b'Climate Resilience Organization ContributorFishburn Building Sciences Group Inc. D. C. Fishburn*WSP Canada Inc. J. G. Levaque*Johns Manville M. Allaire*National Research Council of Canada B. Baskaran*EXP Inc. B. Bernard*Firestone Building ProductsY. BhowanyTremco Roofing & Building Maintenance K. Boyce*IKO Industries Ltd. G. ChristopherSoprema Inc. J. F. Ct*Ontario Ministry of Municipal Affairs and HousingM. El SemelawyGAF H. EstesCanadian Roofing Contractors AssociationT. Ferreira*EPDM Roofing Association T. Hutchinson*Roofing Contractors Association of British Columbia J. Klassen Figure 8: Example of rain requirements to be explained in the user guide for CSA A123.26 Georgia Pacific M. Kuronen* Performance Requirements for Climate Resilience of Low Slope Membrane Roofing Systems.Carlisle SynTec J. Malpezzi RCI,theSilverrequirementsCanadianconstructioncommu-National Roofing Contractors Association M. Rupar* must be fulfilled first, and thennity to prepare for and mitigate Institute for Catastrophic Loss ReductionD. Sandink anadditionalsixrequirementseffects of climate change. The first forthewindandrainmustbestandard of its kind in the world, Henry Company P. Saunders* met.Figure7presentsacaseCSA A123.26 helps remove bar-National Research Council of Canada F. Shyti*study to illustrate the use of theriers to innovation for Canadian Duro-Last Roofing R. VanWert* Climate-RCI. small and mid-size enterprises in TheCSAA123.26annexesthe construction world. The stan-SIKA Sarnafil P. Yurichprovideadditionalinformationdards holistic approach with im-for the user, and NRCC is prepar- plementablespecificationsgen-Table 1: CSA A123.26 task group membership. *IIBEC member ing a user guide to further assisteratesmeasurableoutcomesfor intheimplementationofthisstakeholders (Infrastructure Can-standard. This guide will provideada, the building enclosure indus-CSA A123.26 Framework Wind Requirements that roofs must be designed to al- detaileddrawings,suchasthetry and construction clients). Fur-TherequirementsinCSAThewindrequirementsinlow the efficient removal of water. one shown in Figure 8, as well asthermore, the standard provides A123.26 are built on top of mini- CSAA123.26aregroupedintofield photographs displaying thequality assurance metrics, and it mumrequirementsintheNa- specific requirements for the roofCSA A123.26implemented requirements. allowsCanadianstocategorize tional Building Code of Canada 11 itself and for the rooftop add-ons.Implementation Figure8providesavisualoftheirbuildingsasBronze,Sil-(NBCC);inotherwords,CSATheserequirementsaimtoin- the Silver requirement used in thever and Gold. This performance A123.26specificationsaremorecrease the resiliency of both theForeasyimplementationFigure 7 case study. The dimen- labelingsignifiesthatabuild-stringent than the NBCC require- roof and the areas where rooftopofCSAA123.26,theNRCCsions required by the standard areinghasbeendesignedtobe ments.NotethatCSAA123.26add-onsareinstalled.ThelatterlaunchedtheClimateRoofnoted, along with the appropriatemoreresilient.Buildingswith areamajorissueduringsevereCalculator on the Internet (Cli-currently provides requirements for12 mate-RCI)tool. 13 Thispubliclyelementsandtheirplacement.leak-free, resilient roofs provide wind and rain only. However, thewind events. Alongsidethedetaileddrawing,improved quality of life for Ca-task group is working on expandingRain Requirements availablewebapplicationdeter- the user guide will feature a fieldnadians and increased efficiency the standard to incorporate holisticThe rain requirements in CSAmines the climate severity for allphotograph of how this require- andproductivityfortheroof measures for temperature as well. A123.26 are divided into catego- Canadian locations listed in thement is fulfilled. and the building.Inthisconsensus-basedstan- riesforrainwaterresistanceand2015NBCCbasedoncurrent dard,theperformancerequire- rainwater control. The rainwaterand projected climate data. It alsoConclusion Referencesmentsforclimateresiliencyofresistancerequirementsensuredetermines the performance level low-slopemembraneroofsvarythatwaterinfiltrationdoesnot(Bronze, Silver or Gold) for com- TheNBCCprovidesusers1.CSAGroup.2021.Perfor-bylocationinCanada.Figure6occur.Therainwatercontrolre- mercial roofs climatic resiliencewith the minimum requirementsmanceRequirementsforClimate uses two weather events (wind andquirementsaddresshowtoac- requirements in accordance withthat must be fulfilled. As notedResilienceofLowSlopeMembrane rain) to illustrate the structure ofcountforclimatechangewhilethe CSA A123.26 standard. Thepreviously,theconsensus-based,RoofingSystems.CSAA123.26-the standard. meetingtheNBCCexpectationperformancelevelisthecombi- voluntary standard CSA A123.262021EDITIONUPDATE1. nation of a climate severity clas- goesbeyondtheminimumre- Mississauga, ON: CSA Group.sification(Normal,SevereorquirementsrequiredbyNBCC.2. Bush, E. and D. S. Lemmen. Extreme) and a ranking from theBecause it is more stringent than2019. Canadas Changing Climate Resilience Index (1, 2 or 3, with 3the code, CSA A123.26 cannot beReport. Ottawa, ON: Government being the most resilient). incorporated into NBCC. How- ofCanada.changingclimate.ca/If the performance level is de- ever,CSAA123.26iscurrentlyCCCR2019.terminedtobeSilverbythebeingreviewedforinclusionin3.Sandink,D.2020.CCCS Commercial and Residential Roofing Climate-RCI,theusershouldtheCanadianNationalMasterBuildings ModuleSurvey Results/follow the Silver requirements inSpecification,acomprehensiveOverview. Institute for Catastroph-Trinity Roofing Ltd. specializes in a variety of roofing applications and CSA A123.26. The standard out- masterspecificationusedasaicLossReduction.climatedata.waterproofing for residential, commercial and institutional buildings. lines 12 Silver requirements thatframeworkforwritingconstruc- ca/buildings-module-context.Phone: 416-630-9213URL: www.trinitycanada.commust be fulfilled for wind and 14tion specifications for projects. 14 4.RoofingIndustryCom-Fax: 416-630-1722 Email: info@trinitycanada.comforrain.IfaGoldperformanceCSA A123.26 delivers respon- mittee on Weather Issues. 2019. level is assigned by the Climate- sive and timely guidance for theWind Investigation Report: Hur-22ONTARIO ROOFING NEWSISSUE 4 2021/22 THE ONLY SOURCE FOR PROFESSIONAL ICI ROOFING CONTRACTORS IN ONTARIO ORN'