Polyisocyanurate Board Insulation R Value

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

Polyisocyanurate board insulation r value.

R 5 scored square edge rigid foam board insulation sheathing. On tuff r insulation one facer is a continuous sheet of aluminum foil. R 10 scored squared edge insulation sheathing. 1 when joints penetrations detailed appropriately.

Keep in mind that polyiso s r value increases with thickness. An insulation board made of glass fiber reinforced cellulosic felt facers bonded to a core of isocyanurate foam. Rmax thermasheath 3 1 in. All polyiso products follow astm c1289 standard specification for faced rigid polyisocyanurate thermal insulation board.

As part of that standard the products must meet r value requirements presented as long term thermal resistance lttr. 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. 1 2014 industry issue update polyiso s r value provided an overview of the theory of foam aging. Foamular 150 1 in.

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. 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. 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. 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. As foam ages over time air and blowing agents diffuse in and out of the. 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. Foamular 250 2 in.

Energyguard polyiso roof insulation. The information on this page is based on data considered to be true and accurate based on periodic internal. See also material data sheet msds 1511 or msds 1911. 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.

R 6 polyisocyanurate rigid foam insulation board. 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. R5 radiant acoustic insulation kit stc 19 5.