Perlite as a non fibrous non asbestos green building material.
Perlite roof insulation weight.
A built up roof for example will typically include the built up membrane itself with or without gravel as well as some kind of insulation and cover board which will vary in thickness from roof to roof.
It is also widely used as a separation board over existing roofs in recover installations.
Typical physical characterictics of perlite.
The minimum recycled content is 25 by weight.
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.
Typical density is 27 lb ft3 432 kg m3.
It is the ideal construction aggregate filler for masonry fill insulation roof decks floor systems and other significant areas that need insulation.
Expanded perlite can be manufactured to weigh as little as 2 pounds per cubic foot 32kg m 3 making it adaptable for numerous applications.
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.
Because of its lightweight there can be economies in the design of the structure.
Since perlite is a form of natural glass it is classified as chemically inert and has a ph of approximately 7.
Ga gafo 1 80 0 roof 4 11 energyguard perlite roof insulation description smolder if ignited.
Energyguard perlite roof insulation is designed to be used directly over structural roof decks.
It s light weight provides ease of handling.
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.
Perlite is a versatile and sustainable mineral that is mined and processed with a negligible impact on the environment.
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.
In recover applications all wet areas of the old roof must be removed.
Rigid roof insulation board.
