2 Laycers On A Roof

Assuming your roofing contractor is using standard 36 wide 15 roofing felt double coverage means that each layer of felt put down across the roof laps 19 over the upper half of the previous course.

2 laycers on a roof.

Two layers of shingles trap more heat which in turn damages the shingles and shortens the life span of the roof. You can t know for sure that there aren t any soft spots or. If you do remove the old shingles you will end up with a nice fresh layer of felt on the roof deck. If you don t tear off the old layer you can t examine the decking.

We are really talking about two different issues. Pros and cons of adding a second layer of shingles. Most building codes allow this but is it a good idea. Re shingle roof as part of a larger plan.

If you have done some serious research on roofing then you have probably heard about adding a second layer of shingles on top of the old ones. For a second layer to be as good as a roof tear off you would have to have sound decking no leaks and a roof with no sidewalls where flashing is needed in order to tie the tiles in to the exterior walls. Pros to overlaying a shingle roof. You can usually see the underside of plywood decking from the attic.

Here are the pros and cons. A roof is one of the most vital components of a house. Most cities and towns allow a maximum of two layers of shingles says chad muth president of muth company roofing in westerville ohio. The first course starts with an extra 1 2 wide run.

Replacing a roof can be very expensive and exhausting at the same time. When a buyer is purchasing a home their homeowner s insurance carrier will inquire about the age of the roof and the number of layers. Here are the layers of a roof in order of application bottom to top. Decking most often made out of plywood this roof layer is installed over the framing in a typical roof install.

Two roof layers can work if the existing roof is in good condition but you shouldn t put more than two layers of shingles on your roof because of the weight. Posted july 31 2018 by onpage marie. So anywhere along the gable end that you can see the felt you ll see two layers. Despite these drawbacks layering shingles can still be the best plan for your roof.

Saving on the initial shingle installation doesn t solve the long term cost of adding a second layer of shingles. But contractors who spoke with angie s list say best practices call for stripping the roof down to the wood deck to inspect it before installing a new roof. One of the situations where this option can make the most sense is for a temporary fix as part of a long term plan. Now you just have to decide whether to remove the existing roof shingles or recover the roof.

First of all multiple layers of shingles simply means layering a new asphalt shingle roof on top of the old one rather than stripping the roof completely to expose the sheathing and replacing it with new shingles. It provides structure by tying the trusses and joists together.