Roofing Shingles Over Old

Remove the ridge caps.

Roofing shingles over old.

Shingles are designed for flat surfaces. Because asphalt shingles are routinely exposed 5 in rip down the first strip the starter course so that it is 5 in. 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. Asphalt over asphalt is not advisable.

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. If a shingle is. To level out an existing asphalt shingle roof rip down reduce the height of two courses of shingles as shown in the drawing below. Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of.

Step 3 cover the old shingles. Doing it now will make it easier to keep the reroofing job clean. They don t do a good job of bridging over gaps dips or humps including the. Damaged shingles should be removed to check the decking for problems.

The felt should be secured every six inches with nails or staples. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. Use a flat pry bar. Why not add new roof shingles over old.

How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h. Damaged decking will need to be repaired before you can install any new shingles. Current shingles are curling or in bad shape the new shingle roof should lay flat on your old one. Roofing second layer of shingles roofing.

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. Install a layer of roofing felt over the roof before you begin installing the new shingles. How to do it remove caps. 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.