Should I install a vapor barrier under a LVT (Luxury Vinyl Tile) flooring material?
Existing home has an inordinate amount of moisture/water under the raised wood floor (two-story SFD structure).
Realizing that the moisture should be mitigated by possibly at least installing an impermeable moisture barrier at dirt, I am wondering (assuming owners do not elect to install mitigation in crawl space) if the floor assembly should be as follows?
Existing Plywood Subfloor
Vapor Barrier (6 mil poly)
Floating Click system LVT
Our flooring contractor mistakenly installed a particle board underlayment and used the Glue Down version of the LVT which is made by Moduelo. The PB appears to have swelled at the seams projecting through the finished flooring material. In my research Modeulo does not refer to any type of vapor barrier material as used in other products (foam roll) and refers us to http://www.rfci.com. Resilient Floor Covering Institute.
Link to product: https://www.ivcfloors.com/tropical-fruitwood-20852/
I would like to verify if the GBA Pros here agree some type of vapor barrier should be used within the floor system. Help…Bill
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