Decking needs refitting - though not sure what foundation is like

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Just your standard decking timber from your local timber merchants would do the trick . try lining the ground where your new decking is with damp proof coursing , damp proof membrane and treat the timbers what will be the footings .

Hello there. Composite decking from Trex cost approx £11 per 1m length. Even considering that Trex is the most developed composite decking theres plenty of other suppliers like edecks.co.uk, wpc-decking.co.uk. In a battle between composite and wood deckings is that composite doesn't rot, stain, fade and in most cases you have 25 years guarantee on the product. When wood ones, regardless what type of wood you choose you have to wash and oil every year. In my opinion composite wins. As long as your frame is done well with plenty of noggins to support joist then the decking will last for years to come. Regards Michal mDucanon