Tile Moisture Barrier

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.

Tile moisture barrier.

X 1 5 mm premium silent underlayment for vinyl plank laminate hardwood and tile model 22491 125 00. There are a variety of underlayment types including foam and cork underlayment plywood hardboard and cement board. Nance carpet and rug versapad 180 sq. Some underlayments have a built in moisture barrier.

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. Acoustical underlayment w vapor barrier for luxury vinyl flooring 54 pack model qwlv100 2 430 00. Liquid waterproofing is an outstanding redundancy barrier to the tile installation and allows you to skip the plastic sheeting behind your substrate. Omit plastic when covering bare wood subfloors thereby allowing the subfloor to breathe.

In this case there is less breathability to encourage evaporation which ultimately could cause mold growth. 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.