Thermal Splitting Roof Shingles

Certain conditions can cause asphalt shingles to crack such as high winds impact from hailstones or airborne debris.

Thermal splitting roof shingles.

What is thermal splitting. This usually happens where the roof shingles connect to the joints in the underlying layer of shingles. January 8 2019 by brienne gebhart. But thermal splitting is particularly a problem with fiberglass mat based asphalt roof shingles.

Thermal splitting is due to the contraction and expansion the shingle experiences as a result of changing temperatures. Thermally split shingles aren t randomly strewn out across the roof surface. The catastrophic early shingle splitting failures like the ones illustrated earlier in this article were principally a problem of lightweight fiberglass mat based asphalt roof shingles made during the period discussed above. A variety of factors lead to this problem including thermal cycling and the adhesive that holds each shingle in place.

Roof shingles are exposed to heat rain and humidity. Thermal splitting happens when the shingles on your roof expand and contract at quickly. Changes in temperature cause the material components of the shingles to warp then split apart. It may also form a diagonal pattern up the roof following the stair up pattern of the offset joints made during installation.

Thermal splitting is due to temperature related expansion and contraction. Splitting over shingle joints. Thermal splitting occurs due to changes in temperature that cause shingles to expand and contract. 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.

Unless the shingles are extremely heavy duty this can lead to thermal splitting. Too much filler in the asphalt mix may also cause the same. If the roof is fairly new cracking may be a sign of a weak mat or low quality shingles. What it looks like thermal splitting looks very different from shingle cracking.

Common asphalt shingle failure factors include improper storage and handling of the asphalt shingles before installation improper nailing improper flashing which pertains to any roofing material and defective asphalt shingle product material leading to thermal splitting cracking blistering staining and in some cases curling or cupping shingles. These conditions create stresses between the two assemblies that if extreme enough can result in shingle splitting or buckling. If thermal expansion is having an negative effect on your roofing system this is a good indicator that the asphalt shingles installed on your roof are defective or of low quality. How thermal splitting happens.

Rogers roofing the leading roofing company discusses facts about this unwanted shingle damage and how to prevent it from occurring. Craze cracking in organic or fiberglass shingles is an indication of aging. Thermal splitting typically happens where shingles bridge the joints in the. Thermal splitting is common in low quality asphalt shingles.