Perlite Roof Insulation R Value

Provides good dimensional stability excellent insulation value with stable r value and fire resistance.

Perlite roof insulation r value.

Consists of recycled newsprint to. R value is used in the united states. For example two inches of extruded polystyrene with an r value of 11 has an rsi of 1. To convert rsi to r value multiply the rsi by 5 67826.

To convert the r value of a specific thickness of a material to rsi divide the r value by 5 67826. Perlite roof insulation description energyguard perlite roof insulation is a homogeneous board composed of expanded perlite particles selected binders and cellulose fibers which give energyguard perlite roof insulation its insulating efficiency. Composed of expanded perlite reinforcing cellulosic fibers and selected binders. Rsi r value système international is the metric equivalent.

The r value of the insulating concrete depends on its unit weight and thickness. Perlite roof insulation code compliance thermal performance 1 thickness nominal r value resistance inches mm hr ft 2 f btu m c w 3 4 19 1 2 0 0 35 1 25 4 2 7 0 48 1 1 2 38 1 4 1 0 72 2 51 5 4 0 95 3 76 8 1 1 47 for use over metal decks the minimum thickness of energyguard perlite insulation over metal decks is as follows. Low thermal insulation board. Factory cut taper that is easy to install and cut builds slope into an otherwise flat roofing system allowing water to drain freely off the roof.