We are looking to have a roof replaced on a home we are in the process of buying. The house is currently on its 2nd roof..ours will make the third roof put on. The decking is 30 year 1/2" plywood not sure if its CDX but it definitely is not OSB. I had several contractors come out and give me estimates but I had one come out and tell me that I should have the decking replaced. He said that with another tear off and replacement I will have a much weaker decking and that the roof will more than likely sag. What he said made much more sense but on the other hand I had another contractor say that I may need some wood replacement but not the whole decking. Does anyone have any thoughts about this. Should the decking be replaced? After all it is a 30 year roof and this will make the 3rd roof placed on it. Keep in mind I'm not looking to spend anymore money than necessary but I would rather pay now then later.
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20 years ago