CertainTeed Flexiglas Base Sheet is designed for use as a base sheet for hot asphalt applied, inorganic built-up or modified roofing systems. It is suitable for use in the construction of various types of membranes for both new construction and reroofing, over a variety of substrates. Flexiglas Base Sheet will provide additional strength and improved handling and pliability when used as the first ply over nailable, non-nailable and insulated substrates. In addition, it will perform as a venting base sheet when spot mopped over plastic foam type insulations. Also suitable as a mid-ply in multi-layer systems.
Non-oxidized (flux) asphalt, blended with a compatible elastomeric styrene-butadiene-styrene polymer and selected inert fillers.
CertainTeed Flexiglas Base Sheet may be applied in hot asphalt or approved cold adhesives such as FlintBond. Rolls should be stored upright, off ground, completely protected from the weather. Roof decks shall be structurally sound, dry, smooth and meet or exceed minimum requirements of the deck manufacturer, local code and CertainTeed. Roof decks shall provide positive drainage.