Undermount sink

I am about to build a cabinet for the bathroom. My wife jumped the gun and bought an undermount sink but wants a laminate countertop. How is the edge of the cutout sealed?
 
We had an undermouted sink in the kitchen, under a concrete countertop, wife hated it. It was only about 5 years old, was in the house when we bought it. We tore it all out and put in Formica countertop with a top mounted cultured granite sink, much nicer, and lower for my short wife!
 
I can't imagine it working too well with a laminate counter top. All it takes is a small leak for trouble to start. Either your countertop plywood (or whatever you use) will start to delaminate or the laminate will pull away. You'd have to have a seam somewhere too. Can't see it looking good for long.
 
Just curious what you didn't like about the concrete with undermount? I make concrete countertops so I'm always curious as to what people think.

Thanks,

Matt
 
(quoted from post at 15:03:13 07/17/13) Just curious what you didn't like about the concrete with undermount? I make concrete countertops so I'm always curious as to what people think.

Thanks,

Matt
hat someone else thinks: concrete, granite & such hard materials with undermount sink gives a perfect hard rim for chipping all of wife's china. Over/top mount SS rim is much more forgiving. 2 cents.
 
talk her into a solid countertop, Corian or similar isn't a budget buster. Or, toss the undermount sink and use a top mount sink in a laminate.
 
The cabinets were a standard height, then there was 3/4 plywood screwed to that, with the sink cut into it. Then the 2" concrete countertop was on top of that with the sink flange sandwiched in between. This put the top of the countertop almost 2" higher than standard, and it was a deep sink, very awkward! You really can't make the cabinets any shorter or a dishwasher wouldn't fit. The person that cast the concrete put the reinforcing right where the plumbers drilled there holes for the faucet, so it was severely weakened, very poorly planed! Maybe if it was all well planed it would be ok.
 
I disagree, if you band the edge with plastic laminate and use a premium contact adhesive it will not be a problem at all.
When I worked at John Deere in the factory they installed plastic laminate counter tops with undermount sinks in all of the washrooms. Those had 500 guys washing up everyday on 3 shifts and they never failed at the laminate edge. The sinks were always wet
Make your self a 1/2" plywood template of the sink cut out.careful to make it even and smooth. Rough cut the hole with a jig saw, and then use a router with a template bit and a rub collar or bearing to run on your template
Pick up some PVC edge banding from a local cabinet shop glue this around the perimeter, overlapping at each end.Then take a sharp chisel and hit where you want the seam usually towards the front of the sink. This will give you an invisible water tite seam.
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Just my 3 cents worth, Martin
 
Twenty five years of residential construction exp. working on plenty of bath remodels and repairs are enough to convince me that I would never install that combination in my own bathroom. What Fred said...
 

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