Installation of drip edge at the eaves, gables, and rakes is a common way to help mitigate the potential rotting of wood materials that can result from water getting underneath the edge of the shingles. This can happen if water flows back onto a roof deck or
Read more →Asphalt shingles should not be installed directly on a wood deck roof substrate. Rather, the deck should first be covered by a roofing underlayment. This bulletin describes commonly available types of underlayment products, their respective industry specifications, and useful features and benefits. Always consult local building codes
Read more →Asphalt shingles are manufactured with factory-applied adhesive sealant strips to enhance wind resistance in shingle roof systems. The sealant is typically an asphalt-based adhesive that adheres shingles together after installation. This adhesive strip may be located on the front or back surface of shingles, depending on the
Read more →Ponding water is defined as water that remains on a roof for 48 hours or longer. It may result from rain, melting snow/ice, or runoff from rooftop equipment. The Asphalt Roofing Manufacturers Association is joined by other reputable organizations, such as the National Roofing Contractors Association and
Read more →The maximum slope ARMA considers suitable for normal asphalt shingle application is 21:12, or 21” per foot. The use of asphalt shingles on slopes greater than 21:12 (e.g., mansard roofs) requires special application methods because such very steep slopes reduce the effectiveness of factory-applied self-sealing adhesives, especially
Read more →What is low-slope asphalt roofing? Many commercial and industrial buildings in North America are covered with durable asphalt roofing membranes: either traditional multi-layer built-up roof assemblies (BUR) or modified bitumen roof membranes (MB), which are typically installed with two plies. Although low-slope asphalt roof membranes provide a
Read more →Snow and ice accumulation on steep-slope roofs can lead to ice dams at the roof eaves. Ice dams are typically formed by the repeated thawing and freezing of melting snow or the backing up of frozen slush in gutters. When ice dams occur, water can be forced
Read more →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
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