the claim is not pursued within the specified time.

Accordingly, the action was dismissed and on June 26, 2014, the Supreme Court of Canada dismissed an application for leave to appeal the decision.

Lessons Learned • Examine closely what you are signing. Specifically determine if the agreement contains a clause limiting the time period within which claims must be made.

• Parties who sign an agreement with a mandatory arbitration clause have no further right to arbitrate or litigate where they knew of an issue (in this case, a constructional defect) but

WHAT ON EARTH? Does the substance in the photo look familiar? Probably not, although there’s a good chance know it better than you think. Email your best guess to jessica.kirby@pointonemedia.com for a chance to win a month's worth of digital promotion on wallandceiling. ca and our Facebook and Twitter feeds.

by / Ian Moes and Anne Cochrane Kuhn & Company

did not initiate arbitration before the limitation period had expired.

• The law with respect to limitation periods applies to an arbitration as if the arbitration were a lawsuit. ■ This article was written by Ian C. Moes, a lawyer, and Anne Cochrane, a law student, who practice in construction law with the law firm of Kuhn LLP. This article is only intended as a guide and cannot cover every situation. It is important to get legal advice for specific situations. If you have any questions or comments about this case or other construction law matters, please contact us at 604.864.8877.

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8228 Crompton Street (near S.E. Marine Drive & Knight St.) Tel 604-325-9090 • Fax 604-325-0028

wallandceiling.ca » August / September 2014 » 25

technical update Today’s Higher Performance Corner Bead Options Reduce Job Callbacks Over the years, callbacks to jobsites for wall corner repairs have been a source of much frustration among drywall contractors. These headaches can often be traced to the use of traditional, barefaced metal corner bead for corner reinforcement.

Due to its low upfront cost and familiarity, metal corner bead has long been utilized by drywall contractors as a way of keeping total installed cost down; however, the nature of the material and its application method can be problematic. The corner bead is installed by nailing or crimping to wall studs and finishing with large amounts of joint compound—or “mud.”

Unfortunately, without joint tape or a paper facing, the metal corner bead does not form a strong bond with the joint compound or wall, and in the event of foundation movement, impact or wood stud shrinkage, the metal corner bead is unlikely to resist this stress. This movement can lead to cracks in the dried joint compound along the edge of the bead or nail pops. And, with the high impact some wall corners receive, metal corner beads often suffer dents, which blemish the drywall finish.

Whatever the case, drywall corner repairs are a hassle, requiring many times more the labour expense than the initial installation. With a growing number of projects now calling for premium high-performance gypsum boards, it makes good sense to invest in more resilient new corner bead products that offer similar performance.

One method that’s become a standard practice with finishing contractors is to use special paper-faced co-polymer corner bead that is adhered with joint compound or water-activated factoryapplied adhesives rather than nails.

New Paper-faced Corner Beads There are a variety of paper-faced 26 » The Trowel

corner bead products on the market today that help produce stronger, more resilient corners. Their factory-applied paper coating serves the purpose of paper joint tape, helping to create a stronger bond between the corner bead and the wall, which prevents edge cracking.

Mud-applied Corner Bead

Adhering corner bead to gypsum board with a continuous layer of joint compound makes a very solid, straighter corner that resists the stresses of normal building movement and impact. Some of the most effective products used in this application consist of a co-polymer core laminated with paper. Though mud-applied, paper-faced metal corner beads are more common, co-polymer cores offer more impact resistance and straighter lines than metal cores— they will not dent or break. So, while mud-applied metal corner beads can certainly minimize edge cracking, the co-polymer corner beads can actually eliminate the problem. In addition, the co-polymer corner beads require only enough joint compound for adhesion and feathering edges, which saves significant installation time from fewer mud coats and faster drying time before moving onto the painting stage.

Water-activated Self-adhesive Corner Bead

These easy-to-install corner beads feature a paper-coated co-polymer core, treated with a strong water-activated adhesive that works just like the seal of an envelope. With this adhesive, the corner beads quickly form a strong bond with gypsum board and can be coated with joint compound within 30 minutes or less. Their high bond strength and robust paper-plastic-paper design provides a powerful defense against edge cracking, blistering and bubbling.

Mud-applied Flexible Corner Bead

Sometimes, a more flexible corner bead

by / Stephen Reynolds CertainTeed Gypsum

is needed to provide seamless, resilient reinforcement along more challenging angles in the wall. Flexible corner rolls typically feature a co-polymer or PVC core that conform to all inside and outside angles and create crisp, straight lines. Therefore, they are ideal for use in off-angle corners, cathedral ceilings and bulkheads. Like all mud-applied beads, they are adhered to the wall with joint compound. Because they easily adjust to all angles, flexible corner beads eliminate the need for multipleangle sticks and joints on longer runs.

Conclusion Considering their many benefits, today’s high-performance paper-faced corner beads are an ideal material choice for drywall finishing jobs. They are easier to finish than traditional metal corner beads and provide a straighter, stronger, better-looking corner. Investing in these materials is an excellent way for drywall contractors to distinguish themselves from the competition and reduce callbacks, which ultimately saves money and ensures a happier customer. ■ Stephen Reynolds is Marketing Manager, Contractor Marketing & Finishing Products – North America, for CertainTeed Gypsum. He holds an MBA from Wilfrid Laurier University of Waterloo, Ont. Beginning as a contractor, Steve has been in the building industry for more than 25 years. He can be contacted via email at stephen.reynolds@saint-gobain.com.

industry news LEED Growth in Canada Continues in Second Quarter of 2014 The Canada Green Building Council (CaGBC) has announced that the number of LEED registrations and certifications in Canada continued to grow during the second quarter of 2014, with 124 registrations and 109 certifications between April 1 and June 30, 2014. This brings the total number of LEED certified projects in Canada to 1,756.

Year to date totals by LEED certification level (up to June 30, 2014) are as follows:

• 67 LEED Certified • 85 LEED Silver • 89 LEED Gold

• 12 LEED Platinum “The second quarter of 2014 was a big one for us at the CaGBC with the launch of the LEED v4 Alternative Compliance Paths to Canadians, and the release of the first-ever major green building study in Canada,” says Mark Hutchinson, Director of Green Building Programs for CaGBC. “That momentum showed itself in our LEED registration and certification numbers for Q2.”

uses seawater from Bedford Basin and a green roof.

Place TELUS / TELUS House in Quebec City, QC, which certified LEED Gold, earned its sustainability stripes by using the shell of the existing building as a guide when retrofitting this new space to maximize energy efficiency and provide excellent indoor air quality.

LEED v4 is the latest version of the LEED green building rating system, incorporating more than a decade of experience and reflecting the latest green building knowledge, technologies and practices. The LEED v4 Alternative Compliance Paths (known as ACPs) provide equivalent means of meeting credit and prerequisite requirements of LEED v4 by referencing standards that are more familiar to Canadians.

These new ACPs were made publically

available online on June 24, along with additional tools and support for those wishing to pursue LEED v4 certification of their building project.

In order to ensure greater ease of use, the CaGBC has developed ACPs for eight sets of requirements, and will develop additional ACPs in the future as required.

The “Canada Green Building Trends: Benefits Driving the New and Retrofit Market,” report was released on June 18.

Among its highlights, the report found that the Canadian green building market is poised to see strong growth over the next three years, with surveyed Canadian firms expecting to grow their green practices from one third in 2014, to one half by 2017.

Visit the CaGBC website at www.cagbc.org. ■

Get Ready for the October / November Issue and Book Your Advertising Space Today If you’re interested in booking ad space in the next issue of The Trowel magazine contact Christina Tranberg at 1.877.755.2762 or email ctranberg@pointonemedia.com

Some of the project highlights of the second quarter of 2014 include:

Advertiser Index Company

Phone Page

The IBM Canadian Leadership Data Centre in Barrie, ON, which certified LEED Gold. IBM was able to greatly minimize power usage by deploying underfloor systems that bring the air delivery closer to the data servers in order to be cooled.

Bailey Metals Products Cascadia Design Products Coast Building Supplies Ltd. Cosella Dörken Demand Products Dryvit Systems Canada Flannery Trim Grabber Construction Products (Canada) Inc. Lumberworld Operations Ltd. MagO New West Gypsum Recycling Pacific West Systems SCAFCO Steel Stud Company Slegg Lumber Steeler Ltd (Delta BC) Sturdy Ladder Inc. Trowel Trades Accessories Ltd. Wallworks Acoustic Architectural Products Inc. Winroc Corporation

800.818.2666 OBC 604.739.0966 21 604.590.0055 25 888.4DELTA4 09 800.325.7540 23 800.263.3308 05 800.765.7585 24 800.567.8876 04 250.479.7151 22 604.290.1961 12 604.534.9925 22 604.293.1741 11 403.265.9005 IFC 250.656.1125 19 877.678.6565 08 403.264.2934 18 604.536.6100 08 877.829.2550 16 888.2.WINROC 13

The Midori Uchi project in Vancouver, BC, which certified LEED Platinum, uses solar energy to mitigate heating costs in winter, and in the summer creates more energy than the house consumes.

The BIO-Canadian Coast Guard Building in Dartmouth, NS, which certified LEED Gold, incorporated a cooling system that

wallandceiling.ca » August / September 2014 » 27

28 » The Trowel