Perlite as a non fibrous non asbestos green building material.
Perlite roof insulation weight.
It is also widely used as a separation board over existing roofs in recover installations.
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.
Expanded perlite can be manufactured to weigh as little as 2 pounds per cubic foot 32kg m 3 making it adaptable for numerous applications.
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 is the ideal construction aggregate filler for masonry fill insulation roof decks floor systems and other significant areas that need insulation.
Perlite is a versatile and sustainable mineral that is mined and processed with a negligible impact on the environment.
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.
Rigid roof insulation board.
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.
Typical physical characterictics of perlite.
When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary.
Typical density is 27 lb ft3 432 kg m3.
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.
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.
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.
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.
The minimum recycled content is 25 by weight.
Energyguard perlite roof insulation is designed to be used directly over structural roof decks.
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.
