b'Technical ArticleFigure 10: After the user inputs the attachment details, fastener density per square foot or square metre is automatically calculated. A cross-Figure 8: Finalizing the attachment details. sectional diagram of the roofing system with fasteners is provided.Figure 9: Diagrams for one- and two-seam membranes on cover boards.Using the Energy-RCI Application lects their buildings location by choice of city in eithertached to the supporting structure using fastenersCanada or the United States. IWRS: A system in which the insulation is fastened to The Energy-RCI application collects data from the user and generates results with five general steps. At each step,Then, depending on the energy code and the buildingthe deck using a fastener and coated plates, and a roof the user must input or choose parameters for the construc- climatic zone location, the application will generate threemembrane is attached from above to each plate using an tion of the low-slope roof assembly, such as location, as- important indexes: Climate Zone, U-factor requirementelectromagnetic induction toolsembly type and material selection. The application usesand effective R-value requirement.Step 4: Roof Assembly Components theseinputsandadatabaseofmaterialhygrothermalStep 3: Roof Assembly Type Depending on the roof assembly type selected in Step properties, climate data and correlations derived from theThe design of the actual roof assembly begins in Step3, the user is prompted to input the roof components pa-3. The user starts by choosing the type of roofing systemrameters and their attachment details. Energy-RCI allows ERCR consortium study to calculate the thermal perfor- from the following options:the user to configure six components: membrane, cover mance of the designed roof assembly. Adhesive-applied roofing system (AARS): A system inboard, insulation, vapour barrier, deck and attachment pa- Step 1: Unit Selection which the roof membrane is bonded to the substrate us- rameters. For example, for cover board and insulation, the The user first selects the preferred units of measure, Im- ing adhesives, and all other components below the roofuser can input the specific thickness within the bounds perial or metric, for the data input and results.membrane are attached with adhesives of thicknesses tested by the ERCR study. Furthermore, in Step 2: Code and Building Location SelectionsMARS: A system in which the roof membrane is inter- the insulation configuration, the number of layers (up toTheuserthenassignsaprojectnameandselectsmittently attached to the deck using fasteners three) and the dimension of the boards (as this pertains to theenergycode(NECB, 3 ASHRAE90.1-2016 1 or PARS: A system in which the roof membrane is bondedfastener layout) can be selected. ASHRAE-2019 2 ) with the thermal requirements that theyto the substrate using adhesives, and a minimum of oneTheattachmentdetailscontainpredefinedfieldsfor want the roof assembly design to meet. The user also se- componentbelowthemembraneisintermittentlyat- users to select the fastener type and fastener layout for 22ONTARIO ROOFING NEWSISSUE 1 2022 THE ONLY SOURCE FOR PROFESSIONAL ICI ROOFING CONTRACTORS IN ONTARIO ORN'