The thermal camera thing intrigues me too, but I wonder if it really picks up small leaks or just shows you where your insulation is terrible.
I’ve actually used a thermal camera a few times, and it’s not just a gimmick. It won’t show you the water itself, but it’ll pick up on the temperature difference where moisture is evaporating behind the wall. That said, you need to know what you’re looking at—sometimes it’s just a cold draft or missing insulation, like you said. I’ve found a couple slow leaks this way, but it’s not foolproof.
Honestly, I wouldn’t trust the “poke test” or cheap meters for anything serious. If you miss a leak, you’re looking at mold and way bigger repairs down the line. I’d rather spend a bit more upfront than deal with tenants complaining about musty smells and warped floors. Sometimes old-school works, but with water issues, I don’t take chances anymore.
If you miss a leak, you’re looking at mold and way bigger repairs down the line.
That’s the part that gets me—once you’ve seen what a slow leak can do behind a wall, you start getting a bit paranoid. I remember pulling out some drywall in a rental and finding black mold everywhere, just from a tiny drip under the sink. The owner thought it was “just condensation.” Ever since then, I’m way more cautious. Those thermal cameras are handy, but yeah, you gotta know what you’re seeing or it’s easy to chase the wrong problem.
Honestly, I used to think a little drip was no big deal until I had to replace an entire section of subfloor in my bathroom. That “just condensation” excuse is wild—water doesn’t care what you call it, it’ll wreck stuff either way. Thermal cameras are cool, but I’ve chased phantom leaks more than once because the readings can be weird if you’re not careful. Sometimes, nothing beats just getting in there and checking by hand.
I used to think a slow drip under the kitchen sink was just annoying, not urgent. Figured I’d get to it “next weekend.” Fast forward a couple months, and I found out the hard way that particle board cabinets soak up water like a sponge. By the time I noticed the bottom panel was soft, it was too late—had to pull everything out and replace it. Not cheap, and definitely not how I wanted to spend my Saturday.
I get what you mean about thermal cameras. I borrowed one from a friend once, thinking I’d be all high-tech about finding leaks. Ended up chasing cold spots that turned out to be nothing more than drafts from a poorly sealed window. Sometimes, just feeling around for dampness or checking for that musty smell is more reliable than any gadget.
Condensation vs. leak... yeah, water doesn’t care where it comes from. If you see moisture where it shouldn’t be, it’s probably worth dealing with sooner rather than later.
Ever notice how a tiny drip can somehow end up warping the whole cabinet base? I’ve had similar issues, and it’s wild how fast particle board just gives up.
Do you think there’s a good way to tell if it’s just condensation or a real leak without tearing everything apart? Or is it always a bit of a gamble?“Sometimes, just feeling around for dampness or checking for that musty smell is more reliable than any gadget.”
