Fiberglass shingles are a popular roofing material due to their durability and affordability, but like any roofing product, they can experience failure over time. Common issues include granule loss, curling, cracking, and blistering. Granule loss exposes the asphalt layer beneath, which can accelerate aging and lead to leaks. Curling and cracking often happen because of prolonged exposure to harsh weather or poor installation practices, while blistering may occur from trapped moisture between the layers of the shingle. These problems are typically caused by normal wear and tear, improper ventilation in the attic, or extreme temperature fluctuations. By keeping an eye on these signs, homeowners can catch potential issues early before they become costly repairs.
To check your shingles safely, climb a sturdy ladder on a calm day and look for missing or damaged shingles, loose granules in your gutters, or signs of discoloration and deformation. Avoid walking directly on shingles if possible, since this can cause additional damage. If you notice widespread damage or suspect a ventilation issue, it’s best to call a professional roofer who can diagnose underlying problems and recommend repairs or replacements that comply with the manufacturer’s warranty. When consulting a contractor, ask, “How will you address underlying ventilation or moisture issues that contributed to the shingle damage?” and “Can you explain if this repair or replacement will maintain the product’s warranty coverage?” These questions ensure the root cause is fixed and your investment is protected.