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Providing Peace of Mind Since 1932

Shingle Cupping: Why Does It Happen?

Asphalt shingles do not last forever, and they often let you know when they are deteriorating. Cupping is a classic indicator of shingle failure. Average homeowners confuse it with curling and fishmouthing. Anyone with a trained eye, however, will attest that the difference among such shingle deformations goes beyond the appearance.
Shingle Cupping: Why Does It Happen?
The defining quality of cupped shingles is a concave center. On the contrary, curled shingles have raised edges. Cupping is usually accompanied by some curling, but not all curled pieces of roofing material have a curved center.
Cupping can occur on both organic-mat and fiberglass-matter asphalt shingles, but it is more common on the former.
Garlock-French Corporation attests that aging is the number one reason for this defect. Although cupping is different from granule loss, granule buildup in the gutters might indicate that some shingles are start to deform due to deterioration.
Prolonged exposure to harsh elements accelerate roof wear. The effects of hail, thermal cycling and moisture speed up shingle degradation, so signs of cupping usually start to manifest themselves several years after installation.
Early detection matters to address shingle cupping. Bad shingles need to be repaired immediately or else they could result in bigger headaches.
While it helps to identify evidence of shingle cupping, it is imperative to leave thorough inspections to professionals. Cupped shingles are not necessarily leaky, but they are extremely fragile. One wrong move might inadvertently break them, which will worsen the situation.
Let Garlock-French Corporation determine the current condition of your asphalt shingle roof. Call us to set up your consultation in Minneapolis, MN, or any nearby community.