b'TECHNICAL REPORTFigure 2: Properties identified by the consortium for the development of cover board specifications. Note: The properties included in the final standard will be selected based on experimental outcome andmember consensusFigure 2 : Proprits identifies par le consortium pour le dveloppement des spcifications de panneaux de garnissage. Note : Les proprits comprises dans la norme finale seront choisies en fonction du rsultat exprimental et du consensus des membres.TheconsortiumidentifiedtwotypesofinvestigationsLeconsortiumaidentifideuxtypesdinvestigations thatareessentialforcoverboards:materialandinterfaceessentiellespourlespanneaux:lesessaisdematriaux testing, outlined in Figure 2. Material testing is used to obtainet les essais dinterface, dcritsla Figure 2. Les essais thepropertiesofthecoverboardinordertoestablishitsdematriauxsontutilisspourobtenirlespropritsdu requirements as a standalone component, such as dimensionalpanneau afin dtablir ses exigences en tant que composant stability and compressive strength. Interface evaluation (IE),autonome, telles que la stabilit dimensionnelle et la rsis-which is the intermediate testing between material and system,tancela compression. Lvaluation de linterface (EI), qui is essential to assess the interaction of two or more dissimilarestletestintermdiaireentrelematriauetlesystme, roofing materials, such as peel resistance and cover board pull- auneimportancecapitalepourvaluerlarsistanceau through resistance, shown in Figure 3. IE is essential to ensuredcollement etlarrachement comme le montre la Figure that cover boards provide protection to adjacent components3. LEI est essentielle pour protger les lments adjacents in the roof assembly. de la toiture.Membrane / Cover BoardCover Board Interface Panneau de Interfacegarnissagemembrane-panneau de garnissage Fastener Plate InterfaceAttachePeel resistanceRsistance au dcollement Pull-through resistanceRsistance au tirageFigure 3: Interface property evaluation Figure 3 : valuation des proprits de linterfaceThe cover board consortium research initiative is ongoingLinitiative de recherche du consortium est en cours et andaimstoestablishthecoverboardrequirementsinvisetablir les exigences dans les toitures commerciales. commercial roof assemblies. The knowledge obtained from theLes connaissances servirontlaborer une norme, dont la consortium research will be used to develop a standard, with apublication est prvue pour 2020. target publication date in 2020. Bas Baskaran est un chef de groupe et le Conseil national Bas Baskaran is a group leader and the National Research Council ofde recherches du Canada (CNRC) et Dominique Lefebvre est Canada (NRC) and Dominique Lefebvre is a research officer at the NRC. un agent de recherche au CNRC.26 ROOFING CANADA SPRING/SUMMER 2019'