Polyisocyanurate, also referred to as PIR, polyiso, or ISO, is a thermoset plastic typically produced as a foam and used as rigid thermal insulation. Polyiso Insulation board is made of glass fiber-reinforced cellulosic felt facers bonded to a core of isocyanurate foam.
Polyiso is unique in that the polyiso insulation R-value increases with the thickness of the foam, so three inches of polyiso has a higher R-value per inch than two inches.
Light weight –– Lighter than most other roofing insulating products offering comparable thermal resistance; as much as five times lighter in weight than many other materials with the same R-value.
Low water permeability –– lower overall perm rating than many conventional insulation boards.
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Uses for PolyIso Insulation Board
Polyiso Roof Insulation is designed for use over structural roof decks where R-values of 5.7 or higher are required, along with comprehensive UL and FMRC approvals.
When properly installed, it is suitable for use under built-up, modified bitumen, and most single-ply roofing systems.
Advantages of PolyIso Insulation Board
High insulation value –– Excellent “LTTR” value compared to any other FM Class I rated products of equivalent thickness.
EPA compliant blowing agents containing no CFCs or HCFC; has zero ozone depletion potential and virtually no global warming potential. Excellent dimensional stability. High moisture resistance and no capillarity; is stable and maintains its physical and insulating characteristics.
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Whether it’s a kitchen or bath remodel, room addition, new roof, deck or whatever, the right financing can be just as important as your home improvement project itself.
RJ Construction now offers financing for your next home renovation project. Apply today to learn more about our financing options.
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RJ Construction has been serving the DFW Metroplex and the surrounding areas including Dallas, Fort Worth, Arlington, Richardson and Plano since 2007. In 2018, we began to offer our highly experienced roofers in the Kansas City Metroplex, including the surrounding areas of Lenexa, Olathe, Bonner Springs, and beyond. Your satisfaction is our goal, and we thank you for trusting RJ and #TeamRJ with your home improvement project!
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