Common Shingle Roof Problems
Wind-Lifted and Missing Shingles
Shingles are held by nails and a strip of adhesive that bonds each row to the one below. Strong winds, including winter storms and fall Diablo winds, can break that seal and lift or tear off shingles. Once a shingle is gone, the underlayment is exposed to sun and rain.
Granule Loss
The colored granules on top of shingles protect the asphalt from UV. As shingles age, granules wash off into the gutters. Some loss is normal in the first year or two. Heavy granule loss on an older roof, with bare black patches showing, means the shingles are near the end of their life.
Curling, Cracking and Brittleness
Heat drives oils out of the asphalt over time. Shingles curl at the edges, crack across the tabs, and become brittle enough to break when walked on. This usually shows up first on the sunniest slopes.
Nail Pops
A nail that wasn’t driven straight, or that backs out as the deck moves with temperature changes, can push up through the shingle above it and make a small hole.
Ridge Cap Damage
Ridge caps sit at the peak, where wind and sun hit hardest. Cracked or missing caps let water in along the top of the roof.
Trees and Debris
Branches rubbing on the roof grind away granules and eventually wear through the shingle. Debris piled in valleys holds moisture against the shingles. Keeping limbs trimmed back from the roofline also keeps rats from using them to reach the roof and attic.
For problems around pipes, vents, skylights and chimneys, see roof leak repair.
🏠
Damaged shingles photo
1200 × 800 · placeholder