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

The ARMA Steep Slope Committee has established the following recommendations regarding the application of asphalt shingles 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: 1. Continuous free-flow ventilation

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