Polyisocyanurate Board Insulation R Value

Rmax thermasheath 3 1 in.

Polyisocyanurate board insulation r value.

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. R5 radiant acoustic insulation kit stc 19 5. 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.

Polyiso has a high r value per inch compared to other insulation products. As much as five times lighter in weight than many other materials with the same r value. 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. Astm c1289 standard change.

Energyguard polyiso roof insulation. 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. 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. On tuff r insulation one facer is a continuous sheet of aluminum foil.

All polyiso products follow astm c1289 standard specification for faced rigid polyisocyanurate thermal insulation board. The other is a tri plex facer consisting of a three ply laminate of durable kraft. As foam ages over time air and blowing agents diffuse in and out of the. 1 2014 industry issue update polyiso s r value provided an overview of the theory of foam aging.

The r value test method and the long term thermal resistance lttr methodol ogy. R 6 polyisocyanurate rigid foam insulation board. R 10 scored squared edge insulation sheathing. Foamular 150 1 in.

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. Foamular 250 2 in. Polyisocyanurate insulation panels are actually one of the most thermally efficient insulation products on the market.

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