Building a shed floor is actually pretty straightforward. for many handymen, it’s a doable job in a day and a half, from picking up the materials to fastening the final screw. using 3/4 inch thick pressure treated plywood for your shed floor is the most economical choice and will last you 20+ years if done well.. Use pressure treated 3/4 inch construction grade exterior plywood for the floor. it’s solid, won’t sag, and protects the substructure and is easy to sweep. on the shed walls use exterior rated 1/2 inch plywood for a waterproof finished look, and 3/4 inch cdx plywood on the roof for strength.. We also carry spf studs, spf dimensions, pressure treated floor joists, pressure treated runners/timbers, miratec/barn trim, and more. like we said, if it comes from a tree and goes on a barn, we distribute it!.
I used pressure treated poles and the first row of plywood and non-treated lumber above that. (gravel floor) if i was building a floor i would use treated for the floor also as there is a lot of moisture under the ground and under the wood to rot things out.. 3 use pressure-treated plywood on a shed floor; 4 sheathing a shed; building a shed isn't as involved as building a house or even a garage, but it still needs a roof, siding and floor. plywood is. I am building a backyard shed, 8x12. i realized i purchased 3/4" non-treated plywood for the floor... should i get treated instead? the shed will be on 4x4 treated skids on concrete blocks, with 2x6 joists. so the plywood will be 9+ inches off the ground in all areas. can i stick with the non.
