What Causes Shingles To Cup And Curl?


Shingles are integral to your roof because they shield your house from damage and keep it looking beautiful from the outside. Sadly, they are a frequent source of leaks and other roof damage for homeowners. Unfortunately, some shingles can start to twist, curve, or form a cup-like shape as time passes.

Uncertain or unsure of the indications of damaged shingles? Get in touch with professional roofing experts to schedule a full inspection and to learn more about roofing and shingle problems. We are committed to providing homeowners and business owners with prompt, friendly, and cost-effective roofing services to maintain your shingles and roof in pristine condition.

What You Need to Know About Shingles and Your Roof

Observable signs of damaged shingles.

If a significant number of shingles are cupped, curled, or showing other signs of granular loss, the roof’s ability to perform its function is compromised. If you observe such signs, it’s always a good idea to have your roof checked and repaired by an expert before the next storm.

Identify curling or puckering shingles and if they have started falling off the roof, have them replaced as quickly as possible to prevent water intrusion and other significant roof damage.

Causes of Shingle Curling, Cupping, and Other Damages


Temperature is the primary factor contributing to the cupping and curling of shingles. When weather conditions are extremely hot or cold, they can cause materials to become loose, expand, or compress.

With varied weather that can get too cold or too hot, businesses and homes will likely experience damaged shingles due to the freezing temperatures and scorching heat and humidity. Temperature fluctuations eventually cause asphalt to contract and become brittle, resulting in cupping and curling.

Insufficient attic ventilation

Hot air dense with moisture in the house tends to rise to the attic level. The surplus moisture will be moved around and expelled if your attic is sufficiently ventilated. However, the lack of proper ventilation in the attic may lead to mold growth on the decking and curled shingles.

Poorly Installed Shingles

How Your Shingles were installed will also determine whether they’ll curl or cup. If the professional you used didn’t use enough nails or put them in the wrong place, they might start curling. Conversely, shingles installed without enough nails will easily become loose.

Preventing Shingle Damages

Maintaining adequate ventilation in your attic is the first thing you can do to prevent shingle damage. This will ensure that the temperatures of the shingles stay within the recommended range.

Conversely, the roof and the shingles will serve you for more years if you let a professional roofing expert regularly maintain and inspect them. Ensuring that shingles you buy are certified by the Canadian Standards Association (CSA) is also imperative. This will ascertain that the product you choose for your house can withstand extreme temperatures and is up to the standards.

Final Verdict

Do you think your roof shingles require maintenance or repair? Do you want to find out how to protect the shingles on your roof from damage? You need the services of professional roofing experts. We will make prompt repairs and provide courteous advice about maintaining the excellent condition of your shingles and the roof.

Besides offering insights about shingle maintenance and installation, we offer other services such as leak repairs, roof replacements, and attic ventilation. You can rest easy knowing that the project will be done correctly the first time. We take pride in our certified and highly trained personnel who perform extensive roofing services using the most up-to-date tools, materials, and technology.

No matter where you’re, you can trust and rely on our top-tier roofing and shingle services.

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