Introduction The application of any roofing system during cold weather poses special challenges. Specific to modified bitumen materials, these challenges can include maintaining proper sheet material, adhesive, and asphalt temperatures at the point of application. Cold temperatures may stiffen sheet materials, reduce the curing or flash-off rate
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 →Self-adhesive (SA) modified bituminous membranes provide an effective finished roof when properly installed. These systems combine the long-term, proven performance of modified bitumen sheet materials with installation advantages imparted by a self-adhesive bituminous layer. Product Description, Manufacturing Process and Governing Standards Self-adhesive modified bituminous membranes are comprised
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 →Built-Up Roofing (BUR) membranes have been in use in North America for more than 100 years. BUR systems predominately consist of alternating layers of asphalt (bitumen) and fiberglass ply felts that create a very durable water-resistant membrane. The number of plies within a cross-section of the system
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
Read more →Introduction The application of any type of bituminous roofing system in cold weather poses special challenges. Specific to built-up roofing systems, these challenges can include maintaining the proper asphalt temperature at the point of application, slower cure time of cold-applied adhesives, and increased stiffness of roofing materials.
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