There are a variety of underlayment types including foam and cork underlayment plywood hardboard and cement board.
Tile moisture barrier.
Some underlayments have a built in moisture barrier.
Liquid waterproofing is an outstanding redundancy barrier to the tile installation and allows you to skip the plastic sheeting behind your substrate.
If moisture reaches your vapor barrier behind the tile substrate it should have the opportunity to evaporate this process is hindered when a second vapor barrier is applied or installed to the outside of the tile substrate.
These are typically used for floating floor applications.
Need help deciding on underlayment type.
Omit plastic when covering bare wood subfloors thereby allowing the subfloor to breathe.
Acoustical underlayment w vapor barrier for luxury vinyl flooring 54 pack model qwlv100 2 430 00.
Nance carpet and rug versapad 180 sq.
Whether you re laying tile hardwood flooring or laminate flooring underlayment is an essential moisture barrier that also provides insulation and sound absorption.
I still recommend installing a vapor barrier behind the substrate and if you plan on installing a steam generator you will definitely need a vapor barrier.