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Edge of roof rotten

1999 Views 2 Replies 3 Participants Last post by  VaViaCo
The 12 year old roof on my garage is kaput, mostly sun damage on the west exposure and I discovered that their was no first course laid and as a result the first few inches of the OSB are like bad cheese. Can I cut up 16" or so from the edge and just replace this piece or do I have to pull off the full sheets and replace ?
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I feel that anything less than 24 inches wide leads to problems with dimensional stability, so go at least 2 feet up with the wood decking replacement.

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