Thermal Splitting Roof Shingles

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Just because shingles are thermal cracked dosen t give the insurance company a get out of jail free card.

Thermal splitting roof shingles.

This usually happens where the roof shingles connect to the joints in the underlying layer of shingles. Thermal splitting is common in low quality asphalt shingles. These conditions create stresses between the two assemblies that if extreme enough can result in shingle splitting or buckling. Splitting over shingle joints.

Thermal splitting happens when the shingles on your roof expand and contract at quickly. Thermal splitting typically happens where shingles bridge the joints in the underlying layer of shingles. A variety of factors lead to this problem including thermal cycling and the adhesive that holds each shingle in place. It may also form a diagonal pattern up the roof following the stair up pattern of the offset joints made during installation.

Shingles expand in warm temperatures which cause the joints between them to decrease in size. It s possible that shingles made by some manufacturers do not meet the astm standards for tear resistance. Thermal splitting is due to the contraction and expansion the shingle experiences as a result of changing temperatures. It is characterized by thin large cracks between asphalt shingles.

Regardless of what you call it this tearing is caused by thermal expansion of the material. The term thermal splitting or cracking is a bit of a misnomer as in most cases the result of thermal splitting is a tearing of the shingles. Whether you have conventional 3 tab shingles or laminated asphalt shingles you may have to deal with thermal damage like this if your home is exposed to extreme temperature swings. They can be crease by wind damage at the same time.

There are no industry standards that specify the minimum bond strength of shingle adhesive strips. Shingle splitting due to temperature related expansion and contraction is called thermal splitting. Splitting happens when thermal expansion causes the different layers of a shingle to literally pull themselves apart from each other because one of the layers is secured by a fastener. Even where shingles meet the standards it s possible that the standards themselves were defective.

Reason behind thermal splitting in asphalt shingles. Meanwhile they shrink in cold temperature and the joints between them become larger. Changes in temperature cause the material components of the shingles to warp then split apart. On the other hand cracking is caused by more gradual wear and tear with thermal expansion creating smaller tears at a time so the cracks are more shallow.

This damage would lower the defense of your home by allowing water to leak into your roof.

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