How Thick Should Plywood Be For Concrete Forms?
How Thick Should Plywood Be For Concrete Forms? Sheathing forms the surface of the concrete. It should be smooth, especially if the finished surface is to be exposed. It is normally 1-inch (3/4-inch dressed) tongue- and-groove lumber or 3/4-inch plywood. Concrete is plastic when placed in the form, so sheathing should be watertight. What type