There are a number of concrete sealers
Franklin comes to mind, can't remember the exact name/number. 1011???
Can the plywood be floated?
That way you can put a plastic barrier between the ply and the slab
Franklin comes to mind, can't remember the exact name/number. 1011???
Can the plywood be floated?
That way you can put a plastic barrier between the ply and the slab