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Can you put three layers of shingles on a roof?

Liam Martinez | 2023-06-01 10:46:01 | page views：1434
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Benjamin Hayes

Works at Google, Lives in Mountain View. Holds a degree in Computer Science from Stanford University.
Most building codes allow two layers of organic or fiberglass asphalt shingles on roofs with a 4/12 pitch or less, and three layers on steeper roofs. If the structure can support the added weight, a typical 20-square (2,000-square-foot) reroof will cost at least $1,000 less than a tear-off job.
2023-06-03 10:46:01
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Noah Lee

QuesHub.com delivers expert answers and knowledge to you.
Most building codes allow two layers of organic or fiberglass asphalt shingles on roofs with a 4/12 pitch or less, and three layers on steeper roofs. If the structure can support the added weight, a typical 20-square (2,000-square-foot) reroof will cost at least $1,000 less than a tear-off job.
Reroofing Over Asphalt Shingles - HomeAdvisor Pro
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