This means that if anything happens to your home during the roof replacement, you won't be held liable, and you and your home will be protected. The contractor should also double-check that none of the materials are defective and provide you with photos of your new roof. All joints in your roof should have flashing installed to prevent water seepage. If you have any other roof penetrations, like skylights or dormers, flashing should be installed around those. Essentially, the contractor will evaluate whether any areas need extensive repairs before installing the new roof and if you need new decking. It’s important to maintain straight lines as you work across the roof.
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