b'Research PreviewPhotovoltaic Roof Assembly TestingNew method in development by the NRCI n the spring issue of ORN, we printed two articles on roofing-related research proj- by ballast weight. This proposed test method will address both types of installation.ects being conducted by the National Research Council of Canada (NRC). OneThe NRC has partnered with a group representing various North American roofing was a study designed to quantify the effects of aging on thermal insulation materi- associations, as well as solar and roofing system manufacturers. The significance of this alsspecifically, polyisocyanurate. The other addressed energy losses from fastenerstest method will prove useful in determining the suitability of a photovoltaic roof as-on commercial roofing assemblies. sembly on a particular building in a particular location in relation to the building code.Another project in progress is the development of a CSA standard test methodThis work builds on the successful development of the CSA standard A123.21-14 for the dynamic wind pressure resistance of photovoltaic roof assemblies. This testStandard test method for the dynamic wind uplift resistance of membrane roofing systems, which method will be used to determine the wind pressure resistance of photovoltaic roof assemblies on low-slope roofs when subjected to dynamic wind loading in laboratoryis now included in the National Building Code of Canada. This standard was developed conditions. by an industry-based consortium known as the Special Interest Group for Dynamic Photovoltaic systems are typically installed on roofs using rack-mounted modulesEvaluation of Roofing Systems (SIDGERS), which began its work back in 1994.that are either fixed to a penetrating support structurewhich is attached to a buildingORN will publish a detailed article on this subject when the test method becomes a structural supportor a support structure in which the resistance to uplift is providedCSA standard.Quality products since 1913Learn more at 1-800-387-6925 or visit www.blackjackcoatings.ca.ORN THE ONLY SOURCE FOR PROFESSIONAL ICI ROOFING CONTRACTORS IN ONTARIO ONTARIO ROOFING NEWSISSUE 3 20209'