Asphalt Roll Roofing
In essence, roll roofing refers to asphalt roofing products that are manufactured in roll form, and are either smooth- or mineral-surfaced. They are used in addition to asphalt shingles for residential roofing applications, most often as underlayments and flashings. The range of basic types of roll roofing materials include: 1) Smooth Surfaced Roll Roofing: these are called "coated felt", referring to a type that is smooth-surfaced roll roofing that is covered with ground talc or mica. These types of roll roofing products are often used as flashing to seal the roof at intersections and protrusions, and to provide extra deck protection at the roof’s eaves and valleys. 2) Saturated Felt: Saturated felt is asphalt-impregnated, organic-based felt used as an underlayment between the roof deck and the roofing material. 3) Specialty-Eaves Flashings: This is a polymer-modified bituminous sheet material for special flashing applications along roof eaves and other areas. 4) Mineral-Surfaced Roll Roofing: These are most often used as a primary roof covering, on small or secondary-use buildings, with the top external layer of the roll having been imbedded with mineral granules.
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