Also known as flashing cement or mastic should conform to ASTM D 4586 (Asbestos Free) or ASTM D 2822 (Asbestos Containing) or CGSB 37-GP-5MA.Īsphalt Shingle: A shingle manufactured by coating a reinforcing material (felt or fibrous glass mat) with asphalt and having mineral granules on the side exposed to the weather.Īsphalt: A bituminous waterproofing agent applied to roofing materials during manufacture.ĪSTM International: A voluntary organization concerned with development of consensus standards, testing procedures and specifications.Īttic vent: An opening that allows air, heat, and water vapor to escape from the attic. Also called dimensional or laminated shingles.ĪRMA: The Asphalt Roofing Manufacturers Association, a trade association for North American manufacturers of asphalt roofing.Īsphalt Primer: A thin laiquid bitumen applied to a surface to improve the adhesion of self-adhering membranes and to absorb dust.Īsphalt Roofing Cement: An asphalt-based cement used to bond roofing materials.
The tabs on these shingles are cut to different sizes and shapes to give the roof a more three-dimensional appearance. A plastic polymer used in the modification of asphalt.Īrchitectural shingle: An asphalt shingle made up of multiple layers. Commonly described incorrectly as fungus growth.ĪPP: Atactic polypropylene. 3-tab shingle: An asphalt shingle comprised of a single layer with the exposed area separated by cut-outs into three tabs that are approximately 12 to 13 inches.Īlgae Discoloration: A type of roof discoloration caused by algae.
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