Slab on grade questions
I am looking into purchasing a home built in 1973 and want to make sure I do my homework prior to taking the plunge. The garage and den are both at ground level on a slab. The rest of the first floor is built above a crawlspace. The den currently has carpet but I would want to replace it with laminate or wood flooring. Do I need to be concerned about moisture coming through the slab? Is there a way to tell if the slab has a vapor barrier or insulation underneath?
If I add a vapor barrier (and possibly insulation) above the slab, where does the moisture go? It seems like it would move to the walls instead.
If part of the crawlspace is adjacent to the den and garage, does that present any problems with encapsulating the crawlspace in the future?
Thanks for any help you can provide.