An insulation having an air permeance equal to or less than 0.02 L/s-m2 at 75 Pa pressure differential tested according to ASTM E2178 or E283.
Fiberglass or other compressible fibrous insulation, generally available in roll form.
|Cellular glass insulation
A rigid closed-cell insulation board made from crushed glass and hydrogen sulfide gas.
|Composite board roof insulation
Rigid board insulation generally composed of perlite, wood fiberboard, oriented strand board or plywood factory-bonded to polyisocyanurate or polystyrene.
|Exterior insulation and finish system (EIFS)
A non-load-bearing outdoor wall finish system consisting of a thermal insulation board, attachment system, reinforcement system and compatible finish.
Blanket or rigid board insulation composed of glass fibers bound together with a binder, faced or unfaced, used to insulate roofs and walls.
Any of a variety of materials designed to reduce the flow of heat from or into a building. See "thermal insulation."
A system of precut or premolded insulation boards or a poured insulation fill designed to provide slope to the roof deck before installing the roof membrane.
A material applied to reduce the flow of heat.