Tile Moisture Barrier

Some underlayments have a built in moisture barrier.
Tile moisture barrier. Omit plastic when covering bare wood subfloors thereby allowing the subfloor to breathe. Nance carpet and rug versapad 180 sq. Floating floor installations when installing laminate or other floating floors over cement vct ceramic tiles or kitchen vinyl use 6 mil poly sheeting plastic as the moisture barrier. These are typically used for floating floor applications.
Liquid waterproofing is an outstanding redundancy barrier to the tile installation and allows you to skip the plastic sheeting behind your substrate. 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. X 1 5 mm premium silent underlayment for vinyl plank laminate hardwood and tile model 22491 125 00. Acoustical underlayment w vapor barrier for luxury vinyl flooring 54 pack model qwlv100 2 430 00.
Need help deciding on underlayment type. 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.