2 Layers Of Shingles On Roof

The biggest mistake people make when layering roofing is to purchase cheap shingles for the new roof.

2 layers of shingles on roof.

The importance of quality roof shingles. A roof is one of the most vital components of a house. Framing includes the roof trusses that sit at the top of your house and support the weight of all the materials used to build your roof. Posted july 31 2018 by onpage marie.

Having multiple layers of shingles is going to make your roof hotter because the heat gets trapped between the layers which could mean premature aging of the shingles. 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. Pros and cons of adding a second layer of shingles. Roofing layers from the framing to the shingles.

Decra shingle installation guidelines over 2 layers of asphalt shingles follow the local code. Fasteners course with full panels. This is especially true if you ve overlayed your new shingles on top of warped shingles. They seldom consider that in 15 years when their roofing once again fails they will have to pay significantly more to have someone remove both layers of shingles and apply new ones.

When shingles laying on two roof planes approach each other in a valley weave the layers of shingles across the valley to create an integrated unbroken water barrier across the valley. Apply a liberal amount of plastic roof cement at the base of any fixtures plumbing pipes or roof vents which break the plane of the roof surface. If the roof has multiple layers typically the insurance company will only insure the top layer. On a 1 200 square foot home that s an additional 3 000 to 4 000 pounds of shingles for the second layer.

If it needs to be replaced the insurance policy will only cover the replacement of the top layer. Replacing a roof can be very expensive and exhausting at the same time. Multiple layers of shingles roof deck attic air space and the insulation above the ceiling individuals who metal roof over solid deck asphalt shingle soft whisper content retrieval. The temporary savings you receive from adding a second layer of shingles does not outweigh the negative aspects.

So let s say we have a hail storm and the roof takes a beating. Ask your roofer about recycling options for old shingles. Why roof shingles work best in single layers. So we ll start at the bottom of the deck and work our way up through all the roofing layers until we reach the shingles and sunshine above your roof.