New Roof Shingles Over Old

If a shingle is.

New roof shingles over old.

Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. A new roof fixes existing issues and traps less heat than multiple layers which can cause shingles to break and curl faster. 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. Although it sounds like a good idea we can assure you the cons heavily outweigh the pros.

Why not add new roof shingles over old. In fact the only pro to a shingle over is it s cheaper and cleaner. 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.

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. We discuss the nesting method which helps minimize an uneven appear. But if the current.

Use a flat pry bar. Since the roofer is able to identify and repair high risk areas a new roof offers better quality than an old one. They don t do a good job of bridging over gaps dips or humps including the. Is it okay to put the new shingles right over the old ones.

How to do it remove caps. Doing it now will make it easier to keep the reroofing job clean. Find a pre screened local roofing contractor. In this video we provide details on how to install roof shingles over existing shingles.

Step 3 cover the old shingles. If you need to redo your roof you might be tempted to save some money by having another layer installed over the existing shingles. Along the rakes install a new j channel drip edge which wraps around the old rake flashing and starter courses. 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. Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of. Damaged decking will need to be repaired before you can install any new shingles. Shingles are designed for flat surfaces.