I had a prefab shed installed, which I'm finishing as a detached office. Since the floor got covered in drywall dust, it often looks like there's moisture seeping up between the floorboards. I'm planning to lay down a vapor barrier and laminate flooring. Should I be worried about this moisture?
The floor is built on metal joists set on a concrete slab. I'm concerned that rain is flowing onto the slab. Is there a product I can use to seal around the bottom of the joists? I assume I shouldn't completely plug those rectangular holes, but I was thinking of covering them with wire mesh or something to keep critters out.