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Question DetailsAsked on 9/25/2015

Hello, I had my kitchen redone and the granite countertop overlays about 1inch over the sink. Is this normal?

Hello, my new granite countertop overlays about 1 inch in of my under mount sink on both sides (left and right). The installer says that is the new rules now for under mount sinks. So that you can understand, if my sink is square and measures 4X4 - once the granite top was installed my sink is now only 4X2 because the granite goes over the sink (it is not flush).
I believe this would not sanitary because as water gets splashed while you are washing dishes things will can stick to the bottom of that 1inch that is overlays over the sink! Please help!!!!!

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Actually, your reduction is not as drastic as you said with the 4x4 to 4x2 example - you are probably talking something like 18x36" reduced to 16x34" - but macht nicht.


Here is a link to a similar question with a number of responses at another site -


http://ths.gardenweb.com/discussions/...


I think he is giving you a line of bull - not only is the hole in the sink taking away usable sink size, and VERY likely to give you an unwanted mold farm under the lip, but the overhanging lip also is likely to cause disk breakage as you lift dishes out of the sink and clip the edge of the granite - which is also likely to chip over time because of this. I would challenge him, to show you a law, regulation, or building code requirement that says this is "the new rules".


I bet he is trying to do this to avoid edge cracking in countertops, because so many of the undermount sinks these days (especially some of the chinese and INdia junk that use mounting bolts right through the sing edge) have mounting hardware that requires drilling mounting hoes real close to the edge of the opening, so induces cracking of the countertop. The solution - move the holes further back and fabricate or buy longer mounting brackets so the holes are a minimum of 2-4 inches from the edge, depending on stone type and thickness. Personally, I do not like counting on the brackets to hold the weight at all - I prefer using the manufacturer brackets for alignment and installation, but then putting in brackets or wood cradles under the sink, mounted to the cabinets rather than the countertop, to actually carry the weight of the full sink. And as for using only an adhesive to undermount sinks - an invitation to trouble in my opinion.


I am also willing to bet he did not machine in a drip edge on the underside of the counteartop to prevent the water from wicking back in underneath - should have a groove cut into it about 1/4-1/2" back from the edge to stop wicking and force water getting there to drip off into the sink.


Sounds to me like he cut it the wrong size, or forgot to ask you (and explained the consequences per above link) whether you wanted sink or overhang reveal and how much. Of course, this issue should have been addressed while selecting the countertop opening configuration and sink size, not first be coming up now.


As to the fix - some larger stone countertop fabricator/installation contractors can recut the opening in-place (after removing the sink), others will need to take it back out and to the shop to remill it, then bring back to reinstall and put the sink back in, so you are talking a good several hundred dollars worth of cost to him, so he will certainly resist redoing it.


But in my opinion, leaving that kind of overhang without specific customer preauthorization is unprofessional, and more likely a result of his fabrication guy making a mis-measurement than any fault of yours. Hopefully you have not final paid him, because if you did that there is the implication the job is done and you had accepted the work as done.

Answered 4 years ago by LCD




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