Polyisocyanurate Board Insulation R Value

Rmax thermasheath 3 1 in.
Polyisocyanurate board insulation r value. The information on this page is based on data considered to be true and accurate based on periodic internal. An insulation board made of glass fiber reinforced cellulosic felt facers bonded to a core of isocyanurate foam. 1 2014 industry issue update polyiso s r value provided an overview of the theory of foam aging. 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.
Polyiso has a high r value per inch compared to other insulation products. Keep in mind that polyiso s r value increases with thickness. As part of that standard the products must meet r value requirements presented as long term thermal resistance lttr. The other is a tri plex facer consisting of a three ply laminate of durable kraft.
Astm c1289 standard change. And nrca s r value recommendations associated with the use of polyisocyanurate insulation used in roof systems. On tuff r insulation one facer is a continuous sheet of aluminum foil. The r value test method and the long term thermal resistance lttr methodol ogy.
As much as five times lighter in weight than many other materials with the same 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. 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. All polyiso products follow astm c1289 standard specification for faced rigid polyisocyanurate thermal insulation board.
Energyguard polyiso roof insulation. 1 when joints penetrations detailed appropriately. 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. Foamular 150 1 in.
Polyiso is used in roof wall ceiling and specialty applications within commercial and residential buildings of all types. R 6 polyisocyanurate rigid foam insulation board. Foamular 250 2 in. R5 radiant acoustic insulation kit stc 19 5.
See also material data sheet msds 1511 or msds 1911. R 10 scored squared edge insulation sheathing. R 5 scored square edge rigid foam board insulation sheathing. As foam ages over time air and blowing agents diffuse in and out of the.