New Roof Over Old Roof

That s also why building codes commonly limit re roofing to no more than two layers.

New roof over old roof.

Before you reshingle a roof read our step by step guide for adding new shingles over old ones. You can save money because there s no dump fee for removing your old roofing and there s no need for additional felt paper over the old roof. Installing new roof shingles over old effectively doubles the weight of the roofing so you have to make sure your roof structure can handle the extra load. Let s start with the good.

It can save you money at the time but it might actually end up costing you more in the long run. Roofing over your old roof can save you around 1 000 on installation costs because the roofing company won t have to remove and dispose of old shingles. Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option a properly installed layover roof can look and function as well. Many arizona homeowners with shingle roofs do decide to roof over their existing shingles because.

Why installing new shingles over old shingles can be good. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.