Cupping, curling or clawing on your asphalt shingles- everything you need to know

Asphalt shingles are one of the most popular roofing materials in North America, known for their affordability and durability. However, like any roofing material, they are subject to wear and tear over time. One common issue that can arise with asphalt shingles is cupping, curling, or clawing. In this blog post, we will cover everything you need to know about these issues, including what causes them, how to identify them, and what to do about them.

What is Cupping, Curling, and Clawing in Asphalt Shingles?

Cupping, curling, and clawing are all different types of deformations that can occur in asphalt shingles. Cupping occurs when the edges of the shingles curl upward, while the center remains flat. Curling occurs when the entire shingle curls upward, and clawing is when the shingle's edges remain flat, but the center of the shingle curls upward. All of these issues can impact the shingles' ability to protect your home from the elements and may indicate that your roof needs repair or replacement.

What Causes Cupping, Curling, and Clawing in Asphalt Shingles?

Cupping, curling, and clawing in asphalt shingles can be caused by a variety of factors. Here are some of the most common causes:

1. Heat: Excessive heat can cause asphalt shingles to expand, leading to cupping or curling.

2. Moisture: Moisture can cause asphalt shingles to warp or deform over time.

3. Age: Asphalt shingles naturally deteriorate over time, and as they age, they become more prone to cupping, curling, or clawing.

4. Poor installation: If your asphalt shingles were not installed properly, they may be more prone to cupping, curling, or clawing.

5. Poor ventilation: Poor ventilation can cause moisture to build up in your attic, which can cause the shingles to warp or deform.

How to Identify Cupping, Curling, and Clawing in Asphalt Shingles

Identifying cupping, curling, and clawing in asphalt shingles is relatively easy. You can do it yourself by inspecting your roof from the ground using a pair of binoculars. Look for any shingles that appear to be cupped, curled, or clawed. You may also notice that the shingles are beginning to lift or buckle.

If you are comfortable climbing onto your roof, you can also inspect the shingles up close. Look for any shingles that are clearly deformed or appear to be lifting or buckling. You may also notice that the shingles are beginning to crack or show signs of wear and tear.

What to Do About Cupping, Curling, and Clawing in Asphalt Shingles

If you have identified cupping, curling, or clawing in your asphalt shingles, you should take action as soon as possible. Here are some steps you can take:

1. Repair or replace the affected shingles: If the damage is limited to a few shingles, you may be able to repair or replace them yourself. However, if the damage is extensive, it's best to hire a professional roofing contractor.

2. Improve ventilation: If poor ventilation is the cause of the problem, you may need to improve your attic ventilation to prevent moisture buildup.

3. Install a new roof: If your asphalt shingles are nearing the end of their lifespan, or if they have significant damage, you may need to replace your entire roof.

Preventing Cupping, Curling, and Clawing in Asphalt Shingles

Preventing cupping, curling, and clawing in your asphalt shingles is essential to ensure the longevity and effectiveness of your roof. Here are some tips for preventing these