Effects of Roof Color and Solar Reflectance on the Accumulation of Moisture in Roof Systems

Introduction: Moisture content within a roofing assembly may fluctuate significantly over the life of the roof depending on a variety of factors including, but not limited to moisture in the existing roof assembly at time of installation; interior and exterior temperatures; interior and exterior humidity conditions; deck

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ARMA Lightweight Structural Concrete Roof Decks Statement

While properly designed roof systems installed over lightweight structural concrete roof decks have performed successfully, moisture-related complications can be an issue when these roof decks are used as a roof substrate. Higher absorptive properties of aggregates typically used in lightweight structural concrete can result in an elevated

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Decking Recommendations for Built-Up Roofing and Modified Bitumen Membranes

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

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Application of Asphalt Shingles to Decks Installed over Insulation or Radiant Barriers

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

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