Install New Roof Over Old Roof

Some roofers recommend this practice to homeowners who are planning on switching from an asphalt shingle roof.

Install new roof over old roof.

Looks just as good and lasts as long. As long as it s done right and under the right conditions installing new shingles over old ones can last as long and look just as good as a complete re roof. If you re going to add a roof on top of an old one it s a good idea to remove any loose shingles and apply a new layer of 30 pound roofing felt before laying the new shingles. Replacing a roof can be expensive but if a roof contains only a small slope it s possible to raise the roof pitch of a house by building a roof over the old one.

Has the same manufacturer s warranty. This provides a safer environment for both workers inside the building and the roofers as they install the new roof. Call for free estimates from roofing pros now. It can save you money at the time but it might actually end up costing you more in the long run.

Reroofing is the practice that involves installing a new roof over an existing one. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. Find a pre screened local roofing contractor. Installing a new roof over shingles takes less time than tearing off the old roof.

Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. March 11 2020 by safe harbor roofing. This new roof with a higher pitch can be accomplished with premade roof trusses and typical asphalt shingles. The use of roof hugger systems allows you add blanket rigid and or reflective insulation between the existing and new roofs.

Chances are your roof structure was designed for a dead load of one layer of shingles plus extra for snow and a safety margin. Before you reshingle a roof read our step by step guide for adding new shingles over old ones. 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.

By using roof huggers the existing roof can be left in place. 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.