New Roof Shingles Over Old

In fact the only pro to a shingle over is it s cheaper and cleaner.

New roof shingles over old.

Current shingles are curling or in bad shape the new shingle roof should lay flat on your old one. 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. If a shingle is. Since the roofer is able to identify and repair high risk areas a new roof offers better quality than an old one.

How to do it remove caps. Damaged decking will need to be repaired before you can install any new shingles. 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.

In this video we provide details on how to install roof shingles over existing shingles. Remove the ridge caps. But if the current. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture.

Along the rakes install a new j channel drip edge which wraps around the old rake flashing and starter courses. Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of. Doing it now will make it easier to keep the reroofing job clean. Leave the old valley flashing in place and install new over it.

Is it okay to put the new shingles right over the old ones. If you need to redo your roof you might be tempted to save some money by having another layer installed over the existing shingles. Find a pre screened local roofing contractor. We discuss the nesting method which helps minimize an uneven appear.

A new roof fixes existing issues and traps less heat than multiple layers which can cause shingles to break and curl faster. Although it sounds like a good idea we can assure you the cons heavily outweigh the pros. Shingles are designed for flat surfaces. Step 3 cover the old 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. They don t do a good job of bridging over gaps dips or humps including the. Damaged shingles should be removed to check the decking for problems. Why not add new roof shingles over old.