New Roof Shingles Over Old

Damaged decking will need to be repaired before you can install any new shingles.

New roof shingles over old.

Find a pre screened local roofing contractor. But if the current. Shingles are designed for flat surfaces. If a shingle is.

Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. Leave the old valley flashing in place and install new over it. If you need to redo your roof you might be tempted to save some money by having another layer installed over the existing shingles. Step 3 cover the old shingles.

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. In this video we provide details on how to install roof shingles over existing shingles. We discuss the nesting method which helps minimize an uneven appear. Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of.

Since the roofer is able to identify and repair high risk areas a new roof offers better quality than an old one. A new roof fixes existing issues and traps less heat than multiple layers which can cause shingles to break and curl faster. To level out an existing asphalt shingle roof rip down reduce the height of two courses of shingles as shown in the drawing below. Install a layer of roofing felt over the roof before you begin installing the new shingles.

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. Remove the ridge caps. In fact the only pro to a shingle over is it s cheaper and cleaner. How to do it remove caps.

Doing it now will make it easier to keep the reroofing job clean. They don t do a good job of bridging over gaps dips or humps including the. The felt should be secured every six inches with nails or staples. Current shingles are curling or in bad shape the new shingle roof should lay flat on your old one.

Damaged shingles should be removed to check the decking for problems. Along the rakes install a new j channel drip edge which wraps around the old rake flashing and starter courses. Use a flat pry bar. Why not add new roof shingles over old.