I have a roof that is about 5-10yrs past it's prime and will be in the market to have it replaced in a few years. Now the roof started off as cedar shakes then there are 2 layers of shingles. Do I have to remove the whole roof a lay down new sheeting then the paper and shingles or can I remove 1 or 2 layers of shingles and lay down the paper and shingles over the shakes?
Thanks
Thanks
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