undermount kitchen sink mounting issue

[gavinda]

can any plumbers/kitchen fitters please advise me before I lose my **** at my kitchen installer!!!

I had a quartz worktop installed with a Franke undermount sink a few years ago and it has just detatched from the worktop and is now held up by the waste pipe. I''ve done a quick 'google' and from what I can tell, the sink should have been held by some sort of mechanical fasteners, not just by the slicone beading I have discovered it to be held up with.

Could anyone advise me on the correct method that should have been followed so as i can decide what stance I take qith the installation company.

cheers,
gav

 

[ljrgas]

You answered the question yourself.
should really have bracket/clips but seen many sinks held on with silcone :/