Replacing a tile hearth around wood stove
We are getting a new stove and so are replacing the tile hearth it will sit on. So, I am taking up the old tiles. Underneath them is the old mastic or mortar whatever it is called.
Can we just spread new mortar over the old and lay the tiles on top? Or do we need to actually chip all that old mortar away?
Underneath is particle board, which means it comes up just a little tiny bit at a time and makes for a huge job. Attaching a picture to explain better what I mean.
Any feedback or help for us? Thanks.