What Causes Shingles to Curl, Crack, or Lose Granules?

Asphalt shingles protect your home from rain, wind, and changing temperatures, but they do not last forever. Exposure to New Hampshire’s weather can take a toll on roofing materials. Curling edges, visible cracks, and loose granules can signal wear or other roofing concerns. Understanding these changes can help homeowners know when to schedule an inspection.

Why Do Asphalt Shingles Curl?

Shingles may curl at the edges or develop raised corners as they age. Long-term exposure to sunlight and temperature changes can dry out roofing materials, making them less flexible. Poor attic ventilation can contribute to excessive heat buildup beneath the roof, potentially accelerating shingle deterioration.

Moisture can also play a role. If roofing materials are repeatedly exposed to damp conditions, they may deteriorate sooner than expected. Curling shingles can become more vulnerable to wind and water getting underneath them, so widespread or noticeable curling should be evaluated by a roofing professional.

What Causes Shingles to Crack?

Cracks can develop as shingles become brittle with age. Repeated expansion and contraction during seasonal temperature swings can place stress on roofing materials. Severe weather, impact damage, or improper installation may also contribute.

Even small cracks deserve attention, particularly when they appear across multiple shingles or alongside other signs of deterioration. Damaged shingles may no longer shed water as intended, increasing the risk of leaks and damage to the roof deck or interior.

Why Are Roofing Granules Coming Off?

The small, sand-like granules on asphalt shingles help protect the underlying material from ultraviolet rays and contribute to the roof’s color. It is normal for a small amount of loose granules to appear in gutters, especially after a new roof is installed. Heavy or ongoing granule loss, however, can indicate that shingles are aging or deteriorating.

Look for bare-looking patches, areas where the darker material beneath is visible, or a noticeable buildup of granules in gutters and downspout openings. Granule loss can occur as shingles wear down from weather exposure, foot traffic, or physical damage. An inspection can help determine whether the loss is minor or part of a larger problem.

When Should You Have Your Roof Inspected?

One damaged shingle does not necessarily mean your entire roof needs replacement. The roof’s age, the extent and location of the damage, and the condition of surrounding shingles all matter. If you notice curling, cracking, missing shingles, excessive granules in your gutters, or signs of a leak inside your home, arrange for a professional assessment.

Have your roof checked after significant storms if you notice changes from the ground. Avoid climbing onto the roof yourself, as damaged or loose shingles can create unsafe footing.

Get Help With Roofing Concerns From Nor’Easter Roofing

Addressing shingle problems early can help you understand your roof’s condition and determine whether repairs or replacement are appropriate. Nor’Easter Roofing provides roofing services for homeowners in New Hampshire and the surrounding Lakes Region. If your shingles are curling, cracking, or losing noticeable amounts of granules, contact Nor’Easter Roofing at 508-667-3278 to schedule an inspection and discuss the next steps for protecting your home.