Honestly, I’d take a slow drip over a hidden leak any day, even if it means getting a face full of dust bunnies under the sink. At least with a visible drip, you’ve got a shot at catching it before it turns into a full-blown disaster. Hidden leaks, though... those are sneaky. By the time you spot the water stain or that musty smell, you’re already looking at drywall repair and maybe even some mold remediation if you’re unlucky.
One thing I always tell folks—don’t ignore those tiny puddles or damp spots around connections. Sometimes it’s just condensation, but sometimes it’s the start of something bigger. I’ve seen folks shrug off a little moisture, only to end up with warped cabinets and ruined flooring down the line. Not fun.
If you’re crawling under there anyway, might as well check all the fittings and give everything a gentle tug. Just don’t overtighten—learned that one the hard way when I cracked an old valve. It’s always a balance between being thorough and not making things worse...
If you’re crawling under there anyway, might as well check all the fittings and give everything a gentle tug. Just don’t overtighten—learned that one the hard way when I cracked an old valve.
That’s a good tip about not overtightening. I actually did that with a compression fitting on my first week in this house—thought I was being “thorough” but ended up with a tiny spray instead of a drip. Still not sure how tight is "tight enough" though... Is there some trick to knowing when to stop, or is it just trial and error?
Still not sure how tight is "tight enough" though... Is there some trick to knowing when to stop, or is it just trial and error?
Honestly, it’s less trial and error than people think. With compression fittings, you want it snug, then maybe a quarter turn more—don’t muscle it. If you’re using two wrenches and really cranking, that’s too much. I’ve seen more leaks from overtightening than under. Hand tight, then a little extra, and check for drips after turning the water back on. If it’s still leaking, THEN give it another nudge.
Leaks from overtightening can be a pain, but I wouldn’t downplay the risk of under-tightening either. I’ve seen plenty of slow drips that looked harmless at first, but ended up causing way more damage over time than a connection that was a bit too snug. That “hand tight plus a quarter turn” guideline works most of the time, but honestly, every fitting feels a little different. Sometimes you just have to trust your gut and keep an eye on it for a day or two... water has a way of finding the smallest gaps.
I get what you’re saying about under-tightening—had a job last month where a tiny drip from a compression fitting went unnoticed behind a vanity for weeks. By the time we found it, the cabinet base was basically mush. Thing is, overtightening can be just as sneaky. I’ve seen brass nuts split clean in half from too much muscle, and then you’re dealing with a full-on spray instead of a drip. Honestly, I wish there was a foolproof way to know when it’s “just right,” but it really does come down to feel and experience. Water always wins if you give it enough time...