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NBK Ceramic Terrart Mid from Sound Solutions in use at Deerfield Hall, University of Toronto, Mississauga, ON. AUGUST 2016 | 17 PHOTOGRAPHY BY LISA LOGAN/COURTESY SOUND SOLUTIONS Blackman says that an excellent sequence of enve- lope elements begins on the outside with masonry cladding, then an air gap, exterior insulation, air and vapour barrier, sheathing, frame structure and inte- rior finish. He adds, though, "The components are always there, but they are often in different places." New products are also helping. One that Blackman points to is a window system from LiteZone Glass Inc. In early June, the Canada Green Building Council (CaGBC) announced that the proprietary insulating glass units (IGUs) had received the council's product of the year award for 2016. The IGUs can achieve up to R17 for a full window assembly. "That's an order of magnitude change," says Blackman. Along with the emphasis on energy performance, an interest in products that have more than one role is on the rise, according to Eric Belley, marketing pro- gram co-ordinator at Building Products of Canada Corp. "Some of our products are getting more popular as a result," he says. One example, called R-4 HP Insulsheathing, is a composite wood and polystyrene panel that provides R4 thermal insulation and structural bracing for the wall. The panels measure four- by nine-feet and are one-and-one-eighth inches thick. They are used mainly for multi-residential buildings up to three- storeys high. Building Envelope A-Squared Media.indd 1 16-06-21 11:46 AM

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