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Cupping and Curling Asphalt Roof Shingles
Curling and Cupping Roofing Shingles Should be
Replaced ASAP
By Mark J. Donovan
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Curling, fishmouthing and cupping asphalt roof shingles is a clear sign that
your shingles have been stressed and are in need of replacement.
If while inspecting your asphalt roof shingles you notice shingles with
concave centers and/or raised or curled edges your roof should be repaired
soon. As a matter of fact, if you observe these conditions prior to actually
walking on the roof, do not go further.
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Stay off the roof, as curling and cupping asphalt shingles are extremely
fragile and by walking on them you run the risk of cracking them and causing
roof leaks.
Curling and cupping asphalt shingles may not leak for a couple of years,
however they are at the stage where they could leak at any time, and thus
why I recommend replacing them as soon as possible. |
Photo by Mark Donovan |
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Curling and cupping roof shingles can occur for a variety of reasons. The
shingles may simply be old and solar and weather conditions may have simply
got the best of them. However, in many cases cupping and curling roof
shingles is a sign of inadequate insulation and ventilation in the attic. If
heat builds up in the attic and is not relieved by ridge, soffit, and gable
vents, the roof shingles can become extremely stressed. This stress
manifests itself in distorted and cracked shingles. |
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Curling and cupping asphalt roof shingles can also be the result of ice
dams. Water that works its way up under shingles and then freezes distorts
and stresses the asphalt shingles significantly. Again, proper attic
ventilation and insulation can prevent ice dams from occurring.
So if you observe cupping, fishmouthing or curling asphalt shingles, contact
a roofing contractor as soon as possible. |
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If
the asphalt shingle distortion occurred well short of the expected life of the
shingles also inspect your attic to make sure you have adequate attic
ventilation and insulation.
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