Guide · Climate
Coatings for salt air and coastal homes
The ocean is beautiful. It's also corrosive.
A home near the water pays a price for the view: salt-laden air settles on every surface, drawing moisture and attacking finishes and fixings around the clock. Coatings that shrug it off inland can struggle a few blocks from the beach. Choosing surfaces for a coastal home means thinking about salt, not just style.
What salt air does
Salt is hygroscopic — it pulls moisture from the air and holds it against surfaces. On finishes that means a heavier moisture load, faster breakdown of vulnerable coatings, and corrosion of any exposed metal. Exterior and semi-exposed surfaces feel it most, but even interiors near open doors and windows carry more salt and humidity than inland homes.
Choosing finishes that cope
- Mineral, breathable finishes that don't trap the extra moisture
- Sealers chosen specifically for a coastal, high-salt environment
- Fewer joints and seams where salt and damp can get a foothold
- Surfaces that can be cleaned down easily to remove salt build-up
- Honest expectations about fully exposed exterior surfaces in a marine setting
Where microcement and lime fit
Seamless mineral finishes have real advantages by the coast: no grout lines for salt and damp to work into, a breathable mineral body, and a sealer that can be specified for the environment. For interiors and covered areas of a coastal home they're a strong choice. For fully exposed exterior surfaces in a marine setting, we'll give you a straight answer about what any finish can and can't do — the sea is undefeated, and good detailing and maintenance matter more than any single product claim.