Polyiso Foam Board R Value

Cost polyiso is the most expensive of the foam board insulation products however it s the highest r value. It provides an r value of 6 per inch of thickness and often comes foil faced to help reflect radiant heat. The r value test method and the long term thermal resistance lttr methodol ogy.

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The other is a tri plex facer consisting of a three ply laminate of durable kraft.

Polyiso foam board r value.

Polyiso is unique in that the r value increases with the thickness of the foam so three inches of polyiso has a higher r value per inch than two inches. On tuff r insulation one facer is a continuous sheet of aluminum foil. Polyiso is used in roof wall ceiling and specialty applications within commercial and residential buildings of all types. 1 2014 industry issue update polyiso s r value provided an overview of the theory of foam aging.

Polyisocyanurate polyiso is a closed cell rigid foam insulation board made with recycled content that is widely used in commercial roofing. R 3 2 polyisocyanurate rigid foam insulation board r matte plus 3 thermasheath 3 is rigid foam r matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation board. Polyiso has a high r value per inch compared to other insulation products. And nrca s r value recommendations associated with the use of polyisocyanurate insulation used in roof systems.

Polyurethane and polyisocyanurate are both closed cell foams. R value chart for enerfoil tm rigid foam faced insulation conditioned per atsm c1289 test method astm c518 1 2. R panel is manufactured with a closed cell polyisocyanurate foam core bonded to fiberglass reinforced facers and designed for use over metal nailable and non nailable roof decks with a variety of membrane systems. Polyiso comes in several thicknesses and is used over house sheathing underneath siding or in attic spaces where its reflective properties are.

Let s use the r value of iko s polyiso insulation enerfoil tm as an example. It s made of environmentally sound closed cell polyisocyanurate foam bonded to a durable white matte non glare aluminum facer and a reflective reinforced aluminum facer. This is an even more dense and more expensive foam board insulation. What is polyiso insulation.

Polyisocyanurate polyiso is a closed cell rigid foam board insulation that is bonded to facers on both sides which are composed of various organic and inorganic materials. Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency. Rmax r matte plus 3 1 2 in. Polyiso insulation is the best choice as a cost effective energy efficient and environmentally responsible insulation product.

Tuff r polyisocyanurate insulation consists of high performance high r value closed cell polyisocyanurate foam core boards sandwiched between a choice of durable exterior foil facers. They contain low conductivity gases in the cells usually one of the hcfc or cfc gases.

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