I am looking for advice on how to handle the subfloor with my basement remodel. I am planning to have the furnace and hot water heater in a closet in the finished area of the basement. I am planning to use the Dricore florring system down there as a subfloor to act as a vapor barrier but my issue is what do I do about the closet where the furnace will be? By code and possibly by weight you can't put furnace and hot water heater on the dricore, and I feel like that all the moisture from the rest of the basement will then be funneled under the dricore directly into the closet where the furnace is negating having any vapor barrier at all.
I would not even worry about this. First off, if the basement slab was made correctly, then there should be a vapor barrier underneath the concrete. This will take care of most moisture problems.
However, no matter if you do or do not have a barrier under the slab, having a furnace and water heater contained within a closet space will keep that portion of the slab dry. Whatever small amount of moisture could come through the slab will be dried by the heat and air flow of both those units.
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