Put Shingles Over Old Roof

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

Put shingles over old roof.

If you need to redo your roof you might be tempted to save some money by having another layer installed over the existing shingles. Why not add new roof shingles over old. Hope you like it. In this video we provide details on how to install roof shingles over existing shingles.

Over the years we ve seen problems caused by shingle overs. Here is a video on how we lay a second layer of asphalt shingles over existing asphalt shingles. The felt should be secured every six inches with nails or staples. Because asphalt shingles are routinely exposed 5 in rip down the first strip the starter course so that it is 5 in.

Remove the ridge caps. Doing it now will make it easier to keep the reroofing job clean. Does it cost more to tear off. Has the same manufacturer s warranty.

Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of. We don t recommend them nor do we do them. Roofing over your existing roof is not worth it. Step 3 cover the old shingles.

Install a layer of roofing felt over the roof before you begin installing the new shingles. We discuss the nesting method which helps minimize an uneven appear. Shingles are designed for flat surfaces. As long as it s done right and under the right conditions installing new shingles over old ones can last as long and look just as good as a complete re roof.

Is it okay to put the new shingles right over the old ones. If a shingle is. Use a flat pry bar. Installing a new roof over shingles takes less time than tearing off the old roof.

Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. They don t do a good job of bridging over gaps dips or humps including the. Leave the old valley flashing in place and install new over it. Use 1 5 or 1 75 inch roofing nails.

Manufacturers will still warranty the roof for the same amount of time as a re roof as long as it s done by a qualified installer. Looks just as good and lasts as long. If you haven t noticed yet we are not fans of shingle overs not at all. To level out an existing asphalt shingle roof rip down reduce the height of two courses of shingles as shown in the drawing below.