Honestly, I’ve had the same thing happen. Pressure tests are helpful, but they’re not a crystal ball. Sometimes you get a false sense of security, especially with older copper or galvanized pipes. I think it’s because tiny flaws or corrosion can go undetected until the system’s under daily stress—like when people actually start using the water regularly. Drives me nuts, since a hidden leak can totally ruin finished walls or new flooring. I wish there was a more foolproof way to spot those “about to fail” spots, but so far, I just cross my fingers and budget extra for surprises.
“I wish there was a more foolproof way to spot those ‘about to fail’ spots, but so far, I just cross my fingers and budget extra for surprises.”
That’s the story of every remodel I’ve done with original pipes. Once found a pinhole leak in a wall that had apparently been “pressure tested” just fine—until someone took a shower and the thing turned into a sprinkler. I’ve started using those moisture sensors behind walls, but honestly, it feels like I’m just buying time. Pipes are like that one uncle who seems fine at the reunion, then suddenly needs a ride to urgent care...
I get the frustration, but I’m not totally convinced moisture sensors are worth the hassle unless you’ve got a history of leaks in a specific spot. I’ve had better luck just replacing the worst runs when I open up a wall, even if they “look fine.” Sometimes it feels like overkill, but honestly, old pipes are just ticking time bombs. Ever tried using a borescope to check inside before deciding? It’s not perfect, but it’s caught a few disasters-in-waiting for me.
“old pipes are just ticking time bombs. Ever tried using a borescope to check inside before deciding?”
- Had a similar debate with myself last year during a flip. Pipes looked fine on the outside, but the house was built in the late 60s... you know how that goes.
- Tried the borescope trick—honestly? Mixed results. Caught some buildup, but missed a weak joint that blew two weeks after closing up the wall. Not fun.
- I get what you mean about moisture sensors feeling like overkill. I put one under a laundry room once and it just kept giving false alarms from condensation. Drove me nuts.
- My rule now: if I’m already opening up a wall and the pipes are pushing 40-50 years, I just swap them out. It’s not the cheapest move, but it beats dealing with water damage later.
- Curious if anyone’s had luck with those ultrasonic thickness gauges? Heard they can spot thinning in copper but never tried one myself.
Sometimes I wonder if we overthink it or if we’re just learning from all the messes we’ve cleaned up...
Totally get the “just swap them out” approach. I’ve tried being clever with inspections and gadgets, but there’s always that nagging doubt—especially with pipes from the 60s or 70s.
That’s my thinking too. The cost hurts, but it’s nothing compared to a hidden leak wrecking your new drywall. And yeah, moisture sensors are more hassle than help in my experience—false alarms everywhere. Sometimes the old-school gut check is still the best tool.“if I’m already opening up a wall and the pipes are pushing 40-50 years, I just swap them out.”