b'CLIMATE RESILIENCY REQUIREMENTSResiliency road map How to determine the Canadian Climate Resiliency Requirements for asphalt shingle roofingBy/par Zahra Jandaghian & Bas BaskaranUne feuille de route de la rsilience Comment dterminer les exigences canadiennes de rsilience aux changements climatiques pour les toitures de bardeaux dasphalteT he steep slope residential roofing market amounts toL e march des couvertures rsidentiellesforte pente more than 30 per cent of the total roofing business.reprsente plus de 30 % des toitures. Au Canada, on Asphaltshinglesareusedonalmost90percentofutilise des bardeaux dasphalte sur prs de 90 % des Canadian residential roofs because of their affordability, easetoits rsidentiels en raison de leur prix abordable, de leur faci-of installation and adaptability. However, the performance oflit dinstallation et de leur capacit dadaptation. Toutefois, Canadian residential roofs is threatened by the frequency andla performance est menace par la frquence et la dure des duration of recent occurrences of extreme weather events (e.g.,vnements mtorologiques extrmes (ouragans, incendies hurricanes, wildfires, floods, tornados, heat waves, etc.)de fort, inondations, tornades, vagues de chaleur, etc.) A national survey of over 1,000 homeowners confirmedUne enqute nationale auprs de plus de 1000 propri-that the majority of the asphalt shingles were replaced and/ taires a confirm que la plupart des bardeaux dasphalte ont orrepairedmuchsoonerthantheirexpectedservicelife.t remplacs ou rpars beaucoup plus tt que leur dure Hence, there is urgency in the harmonization effect due tode vie utile prvue. Il est donc urgent daccrotre la rsilience code specification, as part of the National Research Council ofet la durabilit des toitures de bardeaux dasphalte.Canada (NRC) climate change adaptation initiative to increase the resiliency and durability performance of asphalt shingleContexteroofing (ASR) in Canada. The main intent is to propose aLescouverturesrsidentiellesutilisentdesmatriaux holistic approach by integrating load specification, resistancediffrents comme le mtal, les tuiles et les bardeaux. Les evaluation and quality installation. bardeauxdasphaltesontutilisssurprsde90%des toits rsidentiels canadiens. Une couverture rsidentielle se Background compose de quatre lments: des bardeaux dasphalte, la Residential roofs utilize different material coverings, such assous-couche, un grenier isol et des panneaux de revte-metal, tile and shingles. Asphalt shingles are used on almostment en bois (Figure 1). De plus, des accessoires tels que 90 per cent of Canadian residential roofs. A residential roofles vents, le produit dtanchit, les clous et la protection iscomposedoffourmajorcomponents:asphaltshingle,davant-toit font galement partie de la couverture. underlayment, insulated attic and wood sheathing (Figure 1). In addition, accessories such as vents, sealant, nails and eave protection are also part of the ASR. Figure 1. Composants typiques des couvertures en bardeaux dasphalte (CBA)Une enqute a confirm que la plupart des CBA rempla-Figure 1. Typical components of Canadian Asphalt Shingle Roofing (ASR) cesourparesavantleurduredevieutileprvue. 40 ROOFING CANADA SPRING/SUMMER 2021'