Quick answer: Sea-salt haze dissolves in plain water — the trick is to rinse it off, not wipe it off. Hose or generously spray the glass first (dry-wiping salt crystals is how coastal glass gets its fine scratches), then wash with a vinegar solution and dry with microfibre. Do the frames and seals at the same time: salt is corrosive, and it costs seaside homes far more in fittings than in cleaning time. Within a mile of the sea, expect to clean two to four times as often as an inland home.
The sea view is why you bought the place. The permanent haze on the glass is the subscription fee. Salt spray travels much further than the beachfront — wind-carried salt aerosol routinely reaches homes a mile or more inland, and anything with a sea view is by definition in the spray path.
Why salt haze behaves differently from dirt
Salt is hygroscopic: it pulls moisture out of the air. So a salted pane doesn't just look dusty — it develops a damp, smeary film on humid days, dries crystalline on sunny ones, and holds onto every other particle that lands on it. And unlike dust, salt crystals are hard and angular: rubbing a dry cloth over salted glass is gentle sandpapering, which is where the micro-scratched "sea-worn" look on old coastal windows comes from.
The rinse-first method
1. Flood before you touch. Hose the glass, or spray it wet enough to run. Salt is one of the most water-soluble things on Earth — most of the haze is gone before a cloth is involved, and so is the scratch risk.
2. Wash with vinegar solution. 1:4 white vinegar to water cuts the residual film and any mineral spotting from previous cleans. Microfibre pad, light pressure.
3. Dry properly. Squeegee or dry microfibre. Anything left to air-dry redeposits its salt load exactly where it was.
The bit that saves real money: frames and seals
Salt corrodes aluminium fittings, pits uPVC hinges and perishes rubber seals years ahead of schedule — coastal surveyors see it constantly. While the glass is wet, wash the frames, hinges and weep holes too, and rinse the seals. Five extra minutes per window, and it's the difference between hardware that lasts and hardware that seizes. If your windows also steam up inside in winter, that's a separate problem with a separate fix — covered here.
Coastal frequency (the honest number)
Inland homes get away with quarterly cleaning. Within sight of the sea, monthly is realistic; on an exposed front, after every blow. That frequency is why coastal window cleaners charge premium round rates — and why seaside homes are where robot cleaners earn their keep fastest. A CleanBot R1 turns "after every storm" from a chore into a ten-minute supervision job: it grips at 6,500Pa, maps the pane, and its damp microfibre pass is exactly the dissolve-and-lift action salt needs. Sea-facing upper floors — the panes you can never safely reach from a ladder in coastal wind — are precisely what a suction robot exists for.
FAQ
Does salt damage the glass itself?
Glass is essentially salt-proof — the damage comes from dry-wiping crystals (scratches) and from long-term alkali attack only in extreme neglect. Frames and seals are the real casualties.
Rain still leaves my sea-view windows hazy — why?
Rain near the coast often carries salt itself, and it dries leaving both salt and whatever was on the pane. Only a wash-and-dry actually finishes the job.
Any coating that repels salt?
Hydrophobic coatings help water (and dissolved salt) sheet off and buy you time between cleans, but on a spray-facing elevation nothing eliminates the need for frequency.
For the full picture of what your postcode does to your panes — roads, trees, hard water and salt — see why windows get dirty so fast.