Roof inspection revealed rotten wood, buckled shingles, and three layers of shingles!!
Roof inspection revealed rotten wood, buckled shingles, and three layers of shingles!!
Rotten wood is the leading cause of the shingles sinking downward.
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.