Do I replace countertop to install under counter sink?

3/7/2016 at 10:18:32 PM

You have to change the counter as well!

3/7/2016 at 10:34:21 PM

I have never installed an under-the-counter sink. I would assume that you have a granite counter top, or one made of a material that is solid right through, such as concrete, soapstone, or one of the many artificial stone looking counter tops. If so, is the hole for the sink nicely cut? If your counter top is plywood or particle board, an under-the-couner sink would be out of the question. I would also assume that an under-the-couner sink must have a precise template for the opening that needs to be an exact size and shape for the sink to be installed properly. Unless you opening and your sink are an exact match, move on to something else. I have seen beautiful counter tops, where the opening for the sink was a total hack job. But this would never have been seen if the sink is a top mount type. If this is the case with yours, just get a sink that installs from above.

Sorry I can't be more help.

3/7/2016 at 10:37:10 PM

Yes. You have to replace the countertop if you want to install an undermount sink. Because they do not polish the sink cutout when installed the top mount sink, which is rough surface still.

3/7/2016 at 11:08:22 PM

DO NOT install and under mount sink with an arborvitae/Formica countertop! Undermounts are only to be used with either granite/Marble or Quartz countertops. You can also use them with composite as well.

If you already have a granite countertop, then you would unfortunately have to replace it if you wanted under mount, as they do not polish the sink cut out.

3/10/2016 at 8:43:12 AM

No you must use granite or quartz.

4/24/2016 at 12:07:48 PM

Hi Karim,

Yes, but not easily or cheaply! Better yet is to sell the old countertop and put that money towards buying a new countertop with an under mount sink.

If you have stone or a solid surface countertop a willing supplier would have to take a look at your sink cutout and determine what under mount sink options are available. It's possible but rare that this works.

If you have laminate you can install an under mount sink using a Karran sink however the costs are high and it needs to be factory installed. You would be hard pressed to find a supplier that would remove your existing laminate to install an under mount sink for you.

As an alternative, you may find it best to buy a sink with a low lip profile. They look higher end and give the feel of an under mount sink.

Good luck Karim!