The International Building Code (IBC) and the International Residential 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 shingle manufacturer’s instructions and also
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 →What is asphalt shingle recycling? It is becoming increasingly common for shingles to be recycled instead of going to a landfill. Shingle recycling is the process of taking asphalt shingles from roof tear-offs and reusing them in other products, ensuring the material does not end up 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 →Homeowners may look at their newly installed roof and think that the shingle color does not 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,
Read more →Description Buckling of asphalt shingles can occur in new roofs or reroofing, and is most often the result of wrinkles in the roofing underlayment or movement of the wood decking. Moisture-induced deck effects typically show a pattern of shingle distortions coincidental with joints in the roof deck
Read more →Introduction Asphalt shingles have been successfully used in various climate zones around the world, including in desert and tropical regions, for over one hundred years. Improved application efficiency and enhanced long-term shingle performance can be achieved by following the recommendations outlined below for hot weather storage and
Read more →When the time comes to reroof a building with an existing asphalt shingle roof, a decision must be made whether to remove the old shingles or apply new shingles on top of the existing layer. Most building codes define the options as follows: Reroofing: The process of
Read more →The 2021 International Residential Code defines an attic as “the unfinished space between the ceiling assembly and the roof assembly.” Attics generally fall into one of three configurations. The most common places insulation on top of the ceiling of the underlying rooms, resulting in an unconditioned space
Read more →Attic ventilation is:Attic ventilation is the flow of outside air through the space at the underside of the deck of an asphalt shingle roof system. The proper ventilation of this space is a critical design and performance consideration. The benefits of proper ventilation include:Ventilation moves heat out
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