Roof flashing pulling away — San Francisco, California
Roof flashing is the thin metal strip that seals joints where the roof meets walls, chimneys, dormers, or vents. When it pulls away, lifts, or develops gaps, rainwater bypasses the shingles and runs directly into the roof deck, causing rot, mold, and interior water damage. A roofer removes the old sealant, re-bends or replaces the flashing, re-integrates it with the shingle courses, and applies fresh roofing cement to restore a watertight seal.
Waarom dit veel voorkomt in San Francisco
Winter rains expose roof leaks and drainage failures on the city's steep, hilly lots, while salt-laden fog accelerates flashing corrosion. Flat and low-slope roofs common on multi-unit buildings require specialized membrane maintenance to handle the prolonged wet season.
Who to call
For this problem in San Francisco, call a: Dakdekker
Vind een Dakdekker in San FranciscoSymptoms to look for
- Visible gap between the metal flashing and the wall or chimney
- Water stains on ceiling or walls near where the roof meets a vertical surface
- Rust streaks or corrosion visible on flashing edges from the ground
- Lifted or bent metal strips along the roofline after a storm
- Damp or musty smell in the attic near wall or chimney intersections
Spoeddienst in San Francisco
Emergency home services in San Francisco are available 24/7 at premium rates — expect $150–$300+/hour for after-hours plumbing or electrical, the highest tier in the US. Response times average 45–90 minutes given hilly terrain and parking scarcity. Always verify an active CSLB license and proper DBI permits.