Architectural shingles, also known as laminated or dimensional shingles, are popular for their durability and attractive appearance. However, like any roofing material, they can experience failure over time. Common issues include curling, cracking, algae or moss growth, granule loss, and blistering. These problems often result from prolonged exposure to harsh weather conditions, poor ventilation, installation errors, or simply aging. Curling and cracking can happen when shingles dry out or become brittle, while granule loss might expose the underlying mat, leading to faster deterioration. Algae growth is mostly aesthetic but can hold moisture against the roof, which can accelerate wear. Blistering can occur when moisture gets trapped under the shingle surface, often indicating poor ventilation or a manufacturing defect.
To diagnose these issues, visually inspect your roof from the ground with binoculars or safely from a ladder if you’re comfortable and cautious. Look for lifted edges, missing granules on gutters, and discoloration. Run your hand gently over shingles to check for brittleness or a rough texture. Never attempt repairs when wet or on a steep roof, and avoid stepping on brittle shingles to prevent further damage. If you notice serious granule loss, curling covering large areas, or persistent leaks, it’s time to call a professional roofing contractor. When interviewing potential roofers, ask about their experience with architectural shingles and if they offer warranties that cover both materials and workmanship. Also, inquire how they ensure proper ventilation and what steps they take to avoid common failures on installations—they should provide clear, confident answers reflecting local climate considerations.