Step 7 · Test for Leaks and Final Cleanup

This is the step people usually slow down on. Go finger-tight first, then a quarter turn. No rush — replay the clip whenever it helps.

The final step is to check your work for leaks. Place a dry towel or paper towel under the entire drain assembly. Turn on the cold water and let it run for a minute, carefully checking every joint and connection point for drips. Then, turn on the hot water and repeat the process, as heat can sometimes expose a loose connection. For a thorough test, close the sink stoppers and fill both sink basins about halfway with water. Then, release the stoppers simultaneously to send a large volume of water through the new plumbing. Inspect carefully for any leaks. If you find a leak, it is likely at a slip nut connection; try tightening it another quarter-turn. Once you are confident there are no leaks, turn the circuit breaker back on. Clean up your tools, remove the bucket and towels, and return items to the cabinet.