tcalo wrote:Thank you Richard. My only fear about putting 2 layers of wood is flying insects building nests inbetween the 2 boards!
Well mine is inside the garage, the OSB goes right to the ceiling and it has a door. It's completely sealed off. I wouldn't do that outside. I'd just just use 3/4 on the inside.
FYI the pressure treat is not really necessary, if anything I'd only use it on the floor and the bottom plate for the walls. Just make sure it's not sitting on the ground. I don't know if it was mentioned but a 4*8*8 bin will hold about 3 ton.