Hi Guys, I'm looking at the options of leveling the garden and was considering, decking with artificial turf on top. I've looked at easigrass but now trying to decide on the most cost effective boards to use, decking is about £14 per square meter, I've also priced marine ply but the only thing that seems cheaper is OSB but not confident I'll get much life out of it with the amount of rain we have. Any advice or knowledge on suitable base boards?