Wet walls blowing tiles

[Sanke]

Some tiles have fallen off above the bath You can see the addy that was used (stilll see trowel marks, builders didnt use much) and nothing on the back of the tiles Should the wall have been heavily troweled and then the tiles back buttered ?

 

[Bartlett]

Sounds like a poor job was done. Open time on the adhesive was probably too long if none is on the back of the tile, ie, addy on the wall too long prior to tiles being stuck. Tiles may need need buttering if they have deep indents but not necessarily.
I would go with the advice already on here; start again with new p/board.

 

[White Room]

Some tiles have fallen off above the bath You can see the addy that was used (stilll see trowel marks, builders didnt use much) and nothing on the back of the tiles Should the wall have been heavily troweled and then the tiles back buttered ?

Thats why I use powdered addy, I find when tiles are put on with tubbed addy they need to be work into the addy if they ar'nt they can delaminate.

 

[Colour Republic]

Hi all
Looked at a job today Customers ensuite shower has been leaking for quite a while and the whole wall is now soaked On the opposite side of the wall above the bath, tiles have blown off (some missing and some moving when you touch them).
Once the leak is fixed and the wall is dry what would you advise doing re replacing the tiles Remove all loose and refix or remove all tiles prep the wall & tile again ????

Take down those loose tiles sooner rather than later, you wouldn't want them on your head while having a relaxing soak