Any of our vapor barrier types of products can be used in this application over the concrete slab.
Vapor barrier for carpet.
In some desert climates the soil 5 feet down is perfectly dry but not in ct.
A moisture barrier is installed right beneath your carpet so that if any liquid is spille d it will not seep through ti the floor base.
It will not only help you keep your carpet clean and dry but it will also protect the wood or cement underneath the carpet from becoming damaged.
This barrier can help keep some of the moisture from coming into contact with your carpet pad and carpeting so that you will not have some of the problems that are associated with moist floors in a basement.
If that path is blocked by a vapor barrier eventually the moisture side of the vb will reach equilibrium with the source of moisture.
There are a variety of underlayment types including foam and cork underlayment plywood hardboard and cement board.
If you are constructing a new home or renovating your old one it is always better to have a vapor barrier installed.
If there is no other way for the moisture under that flooring to escape then that area will become as wet as the soil 2 or 5 feet down.
I would recommend raven industries vaporblock 20 plus or the vaporblock plus 6 as two of the better ones since they also block out radon methane and voc s.
Future foam tempur material with spillsafe moisture barrier 7 16 in.