|
I don't think you can or should patch cracked mud beds, but that's just me. The antifracture membrane idea allows for the cracks to still be there, but the tile would be isolated from the movement.
A crack that goes clean through the med and allows visible movement between one side and the other would warrent a tear out. A crack with no visible movement (i.e from a person walking from one side to the other), could be membraned. This is not a national standard, just my opinion.
Fill dings and gouges with thinset.
Best method would be to place a new mud bed.
|