Re Roofing A House Over Existing Shingles

When roofing over your existing shingles can be a good idea.

Re roofing a house over existing shingles.

This will help keep any moisture from getting under the felt. Reroofing is the process of layering one set of new shingles over a set of existing shingles. Nailing new shingles over existing ones is less expensive and faster requiring less labor but it also means you lose the chance to assess the sheathing for signs of water damage. The quick answer is yes you can re roof architectural shingles over existing architectural shingles however you must check with the shingle manufacturer as well.

All shingle manufacturers honor the warranty whether their products are used for a reroof or a new roof. It can only be done once so if you already have two layers of roofing in place reroofing is not an option for you. Why installing new shingles over old shingles can be good. If the job is done correctly with the new layer of shingles laid flat over the existing shingles the old roof cushions the new one and serves as a secondary barrier should wind or water ever break through the new shingles.

Many arizona homeowners with shingle roofs do decide to roof over their existing shingles because. Watch for damaged or un sound roof decking. If a shingle is. The felt should be secured every six inches with nails or staples.

Adding new roofing over old sometimes called a re roof is possible only with asphalt shingles also called composition shingles. Remove the ridge caps. Doing it now will make it easier to keep the reroofing job clean. Having said that it will be nearly impossible to get a good looking quality installation.

How to do it remove caps. Let s start with the good. Investigate strip shingles entirely and replace roof sheathing as needed. The layers of felt should be overlapped by 1 inch as you work toward the roof ridge.

Prep work for re roofing over asphalt shingles inspect the condition of the existing roof and roof deck for numer of roof layers soundness of roof decking smoothness. Use a flat pry bar. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. But before we get started one thing must be clear.

Because there is no tear off reroofing can go much faster and be much less expensive than a complete roof replacement. 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. Install a layer of roofing felt over the roof before you begin installing the new shingles.