Since perlite is a form of natural glass it is classified as chemically inert and has a ph of approximately 7.
Perlite roof insulation weight.
The minimum recycled content is 25 by weight.
Composed of a closed cell polyisocyanurate foam core bonded in the foaming process to 1 2 thick duraboard an expanded perlite mineral aggregate board on one side and a fiber glass reinforced facer on the other.
And the green community recognizes perlite enhanced products like lightweight insulating concrete roof decks as a high performance solution drawn from a natural material of nearly unlimited supply throughout the world.
It is also widely used as a separation board over existing roofs in recover installations.
In recover applications all wet areas of the old roof must be removed.
Perlite as a non fibrous non asbestos green building material.
Its weight can be varied in the range of 20 to 50 pounds per cubic foot depending on the mix design selected.
Because of its lightweight there can be economies in the design of the structure.
Ga gafo 1 80 0 roof 4 11 energyguard perlite roof insulation description smolder if ignited.
Perlite is a versatile and sustainable mineral that is mined and processed with a negligible impact on the environment.
Rigid roof insulation board.
If ignited energyguard perlite roof insulation is a homogenous board composed of expanded perlite particles selected binders and cellulose fibers which give energyguard perlite roof insulation its insulating efficiency.
Typical physical characterictics of perlite.
Typical density is 27 lb ft3 432 kg m3.
Expanded perlite s high insulating qualities light weight and versatility make it an essential part of the construction industry for loose fill insulation and lightweight insulating concrete.
Lightweight perlite insulating concrete is light in weight ranging from about 20 40 lb ft3 320 640 kg m3 depending on the desired density and insulating value.
It s light weight provides ease of handling.
Perlite has a typical density of 3 4 pounds per cubic foot in building insulation products and is described by various industry sources as inexpensive and dimensionally stable doesn t shrink and non combustible.
Expanded perlite can be manufactured to weigh as little as 2 pounds per cubic foot 32kg m 3 making it adaptable for numerous applications.
Fesco board perlite based cover board meets the requirements of astm c 728 type 1 typical physical properties test astm fesco board strength board density pcf kg m3 min c 209 8 128 compressive strength 5 consolidation psi kpa nom c 165 30 207 laminar tensile strength psi kpa nom c 209 8 55 flexural strength psi kpa nom c 203 65 448.
