Remove Tile Mastic From Plaster Walls

Scrape the wall to remove any texture and to create a flat surface.

Remove tile mastic from plaster walls.

Once it s dried it s water resistant but brittle in strength. If you are applying it to mastic that is above wood flooring use rags instead. Removing thin set mortar. This adhesive is a portland cement product commonly used in wall and floor tiles.

Patch any holes or cracks with spackling compound and sand the entire surface with medium grit sandpaper. Then tap the tiles with a chisel starting in the middle and working your way out. Once it becomes soft scrape it off the surface with a putty knife. If you re only trying to replace 1 2 tiles because they re cracked use masking tape or duct tape to tape off the tiles you want to remove.

Plaster is waterproof and it bonds tenaciously to just about anything. Wipe the walls down and survey the area for any cracks holes or uneven areas. Follow the directions on the bottle for application. Apply a thin layer of mastic remover.

Once these two products are dry you can dissolve them by rubbing them with a wet sponge. Dissolve the tile adhesive which is also called mastic. Step 3 wipe some tile adhesive remover over the surface of the wall. Remove any remaining dust oils and grease from the wall with tsp tri sodium phosphate or an ammonia based cleanser.

If any adhesive gets stuck to the brush remove it by hand and continue until no more adhesive remains on the wall. Start at the far end of the room and work back to the door. Gently grind off thinset with an oscillating tool equipped with a. Once you get some of the tile pulled away use your chisel to get behind the tile and tap it sideways to remove the rest.

Scrape the surface of the adhesive with a stiff bristle brush. Load the mastic remover into a sprayer if possible or apply it to the top of the mastic with a mop. Usually the remover is applied to the remaining clumps of adhesive with a rag brush or sponge then left to sit for a few minutes. Sand the walls with sanding block to smooth it out lightly and remove any traces of mastic.

The quickest way is to use a commercial mastic remover. Vacuum to remove dust. Thinset is a cement based product and mastic resembles thick glue. The two most common wall tile adhesives are thinset and mastic.