- Feb 28, 2014
- 56
- 2
- 41
You either use pressure treated wood, which will still only last a few years in ply wood form. Or you coat it with something whether it be an outdoor paint or stain. If you plan on using a form of plywood in your build I would suggest a marine grade plywood which is used in boat flooring, will hold up to water far better. Just a bit more pricey.