- 1Shingles sinking down
Rotten wood is the leading cause of the shingles sinking downward.
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- 3Buckled Wood under shingles
As the wood increases in moisture content, it can cause movement of the decking. As the new roof is installed, moisture is trapped in the system, and roofing felt used as underlayment can absorb humidity and wrinkle.
Go To Pin - 4Shingles are holding waterGo To Pin