Reshingle Roof Over Old Shingles

In addition if you overlay over existing shingles you miss the opportunity to install an ice and water leak barrier to your wood decking.

Reshingle roof over old shingles.

Shingles are designed for flat surfaces. Your existing layer of roof shingles is deteriorating and you need to get a new roof installed. If laying three tab shingles over three tab shingles it is important to nest the new shingles against the old to create a flat surface as friedman elaborates just below. Damaged decking will need to be repaired before you can install any new shingles.

How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h. Use a flat pry bar. 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. Can you put new asphalt roof shingles right over old ones.

The felt should be secured every six inches with nails or staples. 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 stepped texture created by overlapping 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.

This process starts with a 5 inch starter strip fit along the eaves and set against the second course of existing shingles see figure 2 16. Remove the ridge caps. One question you might have is can i reroof over existing shingles the answer is it depends state regulations and the condition of your roof both play a role in determining if you need a roof replacement tear off vs cover over. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture.

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

Damaged shingles should be removed to check the decking for problems. If your existing roof is old the barrier may not have been applied the last time your roof was replaced. 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. The following list includes some universal reasons not to reroof as well as some considerations or things to check out if you re seriously considering adding new roof shingles over old ones.