Shingles that are in conformance with ASTM D3462 at the time of manufacture have a proven track record of performance, meeting and exceeding customer expectations. Asphalt shingles made with fiberglass mat are complex composite products made by combining materials with significantly different properties. Shingles that are in
Read more →Homeowners may look at their newly installed roof and think, “This doesn’t look like the picture in the brochure.” In fact, variations in the appearance of asphalt shingle roofs are not uncommon, and generally occur for five reasons: color shading, back surfacing transfer, staining, visible asphalt and
Read more →Reviews the causes, prevention and correction of buckled shingles. Description Buckling is the result of asphalt shingles not laying flat due to the wrinkling of the roofing underlayment or the movement of the wood deck. Causes During the summer months we normally experience high humidity, and as
Read more →Defines the maximum slope for normal shingle application and suggests different installation methods for slopes beyond that maximum. Over the last few years, architectural design trends have resulted in radical departures from normally accepted roofing concepts. Roof slopes, especially in mansard design, have been increased to the
Read more →For many years, roof discoloration caused by algae has been observed throughout the United States and Canada. The discoloration usually has a brown to black appearance, and may be mistaken for fungus growth, soot, dirt, moss, or tree droppings. Gloeocapsa magma is probably the most prevalent of
Read more →The International Building Code (IBC) and the International Residential Building Code (IRC) require that roofing nails be utilized to fasten asphalt shingles. Proper nailing is essential to good performance. To ensure proper nailing during shingle application it is required that you follow the IBC and IRC
Read more →Introduction Photovoltaic (PV) systems convert sunlight into electricity. These systems have been successfully installed on residential asphalt shingle roofs for many years. The two common attachment methods are rack-mounted and roofintegrated: The latter method is sometimes referred to as building integrated photovoltaics. Framed rigid PV panels/modules are commonly mounted on
Read more →Recommended Practices for Controlling Asphalt Exposures during Tear-Offs of Asphalt Roofs
Read more →Recommended Practices for Controlling Asphalt Exposures during the Installation of Asphalt Products without Using Hot Liquid Asphalt
Read more →Recommended Practices for Controlling Asphalt Fume Exposures during Hot Asphalt Roofing Jobs
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