Composite vs timber decking: picking the right boards for a Crawley garden
Published 2026-03-04 · by Joshua Lewis
In a Sussex garden, composite decking (Millboard, Trex, Ecoscape) typically costs £150–£220 per m² installed and lasts 20–25 years with almost no maintenance. Quality hardwood timber (iroko, yellow balau) sits at £130–£180 per m² installed, needs oiling every 1–2 years, and lasts 15–20. Softwood (pressure-treated pine) is cheapest but shortest life.
Composite — pros and cons
Pros: no splintering, no staining or oiling, colour-stable, better grip when wet, more consistent appearance. Cons: higher upfront cost, feels hotter in direct summer sun, some cheap brands scratch, less warmth underfoot than timber.
Timber — pros and cons
Pros: warmer look and feel, renewable material, cheaper upfront, ages gracefully if you like the silver-grey weathered look. Cons: splinters if not maintained, needs re-oiling, can stain from leaves, knots can pop.
What we recommend in a Sussex garden
Sussex gets wet. A lot. If your garden is shaded and you don't want to be on your hands and knees oiling every year, we lean toward composite — Millboard in particular if the budget allows, Ecoscape if tighter. If the deck is in full sun, the garden is mature, and you like the patina of weathered wood, hardwood timber looks beautiful and ages into the garden.
One thing to not skimp on: the sub-frame. Every failed deck we're called to replace failed because the joists or supports weren't specced right, not because the boards were wrong.
Common questions
How long does decking installation take?
A typical 20m² deck with steps: 3–5 working days. Larger or with balustrade/pergola: a week plus.
Do I need planning permission for a deck?
Usually not for decks under 30cm high. Above that, or within 20m of the highway, check with your local planning authority.