overloading walls tile on tile

[kilty55]

just a thought,regarding to my last post on too much weight on walls,,if your asked to tile on tile say an entire bathroom how do you know/check what the walls are made of? and how do you calculate the weight of the previous tiles that are already on there to work out your safe weight going on the wall?

[Fekin]

I wouldn't tile on tile anyway due to not knowing exactly what the substrat is like but many would do.
I'd do a floor maybe but not walls now... though I have done in the past.

Most you can do is tap all the tiles and see if any sound hollow meaning theres not much adhesive behind them and more chance of them falling away with the weight of new tiles.

Only way you could know what the walls was made of would be to remove a tile and have a look I guess.

If you we're to tile on tile just try and stagger the new tiles over a couple of the old ones and use a cement addy.

[bal]

Id ave thought if your putting a similar ceramic on ceramic youd get away with tile ontop of tile, but if you were putting a 60 x40 trav or most stone ontop youd have to assess the job totally.

[deanotile]

In my opinion m8 it is better to remove the old tiles anyway as there are to many unknowns. The only time I will tile on tile is if the original tiles are fixed well and the new tiles are not large format.

[whitebeam]

Hi Kilty, Usually by the age of the house determines the kind of plaster finish on the walls. You can say for definiet that if the house is over 60 years old odds on it will be lime morter, After that it be sand/cement with sirapite. Dry linning was being used about 35years ago to now. Float and set, Gypsum products was also used from about nearly 40 years ago. All aprox