Putting A New Roof Over An Old One

You need to tear off the roof and install a new one.

Putting a new roof over an old one.

Then we ll look a lot more reasons why you might not want to do this. Current shingles are curling or in bad shape the new shingle roof should lay flat on your old one. When a home receives this classification it is illegal to install a new asphalt roof over an existing one. You re better off removing the old roof.

The answer is yes you can lay new roof shingles over old ones. Now that we ve taken care of the primary question at hand we ll consider a couple of reasons why you might want to do this. If the broken piece is lost cut a new piece to fit the existing shingle. Check your local ordinances to see whether this is even a possibility before moving forward with the project.

If a shingle is torn or cracked glue the broken piece back in place using roofing cement. By adding shingles on top of the old roof there is no opportunity to inspect the roof deck to ensure that the current wood is not wearing out. With a traditional roof replacement we completely tear off your old roof and install a shiny new one in its place. The goal is to provide a reasonably flat surface for the new shingles to lie over with no gaps greater than 1 2 inch.

Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option. So if there are already two layers the choice is made for you. Roofing over your existing roof is not always possible. Unfortunately it s not an option for everyone.

A properly installed layover roof can look and function as well. Sounds simple enough right.