I still agree with Brian because I also have done it with no catastrophic results,I do this not at my own doing but usually to help the clients who can't afford to start from fresh,lets face it i,it is expensive.Now this doesn't happen all the time,in 27yrs I may have done it six times,always to help the client who just can't afford it,and yes it's nice to be so rich that you can walk into a place and if you don't like it say no I'm not doing it,but times were different twenty years ago,a job was a job you play the hand your dealt to the best of your capabilities,when you have 5,6,7or 8 mouths to feed you sometimes take what you can get,Everytime I did a
tile on
tile my clients were more than happy with my work and the money I saved them,like I said,twenty years ago the
rules and codes weren't quite as strict,And another point,I've read a lot of tiling books over the years and most of them say it might not be the best way but it can be done,to many greenhorns on the goody two shoes wagon,chin up Brian,don't quit,go with what works for you.