Perlite Roof Insulation R Value

This also means easy hoisting staging and maneuvering around the roof.

Perlite roof insulation r value.

R value is used in the united states. The bag in which the perlite or vermiculite is purchased recommends the mix proportions needed to achieve various unit weights of fresh concrete and oven dry concrete. The r value of the insulating concrete depends on its unit weight and thickness. To convert the r value of a specific thickness of a material to rsi divide the r value by 5 67826.

Low thermal insulation board. Rsi r value système international is the metric equivalent. Provides significantly more thermal insulation r value than wood fiber or gypsum boards. 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.

The surface is treated to reduce bitumen absorption assuring proper adhesion of roof membranes. Protector hd allows easy efficient scoring cutting and snapping which permits fast tight fabrication and all in a low dust environment. 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.

Composed of expanded perlite reinforcing cellulosic fibers and selected binders. High r value 2 5 r.