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 →Self-adhering underlayment is generally applied to the roof deck on the eaves, rakes, and valley areas of steep slope roofs and as flashing around roof penetrations. Self-adhering underlayments are installed on critical areas of the roof to minimize the likelihood of water penetrating the roofing system. In
Read more →Self-adhering bituminous membranes have been used as underlayments in steep slope (greater than 2:12) roofing for many years. When applied as an underlayment, they are primarily used to help prevent water entry from ice dams at the eave areas of shingled roofs in cold climates. When used
Read more →Asphalt shingles have been used successfully in cold climates for over one hundred years. Improved application efficiency, and more importantly, enhanced long-term shingle performance, can be achieved by following the cold weather application recommendations outlined below. Be sure to follow the manufacturer’s installation instructions carefully, as most
Read more →Introduction Asphalt shingles have been used successfully in various climate zones around the world, including desert and tropical regions, for over one hundred years. Improved application efficiency and, more importantly, enhanced long-term shingle performance can be achieved by following the recommendations outlined below for hot weather storage
Read more →