Step 8 · Testing for Leaks

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.

This is the most important step. Go back to the main water shutoff valve and turn it on very slowly. This prevents a sudden, high-pressure surge (water hammer) that could damage fittings. As the pipes fill, listen for any unusual noises. Return to the access panel with a powerful flashlight and a dry paper towel. Meticulously inspect every single connection you made: where the hot and cold supply lines connect to the faucet, the hose to the spout, and the sprayer hose connection. Run the dry paper towel around each joint to reveal even the smallest, slowest drip. Turn the faucet handles on and let water run through the spout and sprayer, then re-check all connections while the system is under pressure. If you find a leak, turn the main water off and gently tighten the leaking connection (about an 1/8 turn) before testing again.