The core of the countertop deteriorating in front of the sink is a common issue with potential structural implications. If you feel under the countertop at your sink and it flakes or is raised and starts to fall apart, then most likely you have water leaking around the kitchen sink. Water exposure near sinks often leads to the rotting or delamination of countertop cores, compromising their integrity. Many of the cores of countertops are made of particle board which does not handle moisture well.

When installing a kitchen sink, plumbers’ putty should always be used for a drop-in sink installation. Silicone, in my opinion, will not take the place of plumbers’ putty.

If you are lucky, you can take the sink out after disconnecting all plumbing and electrical components and apply the plumber’s putty to the underside of the kitchen sink. Once you tighten the sink down, clean up the remaining amount, and you should have a good seal.

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