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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