Why Do My Roof Shingles Curl

Over time the cumulative effects of sunlight moisture and changes in temperature can cause asphalt roofing shingles to curl or cup.

Why do my roof shingles curl. The shingles on your roof serve a dual purpose. You ve likely figured it out curling shingles on your roof aren t a good thing. The last winter was extremely cold shingles may begin to curl when the weather changes during the. Why does my cedar roof curl.

If your roof is over 15 years old and the shingles are starting to curl it s a sign that the materials are old and that the home needs a new roof. Allow us to explain likely reasons. Roofs with multiple layers of shingles are more likely to trap heat and force the material to curl sooner than it should. If your roof has maxed out its useful life and nearly all the shingles are curling you are likely in need of full roof replacement.

The shingles on the second layer of the roof won t be as secure and are easily blown and curled by high winds. When heat and moisture get trapped in your attic the shingles are basically baked from the inside out. The air that is taken in is displaced through higher parts of the roof. Either way this is a sure way for your shingles to curl.

If the roof has. Shingles were improperly installed the most common problem here is that whoever installed your roof didn t use enough nails per shingle or improperly placed the nail. The result of inadequate venting is moisture and heat being trapped in your attic. Repair of curled cupped roof shingles.

Why do asphalt shingles curl. A roof ventilation system works by pulling in outside air from intake vents placed on the lower part of the roof. Lumpy bumpy or curling shingles that do not. Additional heat on the bottom side of shingles can cause them to wear prematurely fade and curl.

Some materials now have lifetime warranties but that doesn t mean they did 10 years ago. If this is occurring at your home you re probably wondering why it s happening. Replacement is the only solution for this problem. If you have an older roof curling asphalt shingles could be a sign that your roof has withstood a few too many heavy snows or hail storms.

Insufficient attic ventilation one of the top reasons why roof shingles curl is that your attic doesn t have enough ventilation. However if your shingles are curling excessively or a significant number of shingles are starting to curl it s important to take action. Of course our roofs protect us from the weather but unfortunately nothing protects our roofs from the weather. Curling is a natural process that reflects the continual barrage of the sun s ultraviolet rays and weather effects like rain on wood.