D
Dumbo
Thats the thing I recommended it they don't want to do it but want me to take liability so no that basis I take it you wouldn't Tile itI recommend it and explain the benefits but if the customer doesn't want to pay then I have no problem fitting porcelain without. If there are problems down the line then I've covered myself. If you had a problem with tiles cracking and tell your customer afterwards that there's a product that could have prevented it you'd look a bit of an idiot