Failed Topps Former Tray

[Daveyboy]

I've been asked to sort out a failed wetroom area where the grout keeps cracking. The tiler (not sure if he is as the tiling is appalling) cannot explain why it keeps cracking but give him his due he has tried and has paid out of his own pocket to try and put it right.

I've had a look at it and found two issues. The first is that there is a lot of flex in the tray when you stand on it, which will no doubt be the cause of the cracking (no fitting instructions on site). The second is the underfloor heating, which if it is over 100 watts, should not be fitted on a former tray (the client does not know if it is or not and no instructions to hand).

I've fitted a lot of former trays but never a Topps one. Does anyone know if they should have supports underneath them or can they be laid straight onto the joists? If straight onto the joists then the problem may be the joists themselves.

Also, do they have a watt restriction for underfloor heating? If they don't, then I won't have to rip up the whole floor, just the wet area..

 

[jay]

oh dear how long has he been tiling :yikes:

 

[Daveyboy]

oh dear how long has he been tiling :yikes:

Apparently a long time...although I've been told he doesn't answer his phone anymore when the builder tries to call him...I reckon this is one project that the builder is going to have to make a full refund on..

 

[jay]

yep scarry stuff chances are we will see more as times tighten thanks for pics:8: