A terrace by the sea: what survives the salt

Teak, powder-coated aluminium and sun-resistant fabrics. How many seasons it takes for each of them to fade.

July 17, 2026

A terrace with teak furniture by the sea

A terrace in Castelldefels, forty metres from the water. After two seasons the owners changed the cushions, washed down the aluminium and left the teak alone — it had turned silver, and that turned out to be the best thing that could have happened to it.

Three enemies and what they do

They work together but break different things, and each has to be guarded against separately.

01 Salt It settles as a film and eats into anything containing iron: screws, hinges, lounger mechanisms. A4 stainless holds up; A2 is covered in rust spots within two years.
02 Ultraviolet It burns the pigment out of fabrics and plastics. Ordinary outdoor fabric loses its colour in a season; solution-dyed fibre holds for five to seven years.
03 Wind It doesn’t damage materials itself, but it carries sand. Sand works like sandpaper: it takes matt powder coatings off faster than salt does.
04 Damp Night dew near the water doesn’t dry until midday. Cushions without quick-drying filling pick up a smell within a season.

Teak after two seasons by the sea. The silver layer is protection, not damage.

What to choose, material by material

Teak and iroko need no upkeep at all: they go grey and last twenty years. If you want to keep the honey colour, that means oil twice a year, forever. Buy aluminium only powder-coated and only with A4 fixings. Weave should be synthetic, in solution-dyed fibre; natural rattan does not survive by the sea.

By the sea, wood doesn’t rot — it goes grey. What rots is whatever it was screwed together with.

What holds up and what doesn’t

Material	Salt	Sun	After 5 years
Teak	takes it	goes grey	as new
Aluminium	takes it	takes it	sand scratches
Woven fibre	takes it	takes it	slightly lighter
Solution-dyed fabric	takes it	takes it	a shade lighter

Cushions go into a storage box for the winter. It doubles their life — we have checked on a dozen projects.

Porcelain outdoors

For a terrace you use a 20 mm slab with an R11 anti-slip surface. It is laid on adjustable pedestals without adhesive: a ventilation gap stays under the slab, water drains away, and any slab can be lifted and replaced in ten minutes. It costs more than laying on adhesive, but by the sea it pays for itself with the first repair.

Light tones are more practical here than dark ones: black porcelain on a south-facing terrace gets so hot by three in the afternoon that you cannot walk on it barefoot.

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