Install Roof Shingles Over Top Old Roof Shingles

If the old ones are flat and you fill in any missing tabs and you do no more that a total of two layers of shingles yes you can reshingle over old shingles.

Install roof shingles over top old roof shingles.

Many arizona homeowners with shingle roofs do decide to roof over their existing shingles because. Drive nails at high points on the underlying roof the bottoms of the shingles. Let s start with the good. You can save money because there s no dump fee for removing your old roofing and there s no need for additional felt paper over the old roof.

The two pieces should meet neatly at the corners. When roofing over your existing shingles can be a good idea. Putting new asphalt roof shingles right over old ones. That s also why building codes commonly limit re roofing to no more than two layers.

Why installing new shingles over old shingles can be good. Installing new roof shingles over old effectively doubles the weight of the roofing so you have to make sure your roof structure can handle the extra load. Install the eave piece first then the rake piece over it. 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.

Install a layer of roofing felt over the roof before you begin installing the new shingles. Damaged shingles should be removed to check the decking for problems. When you should tear off your roof and start from scratch instead. At the eave and the rake install u shape drip edge flashing made for reroof jobs.

Can you put new asphalt roof shingles right over old ones. Damaged decking will need to be repaired before you can install any new shingles.