Do not sand to smooth some texture will help the thinset mortar bond to the wall better but too much texture could create an uneven surface.
Simple mat on textured wall.
Simplemat can be used to tile over many household surfaces.
Before installing be sure to wipe walls counters and backs of tile or stone with a damp sponge and allow to dry.
No you can not apply simple mat tile adhesive to textured sheet rock.
The back of the mat has a flat adhesive which bonds to the backsplash wall countertop or shower wall.
Set countertops from front to back set backsplashes and shower walls from bottom up.
For shower walls see preparation instructions.
Set countertop tiles prior to setting backsplash tiles.
Simplemat replaces traditional thin set mortar or mastic adhesive.
Simplemat is the quickest easiest and cleanest way to install tile on countertops and backsplashes.
When texturing a wall you can either add physical texture or create a faux finish with paint tools and supplies that mimics the look of a textured wall.
Both wall styles are attractive and can hide small defects but physical texture on the wall is denser adds a layer of protection and can dampen sound.
The front side has a raised adhesive which bonds to tile or stone.
Use either a hand held sander or an electric sander.
Simplemat is a double sided adhesive mat specifically designed for bonding tile to countertops backsplashes or shower walls.
The tile is directly pressed onto the adhesive and once applied is ready to grout immediately.