Polyisocyanurate Board Insulation 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. The other is a tri plex facer consisting of a three ply laminate of durable kraft. An insulation material s resistance to heat flow is rated in terms of r value a higher r value means greater insulating effectiveness i e higher resistance to heat flow.

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As much as five times lighter in weight than many other materials with the same r value.

Polyisocyanurate board insulation r value.

The r value of polyisocyanurate is the highest of all traditional roof insulation r 5 7 resulting in a thin but highly efficient roof system. As foam ages over time air and blowing agents diffuse in and out of the. 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. 1 when joints penetrations detailed appropriately.

Polyiso has a high r value per inch compared to other insulation products. 1 2014 industry issue update polyiso s r value provided an overview of the theory of foam aging. R5 radiant acoustic insulation kit stc 19 5. Polyisocyanurate insulation panels are actually one of the most thermally efficient insulation products on the market.

All polyiso products follow astm c1289 standard specification for faced rigid polyisocyanurate thermal insulation board. 2 stated thermal resistance values are based upon conditioning requirements and test methodology found in astm c1289 and astm c518 for foil faced polyisocyanurate insulation. Foamular 150 1 in. Energyguard polyiso roof insulation.

The r value test method and the long term thermal resistance lttr methodol ogy. As part of that standard the products must meet r value requirements presented as long term thermal resistance lttr. Keep in mind that polyiso s r value increases with thickness. R 6 polyisocyanurate rigid foam insulation board.

The information on this page is based on data considered to be true and accurate based on periodic internal. R 10 scored squared edge insulation sheathing. And nrca s r value recommendations associated with the use of polyisocyanurate insulation used in roof systems. R 5 scored square edge rigid foam board insulation sheathing.

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. Rmax thermasheath 3 1 in. An insulation board made of glass fiber reinforced cellulosic felt facers bonded to a core of isocyanurate foam. See also material data sheet msds 1511 or msds 1911.

Foamular 250 2 in. Polyiso is used in roof wall ceiling and specialty applications within commercial and residential buildings of all types. Astm c1289 standard change. On tuff r insulation one facer is a continuous sheet of aluminum foil.

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