Polyisocyanurate Board Insulation R Value

The information on this page is based on data considered to be true and accurate based on periodic internal.

Polyisocyanurate board insulation r value.

R 5 scored square edge rigid foam board insulation sheathing. Keep in mind that polyiso s r value increases with thickness. All polyiso products follow astm c1289 standard specification for faced rigid polyisocyanurate thermal insulation board. Polyiso has a high r value per inch compared to other insulation products.

Astm c1289 standard change. As foam ages over time air and blowing agents diffuse in and out of the. R 10 scored squared edge insulation sheathing. R5 radiant acoustic insulation kit stc 19 5.

And nrca s r value recommendations associated with the use of polyisocyanurate insulation used in roof systems. Polyisocyanurate insulation panels are actually one of the most thermally efficient insulation products on the market. 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. See also material data sheet msds 1511 or msds 1911.

Polyiso is used in roof wall ceiling and specialty applications within commercial and residential buildings of all types. 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. 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. The r value test method and the long term thermal resistance lttr methodol ogy.

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. Foamular 250 2 in. An insulation board made of glass fiber reinforced cellulosic felt facers bonded to a core of isocyanurate foam. Foamular 150 1 in.

1 2014 industry issue update polyiso s r value provided an overview of the theory of foam aging. 1 when joints penetrations detailed appropriately. As part of that standard the products must meet r value requirements presented as long term thermal resistance lttr. 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.

Energyguard polyiso roof insulation. 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 much as five times lighter in weight than many other materials with the same r value. R 6 polyisocyanurate rigid foam insulation board.