Introduction The Asphalt Roofing Manufacturers Association (ARMA) recommends that the structural roof deck meet certain minimum requirements to be an acceptable substrate for the specified roofing system. Generally, all decks should be clean, dry, and securely fastened to the building structure with no abrupt level changes exceeding
Read more →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 →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 →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 →Ponding water is defined as water, which remains on a roof 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 many reputable organizations, such as the National Roofing Contractors Association, the Midwest
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 →El agua estancada puede tener consecuencias negativas importantes, independientemente del tipo de sistema de techado. El diseño, la instalación y el mantenimiento correcto de las estructuras de techado pueden evitar esta situación y sus problemas asociados. El agua estancada se define como el agua que permanece en
Read more →Las membranas autoadhesivas combinan el rendimiento comprobado de compuestos impermeables de betún modificado con una capa de betún autoadhesiva para una fácil aplicación. Las membranas de betún modificado para techado son una opción común para los techos con baja inclinación gracias a su rendimiento comprobado a largo
Read more →Las formaciones de nieve y hielo en las estructuras de techado pueden generar acumulaciones de hielo en los aleros. Las acumulaciones de hielo generalmente se forman por el congelamiento y descongelamiento constante de nieve o el estancamiento de barro congelado en los desagües. Cuando se forman acumulaciones
Read more →Por muchos años, en los Estados Unidos y en Canadá se ha observado la decoloración de techos por las algas. La decoloración generalmente tiene una apariencia entre marrón y negra, y puede confundirse con la aparición de hongos, hollín, musgo o cosas caídas de árboles. Probablemente, la
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