Put in the size of your deck to see the boards, joists, bearers, post bases and screws you need, for timber or composite, with typical UK prices. Free, no sign-up.
Quotes Made Simple works out the materials, adds your labour and markup, and the customer signs on your phone before you leave. Built by a tradesman.
Try it free for 14 days400 mm apart for timber boards, 300 mm for most composite boards.
About 35 per m² for timber, using two screws at every joist.
Timber is cheaper to buy. Composite costs about twice as much but needs no staining.