AUTOMNE/HIVER 2018 COUVERTURES CANADA 15 PRIX COUVERTURES CANADA 2018 giving the subway hub a distinctly modern appearance. “You don't come across free-form roofs like this every day,” says Trevor McGrath, estimating manager with Bothwell Accurate. “Usually, you can measure off a drawing and determine how much perimeter fascia or insulation you'll need up front, but it wasn't that cut and dried with this building. We needed to work with people who had done this type of curved roof before and who understood what needed to be done.” Bothwell Accurate recruited Radius Track Corporation (RTC) and Soprema to its team, as well as U.K.-based Kalzip, a roofing manufacturing firm that had experience with roofs of this nature overseas and could supply the custom- made standing seam roofing needed for the project. Long-distance collaboration Once the steel deck was installed, the company began its work with a full 3D scan of the roof to locate the roof deck and assess its as-built condition. These drawings were shared and discussed with the partners, including Kalzip's designers who worked remotely from England. “This process pinpointed areas where the red-iron structure was not able to maintain tolerance due to the complex geometric design,” explains McGrath. “To bridge the gap from roof deck to smooth finished metal roof, BA (Bothwell Accurate) engaged RTC to design, engineer and fabricate a light-gauge framing system using the 3D scan and other project documents and information.” bpcan.com C O N Ç U E N P R É V I S I O N D E S A S S A U T S C L I M A T I Q U E D U X X I E S I È C L E A N T I C I P A T I N G C A N A D I A N W E A T H E R F O R T H E 2 1 S T C E N T U R Y Zone de clouage Tracknail 1 ½ po Tracknail 1 ½ inch Nailing Zone Zone de clouage Tracknail 1 ½ po Tracknail 1 ½ po Tracknail Tracknail 1 ½ inch Nailing Zone GRIS LUNAIRE TWILIGHT GREY BRUN AUTOMNAL AUTUMN BROWN NOIR CÉLESTE SHADOW BLACK GRIS ARGENTÉ SILVER GREY GALET WEATHERED ROCK Toiture qui dure plus longtemps Longer-Lasting Roof Toiture qui dure plus longtemps Longer-Lasting Roof Meilleure rétention des granules Higher Granule Retention Meilleure rétention des granules Higher Granule Retention Plus grande proportion de SBS Greater SBS Content RÉSISTANCE AUX IMPACTS • UL 2218 CLASSE 4 Les bardeaux Vangard 42 IR peuvent subir un choc violent sans craindre la formation de fissures, ce qui risquerait autrement de provoquer des infiltrations d’eau. UL 2218 CLASS 4 • IMPACT-RESISTANT Vangard 42 IR shingles can be hit, hard, without causing any fissures or cracks that lead to water infiltration.