Perlite Concrete Roof Deck Insulation

The fire safety of perlite concrete is unsurpassed by most roof insulating materials of equivalent thickness.

Perlite concrete roof deck insulation.

Perlite concrete is not subject to rot mildew or damage by water. In fact its strength increases with age. Its weight can be varied in the range of 20 to 50 pounds per cubic foot depending on the mix design selected. 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.

Insulating values of a perlite concrete roofdeck depends on the density of the concrete mix that is prepared. 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. All loose and protruding gravel must also be removed.

Typical u values range from 0 21 btu h ft 2 f 1 19 w m 2 k for a 2 inch 50 8 mm 27 lb ft 3. Finally permanence of perlite insulating concrete is another important factor. It has superior wind and fire resistance over other roof insulation materials and with the addition of polystyrene insulation board sandwiched in the perlite concrete high thermal resistance values are economically achieved. Positive drainage is easily accomplished by varying the thickness of perlite concrete or by stair stepping different thicknesses of polystyrene.

Delete 3 03 e 2 when perlite insulating concrete roof deck is designed as a diaphragm to resist horizontal forces and is installed over metal deck. It is the ideal construction aggregate filler for masonry fill insulation roof decks floor systems and other significant areas that need insulation. When used as insulation over a corrugated steel deck perlite concrete gives the system more than a 1 hour fire rating. Perlite concrete is incombustible.

This can be perlite concrete vermiculite concrete concrete made with polystyrene aggregate or cellular concrete. A good rigid insulation is insulating concrete which can be mixed and placed on the job. Perlite concrete roof deck insulation is an ideal base for built up and single ply roofing systems. Energyguard perlite roof insulation is designed to be used directly over structural roof decks.

Perlite is a versatile and sustainable mineral that is mined and processed with a negligible impact on the environment.