Trex composite decking is very durable.
Something similar should be available in UK.
Often used to build steps right on top of old damaged concrete steps.
Something like that will surely still get slippy when covered in moss/algae/rotten leaves though. Normal wooden decking will be fine if you keep it clean, and add those sandpaper-like grip strips.
Trex composite decking is very durable.
Something similar should be available in UK.
Often used to build steps right on top of old damaged concrete steps.