R Value Of Perlite Roof Insulation

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.

R value of perlite roof insulation.

The higher the r value the greater the insulation performance. Know exactly how much you need with our project calculators. R value is used in the united states. Types of roof insulation.

Consists of recycled newsprint to. When determining how much insulation you need don t guesstimate calculate. Provides good dimensional stability excellent insulation value with stable r value and fire resistance. Rsi r value système international is the metric equivalent.

Low thermal insulation board. Location of r value on a product data sheet. Typical u values range from 0 21 btu h ft2 f 1 19 w m2 k for a 2 inch 50 8 mm 27 lb ft3 432 kg m3 to 0 12 btu h ft2 f 0 6 w m2 k for a 4 inch 101 6 mm thick roofdeck. R value is a measure of insulation s ability to resist heat traveling through it.

R value table for roofing materials and building insulation. Recommended home insulation r values. Insulation level are specified by r value. 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. The increase r21 r3 exactly 18 the value by which you are increasing the r value. R3 r18 r21 total roof r value. The percentage increase increase increase original number 100.

To convert rsi to r value multiply the rsi by 5 67826. R value measures how well certain building insulation materials can resist heat. To convert the r value of a specific thickness of a material to rsi divide the r value by 5 67826. 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.

Composed of expanded perlite reinforcing cellulosic fibers and selected binders. The higher the r value the better a material performs as a thermal insulator. Insulating values insulating values of a perlite concrete roofdeck depends on the density of the concrete mix that is prepared. R value is used as a measurement of the effectiveness of thermal insulating materials.

The table below shows what levels of insulation are cost effective for different climates and. The higher the r value the better the thermal performance of the insulation.