From the street
- A wavy or lumpy roof surface often means an overlay over an older roof.
- Shingles with exposed fiberglass or missing granules show heat wear on south and west slopes.
- Moss or lichen on north slopes under trees.
From the attic
- Water trails down the chimney chase or rafters.
- Daylight around vents or at the ridge.
- Dark, soft sheathing near the eaves.
Common East Bay patterns
East Bay roofers commonly find worn shingles over past overlays on older Oakland and Berkeley homes, flashing failures around brick chimneys, tree damage in the Oakland and Berkeley hills, and sun-baked shingles on inland Contra Costa tract homes.
When should I call?
After the first big storm of the season if anything stained, before listing your home, or when your insurer asks about roof age. An inspection with photos gives you something concrete to act on.
Every roofer we work with is licensed, insured and highly reviewed by Bay Area homeowners.
Get a free replacement quoteFrequently asked questions
Why does my roof look wavy?
Often an overlay installed over an older layer, or deck sag. Both are worth a roofer's look.
Is lichen a problem?
On its own it's mostly cosmetic, but it holds moisture. Combined with brittle shingles it's a sign of age.
Should I worry about granules after a heat wave?
Heavy granule loss on an older roof means the shingles are wearing out.
Sources
Sources reviewed November 11, 2026. Figures are published estimates and official fees, not quotes. Confirm prices, permits and requirements with your contractor and building department. This page is general information, not legal or insurance advice.