sleepers over concrete
I'm enclosing an integral garage for more living space and had a question about putting pressure treated sleepers down to straighten the wavy concrete floor. I'm pretty sure the was no vapor barrier laid down prior to the floor being poured. Should I put a layer of 6 mil plastic down and then the sleepers? If not, should I put sil sealing foam down underneath the sleepers (so wood does not contact concrete) or Liquid Nail the sleepers or just plain old tapcon them down? I read the other threads concerning the rigid insulation. I'm just concerned with moisture causing mold problems in the future. (Not that I have ever noticed moisture wicking up from the floor in the last 11 years).
Thanks in advance.
Re: sleepers over concrete
usually garage floors are at grade, where the house if on a slab is above. lots of times the garage floor isn't as thick a slab either. if you have the ceiling clearance maybe you could float another layer after a bonding agent - even adding in-floor heating, hydronic or electric. just a thought.