
Everything metal on the chimney rusting years early?
- Rust on caps, screens or chase covers within sight of the water
- Orange streaks down siding or masonry from the top
- Parts failing at half the age they reach inland
Why it happens in San Diego: Within a couple of miles of the water, salt air is the quiet destroyer: caps, spark screens, dampers and chase covers corrode from the coast inward, years before the same parts fail inland. On coastal San Diego homes we check the metal before the masonry, and stainless is not an upgrade here; it is the only version of the part that lasts.
What fixes it, and what it costs
On the coast, metal is a wear item and the inspection is really a metal check. The fix is buying the fight once: stainless caps and covers with proper drip edges, fasteners to match, and the corroding parts replaced before they perforate, because once water is inside the chase or the flue, the salt has won a much bigger bill.
- Single flue, 304 stainless, fitted
- $150–$400
- Multi-flue cover, made to measure
- $500–$1,200

























