Supporting a sink with two bowls (1.5) ?

[Spinny]

Our stainless steel sink is currently supported at each end only. I notice it is sagging at the divider between the main bowl and side bowl under it's own weight. Doesn't seem good.

Should such sinks be supported underneath between the two bowls ? (We will not be having the worktop over the divider)

[Mr Punter]

A photo would be useful.  Mostly sinks are supported all round, either by kitchen unit carcase or by worktop.

[Spinny]

Photo.

It is Franke brand. I don't find it too impressive that they manufacture a sink that deforms under it's own weight when supported at the ends TBH.

[crispy_wafer]

when sat into a worktop and supported on all 4 edges it'll be fine.

[Nestor]

This is an undermount sink, worktop above ?

I fitted a couple of timber horizontals to support the long sides as was fitting a concrete worktop.

[Spinny]

Yes, undermount sink, quartz going on top.

I notice the sink has a couple of bracing pieces attached across the bowls at the side, but still sags under it's own weight.

 

I think the fitter's idea was it could be adjusted forward/backwards as necessary., but fill the bowls with water and what would happen ?

[Nickfromwales]

36 minutes ago, Spinny said:

Yes, undermount sink, quartz going on top.

I notice the sink has a couple of bracing pieces attached across the bowls at the side, but still sags under it's own weight.

 

I think the fitter's idea was it could be adjusted forward/backwards as necessary., but fill the bowls with water and what would happen ?

Your quartz fitters should be pre-aligned to walk through this ‘issue’?  

 

They make small cuts in the underside of the quartz to accept stainless L section ‘tabs’. These are done and then the quartz cleaned, dusted and decontaminated. 
 

Then clear CT1 (NOT SILICONE) is applied to the mating surfaces of the stainless sink, where it marries up with the underside of the quartz. This should be with the quartz upside down and the sink sat on top. 
 

Once aligned the quartz fitters should be making up a mix of 2-part resin bond to set the tabs into the slots, maybe 6 or 8 of them for your sink. This takes no longer than 15-20 mins to cure fully, and then you’ll need a stick of Semtex to get that bowl back off.

 

Very standard stuff, shocking that they’ve not explained this process to you comprehensively….