Flooring question of which wood.

[Ron Dickey]

I understand that it could be 1/2 or 3/4 plywood
but what is the difference between
exterior plywood and Reg. plywood.

At HD I found some 3/4 mapel sanded for $45.

Ron D.

[Steve Frederick]

The difference is the glue used to assemble the ply's layers.
For the floor, it shouldn't make a difference, if you are covering the road side in tar, or paint etc.

[madjack]

...exterior ply has a waterproof glue...I am using 5/8 ACX for my floor and sheathing it in aluminum like the top and sides
madjack

[An Ol Timer]

All plywood today (except maybe some cheap stuff listed as interior only) is manufactured with waterproof glue. Stop and think when was the last time that you left a piece of plywood out in the weather and it delaminated.

[Eric Adams]

I used Advantech. 50yr life and its a epoxy coated board. Easy to cut and looks/feels like it'll take a bullet.

It is smooooooth also. I used it as flooring because it can take being submerged completely for long periods with no harm at all and cost $21 a 4X8 sheet of 3/4". Not a bad deal and you don't have to coat the underside of it. I bought it at a local Myers Lumber yard.

[Ron Dickey]

will pine work or should this be a hard wood?