Perlite Board For Built Up Roof

Properly installed energyguard perlite roof insulation is suitable for use.

Perlite board for built up roof.

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. Perlite also changes dimensions when it becomes wet. Energyguard perlite roof insulation is available in 2 x 4 610 mm x 1 22 m and 4 x 4 1 22 m x 1 22 m boards in standard thicknesses of 3 4 1 11. When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary.

Lower installed cost than tear offs. Properly installed energyguard perlite recover board roof insulation is suitable for use under built up modified bitumen and some single ply roofing systems. Tapered fesco edge strips. Economical base for reroofing.

Bitumized perlite is an excellent material for repair of existing roofs as it can usually be applied over structurally sound roofs that have been swept clean of loose debris and coated with a cold asphalt adhesive layer. Perlite is also a fibrous insulation board that contains both inorganic and organic materials. Energyguard perlite roof insulation is designed to be used directly over structural roof decks. The minimum recycled content is 25 by weight.

Perlite is a volcanic glass that expands due to the water content in the ore the material is often processed with wood fibers and binders to produce rigid boards. The surface is treated to reduce bitumen absorption ensuring proper adhesion of roof membranes. This specification covers the composition and physical properties for perlite thermal insulation board used principally above structural roof decks and as a base for built up modified and elastomeric membrane roofing in building construction. It is also widely used as a separation board over existing roofs in recover installations.

Even though the r value of perlite is low it is often used as a component in multi layered systems or as a cover board in built up and modified bitumen membrane roof systems. 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. Fescant plus cant strips. Excellent for transitioning from membrane to nailer or transitioning from tapered fesco tapered enrgy 3 or tapered fesco foam panels to the roof level to help promote positive drainage.

Built up roofing may then be immediately applied by flood coating the surface with hot asphalt. Rigid roof insulation board. The inorganic materials are expanded silicaceous volcanic glass which is added to organic wood fibers and bonded with asphaltic binders.