Install Roof Shingles Over Top Old Roof 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.

Install roof shingles over top old roof shingles.

Let s start with the good. 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. That s also why building codes commonly limit re roofing to no more than two layers. 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.

Damaged shingles should be removed to check the decking for problems. Putting new asphalt roof shingles right over old ones. Use 1 5 or 1 75 inch roofing nails. 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.

Many arizona homeowners with shingle roofs do decide to roof over their existing shingles because. 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. Step 3 cover the old shingles.

When roofing over your existing shingles can be a good idea. Drive nails at high points on the underlying roof the bottoms of the shingles. Damaged decking will need to be repaired before you can install any new shingles. Can you put new asphalt roof shingles right over old ones.

The two pieces should meet neatly at the corners. Why installing new shingles over old shingles can be good.