DIY Bandit | Homeowner Proven DIY

The Water's Back On — Now the Real Test Begins | Kitchen Leak Disaster

Picking up right where Part 2 left off: new valve threaded in, new pipe seated in the wall, and my wife standing at the street-side shutoff waiting for the word. Here's what actually happened the moment the water came back on, how I confirmed everything was actually leak-free, and where things stand with the water-damaged cabinet underneath.

Quick Facts

• Project: Turning the water main back on, testing all connections for leaks, hooking up the dishwasher and hot water faucet supply lines, and starting to dry out the saturated cabinet
• Difficulty: Easy to moderate — mostly patience and careful observation, plus basic hand-tool connections
• Time: Roughly an hour for testing and hookups, then several days of ongoing drying
• Main challenge: Confirming there were genuinely no leaks before considering this done, and being patient with a drying process that takes way longer than it looks
• Best for: Someone who's already done the pipe and valve work (see Part 2) and is ready to test, connect, and start drying
• Call a professional when: If you can't pin down where a leak is actually coming from, or if wood moisture readings stay stubbornly high after days of active drying — that's when it's worth bringing in a restoration pro instead of continuing to guess.

The Situation

Coming into this stage, the new dual shutoff valve and new copper pipe were installed and threaded into the wall. The real test hadn't happened yet — turning the main water supply back on to the house and finding out, for better or worse, whether that work actually held.

⚠️ Before You Start

I'm not a plumber, and everything here is what I actually did, not professional guidance. One thing worth repeating from the video: if your outlets don't have covers on them, get that fixed before you do any work involving water nearby. Water and exposed electrical outlets should never be anywhere near each other.

What I Used

• Bucket and towel (for the inevitable splash)
• Box fan
• Moisture meter
• Small dehumidifier, sized to fit inside the cabinet
• Braided supply lines (dishwasher line and hot water faucet line)
• Small wrench for snugging the supply line fittings

What I Did

1. Turned the water main back on, slowly. My wife was at the street-side shutoff, with the kids relaying instructions back and forth between us.

2. Water splashed out immediately. The quarter-turn valve was actually open, not closed. On this particular valve model, you can't see the little ball inside the inlet to confirm whether it's open or closed the way you can on most valves — I was guessing 50/50, and guessed wrong.

3. Cleaned up the splash with the bucket and towel. No real harm done, just a mess to mop up.

4. Left the main on and deliberately held off on connecting the inlets. Before hooking up the dishwasher and faucet supply lines, I wiped down the pipe dope on the copper-to-elbow and valve-to-copper junctions and watched for beads forming. Doing this first meant that if a leak showed up, I'd know it was coming from that pipe work specifically, and not from the inlet connections I hadn't made yet.

5. Confirmed dry after a few minutes of watching. No beads, no drips at either junction.

6. Hand-tightened the two inlet fittings. These screw directly onto metal threads — no tape or pipe dope needed here, unlike the pipe connections in Part 2. One line goes to the dishwasher, the other supplies hot water only to the faucet.

7. Snugged both fittings with a small wrench. Firm and secure, but not overtightened.

8. Turned on the valves feeding both braided supply lines.

9. Ran the water and checked it. It came out noticeably brown at first — let it run and clear out. Also noticed the hot water flow was running low, which is a separate issue to deal with later.

10. Checked every connection again for leaks. Everything came back dry.

11. Started drying out the cabinet with a box fan. The cabinet had been thoroughly soaked and saturated from the original leak. I pointed a box fan at it on high speed and let it run continuously.

12. Used a moisture meter after about 20 hours of fan time. The wood felt dry to the touch by then, but "feels dry" and "is dry" aren't the same thing — the meter is the objective measurement. I took a baseline reading on normal, unaffected wood, then compared it to the wet wood: still reading 24%.

13. Planned the next drying phase. Over the following days, a small dehumidifier goes inside the cabinet, cracked slightly rather than sealed shut since the unit still needs airflow to work. Moisture levels get checked daily until that number comes down.