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I am about to put a new roof on my house. It has about 3 layers which I will be stripping off. The sheathing under the shingles is about 8 inches wide. There are gaps between the sheathing of between 3/4″ to 1 1/2″. My question is should I put plywood over the sheathing or just fill in the gaps with strips of roofers? Or does anyone have any other ideas?
I’ve heard that if I put plywood up, I have to be careful about venting because plywood can restrict air flow. Any opinions?
Thanks, Clayt Westland
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Clayton, If the original sheathing is sound, and well nailed, I would reshingle over it. Adding plywood would be unnecessary. I would assume that the original shingles (composition?) had the necessary nailing, so I would assume that comparable sized shingles would be the same.
You can lay out the nail lines first, to double check and fill in as necessary.
Even without plywood, I would consider a ridge vent. Composition shingle can heat up considerably and having some airflow under the sheathing can help extend the roof's lifetime.
walk good
david
*Fill in the gaos and add the vent. Good Luck
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I am about to put a new roof on my house. It has about 3 layers which I will be stripping off. The sheathing under the shingles is about 8 inches wide. There are gaps between the sheathing of between 3/4" to 1 1/2". My question is should I put plywood over the sheathing or just fill in the gaps with strips of roofers? Or does anyone have any other ideas?
I've heard that if I put plywood up, I have to be careful about venting because plywood can restrict air flow. Any opinions?
Thanks, Clayt Westland