Massive problem involving chipboard flooring and underfloor heating.

[Flintstone]

My opinion on the matter is it is 100% your fault. Yes the plumber turned the heating on, but if you knew what you were doing you would have stopped him. Your doing the tiling you dictate what is done for the job to be done correctly. If I listened to plumbers and clients, I'd be doing things the wrong way half the time. Put your hands up and get it sorted out.

 

[Stan Rogers]

I wasn't actually there when he turned it on, he was doing it in the evenings and weekends as a foreigner for his mate. We did one day tiling came in the next and the heating was on. Granted at that point I should have known and tools down maybe. My customer was always very quick to remind me also that the plumber works on posh new builds with this set up all the time. Granted again I should have argued the toss.

 

[acaciaguy]

It can often be last man to work gets the blame. With finishing trades like tiling you have to be so careful to control everything. If you can’t. Walk. Sorry for your situation.

 

[Steve6690]

I think your only way out of this is to find the tiler who originally quoted and ask him what he advised the client was the correct method. He might be disinclined to help you though. It would help you prove that he was advised by a competent person, completely ignored that advice and then hired someone he knew was unqualified to carry out the work, according to instructions given by him. All to save a few quid.
Not saying you'd be found completely blameless, but your liability might be significantly reduced. The bloke sounds like an idiot tbh.

 

[ashley600]

As above really. Sounds like the customer didn't want to pay fot the prep work which would of given the floor the strength it needed to be tiled.

For all the you know the client was told the proper way to prep a floor by the tile shop but decided not to bother and went with a half assed as maybe it would work.