ORN THE ONLY SOURCE FOR PROFESSIONAL ICI ROOFING CONTRACTORS IN ONTARIO   ONTARIO ROOFING NEWS – ISSUE 1 2019  9 Distributed by with Confidence. Specify with Confidence. ASK US ABOUT OUR DELIVERIES! Roofing | Siding | Building Envelope www.roofmart.ca www.sparmarathon.ca Roofing & Sheet Metal Super Service Centres OAKVILLE, ON (905) 825-0034 WESTON, ON (Weston Road) (416) 745-4111 BARRIE, ON (705) 792-6683 EDMONTON, AB (780) 432-2786 HAMILTON, ON (905) 560-2858 PICKERING, ON (905) 426-4443 WESTON, ON (Signet Drive) (416) 744-2050 CALGARY, AB (403) 255-8236 TORONTO, ON (416) 534-8421 LONDON, ON (519) 668-3626 WINNIPEG, MB (204) 338-7613 Safety Products BY The PR 100 Guardrail System is an efficient and practical perimeter guardrail that allows you to work right to the edge of the roof. • Meets and exceeds OSHA & WCB requirements • Accommodates: parapets and cant strips • Easy to install • Provides unobstructed access to roof edge The PR 600 Mobile Fall Protection System can be moved along the roof by pulling the cart to the desired working location, providing a safe working area. The PR 600 meets O.S.H.A. compliance 1926.502D. It takes an exceptional technician to find every leak in a green roof membrane. To weed out the false positives, to isolate the exact location. ILD is renowned for its expertise on green roofs. We find breaches that others don’t, and we do the job right the first time. SAVE YOURSELF SOME GREEN. CALL ILD FIRST. THE ORIGINAL AND STILL THE BEST. Toll Free: 1.866.282.5325 info@leak-detection.com CAN YOU SPOT THE LEAK? ILD can, all of them. Currently, North American manufacturers produce various types of cover boards which can be categorized depending on the material composition as: • asphaltic-based boards, • insulation-based boards, • cement-based boards, • gypsum-based boards, • fibre-based boards, and • recycle-based boards. Due to differences in material properties, the cover board per- formance varies when incorporat- ed into a roof assembly. Some of the board types already have in- dividual standard specifications, while others do not. The existing standards differ from one another in the properties specified as well as in the minimum performance requirements. This leads to the fundamental question of what properties a cover board must Figure 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 and member consensus. have, regardless of its type, to fulfil its intended function in the roof assembly. The National Research Coun- cil of Canada (NRCC) assembled a consortium group to work with the North American roofing in- dustry to develop the require- ments for cover boards. Sixteen North American participants, listed in the acknowledgements, joined NRCC’s consortium group, including manufacturers, industry associations and con- tractor associations. The objec- tive of the project is “to develop a harmonized standard specifying the performance criteria for the use of cover boards in commercial roof- ing.” The R&D outcomes of the ex- perimental program under execution will be used for the development of the consensus-based standard. The consortium identified two types of investigations that are es- sential for cover boards: material and interface testing, outlined in Figure 2. Material testing is used to obtain the properties of the cover board, to establish its re- quirements as a standalone com- ponent, such as dimensional sta- bility and compressive strength. Interface evaluation (IE), which is the intermediate testing between material and system, is essential to assess the interaction of two or more dissimilar roofing materials, such as peel resistance and cover board pull-through resistance, shown in Figure 3. IE is essential to ensure that cover boards pro- vide protection to adjacent com- ponents in the roof assembly.