Wait several minutes and use a large scrapper to remove the mastic.
Removing tile adhesive from plaster walls.
This can be accomplished using a pry bar to peel off the larger chunks.
Bathroom tile is installed to last applied to the wall with adhesive and topped by grout between the tiles to keep them in place.
Removing tile adhesive from drywall is not an impossible process.
When removing tile from drywall take care not to damage the wall underneath.
I have started by removing the tiles from the walls but the plasterboard is now a mess with patches lumps of tile adhesive still stuck to it.
Since not all will come off there will be an uneven layer of adhesive left behind.
How to remove ceramic tile glue from a wall.
If the adhesive is not cement based you could try sprinkling water to the wall to ease the scrapping process.
The use of the right tools and materials combined with some elbow grease will remove most tile adhesives from drywall.
How to remove bathroom tile without damaging the plaster walls.
Look for a formula that is either made for ceramic tile.
You will then have to pry off the leftover residue.
Apply some water to a small section of the adhesive.
All the the tiles have been removed by bolster chisel and as you will all know the bare plasterboard is now a mess and i need it to be clean before i can start putting the new tiles up.
Usually when you chisel the tiles off most of the thin set mortar will be removed with it.