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R905.2.2 Slope

Residential Code 2015 of Utah > 9 Roof Assemblies > R905 Requirements for Roof Coverings > R905.2 Asphalt Shingles > R905.2.2 Slope

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Asphalt shingles shall be used only on roof slopes of two units vertical in 12 units horizontal (2:12) or greater. For roof slopes from two units vertical in 12 units horizontal (2:12) up to four units vertical in 12 units horizontal (4:12), double underlayment application is required in accordance with Section R905.1.1.

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