New Roof Shingles Over Old

The felt should be secured every six inches with nails or staples.

New roof shingles over old.

Install a layer of roofing felt over the roof before you begin installing the new shingles. They don t do a good job of bridging over gaps dips or humps including the. Doing it now will make it easier to keep the reroofing job clean. When contemplating a new roof many people hope to simply do a shingle over and avoid the extra cost and mess of tearing off the existing roof and starting from scratch.

Current shingles are curling or in bad shape the new shingle roof should lay flat on your old one. A new roof fixes existing issues and traps less heat than multiple layers which can cause shingles to break and curl faster. Damaged shingles should be removed to check the decking for problems. Find a pre screened local roofing contractor.

Although it sounds like a good idea we can assure you the cons heavily outweigh the pros. Step 3 cover the old shingles. Remove the ridge caps. If a shingle is.

Leave the old valley flashing in place and install new over it. To level out an existing asphalt shingle roof rip down reduce the height of two courses of shingles as shown in the drawing below. Shingles are designed for flat surfaces. In fact the only pro to a shingle over is it s cheaper and cleaner.

If you need to redo your roof you might be tempted to save some money by having another layer installed over the existing shingles. When tearing off the old roof is a better option there are already two layers of shingles on your roof most building codes only allow two layers of any type of roofing. Since the roofer is able to identify and repair high risk areas a new roof offers better quality than an old one. We discuss the nesting method which helps minimize an uneven appear.

Damaged decking will need to be repaired before you can install any new shingles. Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. Is it okay to put the new shingles right over the old ones.

Why not add new roof shingles over old. But if the current. Construction of a new roof deck for asphalt fiberglass roofing 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. Use a flat pry bar.