Asphalt shingle curling is one of the most common signs you may need to replace your old roofing system. Most experts believe curling is a problem exclusive to organic-mat shingles; however, they are known to occur in fiberglass-mat shingles as well. Curling is most notable at the front edge of a shingle tab, causing the shingle to curve either upward or downward, exposing the vulnerable underlayment.
Here are the signs of shingle curling and how it can be fixed.
Curling and Leakage
You don’t have to be a professional roofer to know that leakage is a definite sign of roof failure. Roof decks with curled shingles will not necessarily leak, but this is known to happen in some cases. However, walking on the roof and stepping on the affected shingles will definitely lead to water penetration. That said, if you are experiencing leaks, have your roof inspected right away.
Common Causes
When water molecules between the asphalt granules evaporate, they expand. This causes the tab to warp to accommodate the sudden increase in size. The result is curling of either the front or side edges of the shingle tab. This problem is usually caused by poor quality roofing materials, but improper installation is also a known culprit.
Proper Ventilation
You can lessen the effects of curling asphalt shingles with proper roof and attic ventilation. Ask your roofing company about your options about keeping your roof properly ventilated for greater control of the humidity. This would reduce the amount of moisture retained in the individual shingles and should curtail the curling effect somewhat.
Tedrick’s Roofing is your leading provider of high-performance roofing products and service as well as attic insulation, gutters and more. Give us a call today at (206) 824-3440 and (253) 499-9660, or fill out our online contact form to schedule a no-obligation roof inspection and get a free cost estimate. We serve homeowners in Tacoma and nearby areas.