The Asphalt Roofing Manufacturers Association (ARMA) has established the following recommendations for applying asphalt shingles and/or asphalt-based underlayment directly over insulation, insulated roof decks, and radiant barriers. Shingle Application Directly Over Insulation Applying shingles directly over insulation is not recommended for a number of reasons. Asphalt shingles
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 →Many types of roofing permit the application of a coating for a variety of reasons, such as increasing solar reflectivity, resisting biological growth, improving impact resistance, or increasing roof life. However, ARMA strongly advises against the application of any type of field-applied coating over installed asphalt shingles.
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-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 →The proper ventilation of attic areas is a critical design and performance consideration. If implemented correctly, proper ventilation methods can help ensure the maximum service life of roof assembly materials, and can improve energy efficiency of the building. The minimum amount of ventilation required is defined by
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 backing up of frozen slush in gutters. When ice dams occur, water can be forced under
Read more →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 benefits of ventilation are: Ventilation moves heat and moisture out of an attic space. Ventilation helps to prevent premature shingle deterioration
Read more →When the time comes to reroof an existing asphalt shingle roof, a decision must be made whether to remove the old shingles or apply new shingles directly over the existing layer. Most building codes define the options as follows: Reroofing: The process of recovering or replacing an
Read more →The formation of a “tobacco-juice” residue, so named for its color, has been widely attributed to the weathering of asphalt roofing (i.e., roof coatings, base and cap sheets and shingles – to name a few) or the exudation of asphalt fractions from the roofing material, regardless of
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