Roofing Shingles Over Old

Remove the ridge caps.

Roofing 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. 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. But unless the sheathing is extensively damaged or the structure can t support the weight of another layer of roofing a better solution is to apply a new layer of shingles right over the old one. Use a flat pry bar.

Shingles are designed for flat surfaces. How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h. Damaged shingles should be removed to check the decking for problems. Why not add new roof shingles over old.

Roofing second layer of shingles roofing. Doing it now will make it easier to keep the reroofing job clean. How to do it remove caps. Current shingles are curling or in bad shape the new shingle roof should lay flat on your old one.

They don t do a good job of bridging over gaps dips or humps including the. Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of. This means the total roof weight was probably greater when the previous layer of shingles was installed than the new metal roofing. Done correctly a reroof job will look as good and last as long as a new roof for a lot less money and a lot less hassle.

Leave the old valley flashing in place and install new over it. The felt should be secured every six inches with nails or staples. One important thing to remember when you re deciding what type of roof to buy is that new asphalt shingles shouldn t be placed on top of old asphalt shingles. Damaged decking will need to be repaired before you can install any new shingles.

But if the current. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. Step 3 cover the old shingles. Install a layer of roofing felt over the roof before you begin installing the new shingles.