I am going to lay wooden flooring on a concrete floor.
From the top, it will be like this: 14mm Dalafloda floor, plywood (to screw the floor into), age-resistant plastic, concrete.
My question is regarding whether the plywood needs to be attached to the concrete?
(Small thing to do but I don't like the idea of perforating the plastic with a lot of holes to fasten the plywood.)
