Sand the wall with 80 to 120 grit sandpaper on an.
Tiling a shower wall over drywall.
Traditional cement backer boards and fiber boards require some type of moisture barrier to be.
The wedi board wedi shower system includes special bonding agents referred to as wedi caulk though is much more than caulk that waterproofs the seams in the corners as well as the joints where the 3 5 board pieces join together.
Compare this to the common practice of tiling over drywall and you get the idea that you have a totally different shower by using a product that is meant to function in the shower.
You can rough up the painted surface which allows the mastic or thin set mortar especially those designed for painted drywall to adhere.
Your shower surround keeps water from coming into contact with the wall behind it.
For most shower walls the drywall installed in the home during the building phase is cut off at the.