Sink cabinets are one of the most overlooked areas where moisture can accumulate—and mold can thrive. Small leaks, condensation on plumbing, or spills from under-sink storage can go unnoticed for weeks or even months.

Watch for signs like:

• Swollen or warped cabinet floors
• Musty smells under the sink
• Staining or discoloration around pipes

Best Practices:

• Inspect under sinks regularly—feel for dampness, especially around shutoff valves and drainpipes
• Install a water tray designed to catch and contain water in the event of a leak—these trays act as a first line of defense, helping prevent water damage and mold
• Line the cabinet floor with a washable, waterproof mat for added protection
• Store only lightweight, non-leaking items under the sink to avoid spills or damage
• Place a small leak alarm sensor in each sink cabinet for early warning if moisture is detected

A quick monthly check and a simple tray can go a long way toward preventing long-term moisture issues in one of your home’s most vulnerable areas.