Put Shingles Over Old Roof

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.

Put shingles over old roof.

Does it cost more to tear off. Doing it now will make it easier to keep the reroofing job clean. 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.

Leave the old valley flashing in place and install new over it. Install a layer of roofing felt over the roof before you begin installing the new shingles. Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of. They don t do a good job of bridging over gaps dips or humps including the.

Because asphalt shingles are routinely exposed 5 in rip down the first strip the starter course so that it is 5 in. Damaged decking will need to be repaired before you can install any new shingles. Roofing over your existing roof is not worth it. Hope you like it.

How to do it remove caps. If a shingle is. The felt should be secured every six inches with nails or staples. Why not add new roof shingles over old.

To level out an existing asphalt shingle roof rip down reduce the height of two courses of shingles as shown in the drawing below. If you haven t noticed yet we are not fans of shingle overs not at all. We discuss the nesting method which helps minimize an uneven appear. If you need to redo your roof you might be tempted to save some money by having another layer installed over the existing shingles.

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. Use 1 5 or 1 75 inch roofing nails. Step 3 cover the old shingles. Use a flat pry bar.

Shingles are designed for flat surfaces. Damaged shingles should be removed to check the decking for problems. We don t recommend them nor do we do them. Here is a video on how we lay a second layer of asphalt shingles over existing asphalt shingles.

Place the top of each starter shingle firmly against the bottom of the shingle immediately above it and even with the eaves then nail it into place. Remove the ridge caps. Is it okay to put the new shingles right over the old ones. Installing a new roof over shingles takes less time than tearing off the old roof.