Reroof Over Existing Flat Roof
There are a few situations where roofing over an existing roof just isn t possible.
Reroof over existing flat roof. Make the necessary corrections to the roof framing and decking prior to beginning the new work. A properly installed layover roof can look and function as well. Because there is no tear off reroofing can go much faster and be much less expensive than a complete roof replacement. The only way to know for sure whether it will work for you is to ask a professional roofer.
Add a new layer of shingles which means that there is no tearing off of the old roof. Remove the existing roofing membrane and inspect the roof for any deficiencies. For now here are the most common reasons it might not be an option. Roofing over an existing roof is also called reroofing or an overlay.
It can only be done once so if you already have two layers of roofing in place reroofing is not an option for you. It is the process where roofers install a new roof over your existing one i e. We re happy to give you a free inspection. Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option.
Roofing over your existing roof is not always possible.