1. Shingles Are Curling or Buckling

When asphalt shingles begin to curl at the edges (cupping) or buckle along the middle (clawing), it’s a clear sign of age-related deterioration or moisture damage beneath the substrate. Curled shingles lose their ability to shed water effectively and create entry points for leaks.

2. Granules Are Missing in Gutters

Asphalt shingles are coated in granules that protect against UV degradation. When those granules end up in your gutters in large quantities, the underlying mat is exposed and degrading rapidly. Look for bald patches on shingles from ground level.

3. Daylight Through Roof Boards

If you can see daylight through your attic, water can also get in. Even small penetrations lead to moisture intrusion, mold growth, and structural damage to rafters and sheathing over time.

4. Sagging Roof Deck

A sagging roof deck indicates structural damage — either from prolonged moisture intrusion rotting the sheathing, or from overloading. This is a critical safety issue requiring immediate attention. Do not walk on a sagging roof.

5. Your Roof Is Over 20 Years Old

Most asphalt shingle roofs have a functional lifespan of 20-30 years depending on installation quality, ventilation, and climate. If your roof is approaching or past 20 years, a professional inspection will determine whether proactive replacement makes financial sense versus waiting for failure.