Roofing Shingles Over Old

Although it sounds like a good idea we can assure you the cons heavily outweigh the pros.

Roofing shingles over old.

Has the same manufacturer s warranty. You can t do it with wood or slate for example and you should never mix materials such as laying asphalt shingles over cedar shakes. All shingle manufacturers honor the warranty whether their products are used for a reroof or a new roof. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.

Looks just as good and lasts as long. Step 3 cover the old shingles. Adding new roofing over old sometimes called a re roof is possible only with asphalt shingles also called composition shingles. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.

For dimensional shingles being installed over a layer of existing dimensional shingles you should always use a 1 1 2 inch roofing nail. Install a layer of roofing felt over the roof before you begin installing the new shingles. The felt should be secured every six inches with nails or staples. Damaged shingles should be removed to check the decking for problems.

Damaged decking will need to be repaired before you can install any new shingles. 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. Manufacturers will still. Although many metal roof systems can be applied over an existing roof layovers are more commonly done with asphalt shingles.

Before you reshingle a roof read our step by step guide for adding new shingles over old ones. Choose a shingle style with the same dimensions as those on your. In fact the only pro to a shingle over is it s cheaper and cleaner. Installing a new roof over shingles takes less time than tearing off the old roof.