Yeah, I hear you—patch jobs are tempting when you’re staring down a wall you really don’t want to open up. But once you’ve got rust or those green stains, it’s like the tip of the iceberg. I’ve seen folks spend more time chasing leaks than they would’ve just replacing the run in the first place. You nailed it with checking both directions—corrosion loves to travel where you can’t see it. It’s never fun, but dealing with water damage and mold later is way worse. Good call on salvaging copper too, that stuff’s not cheap these days...
Yeah, patching feels like the easy way out until you’re back under the sink a month later with towels everywhere. I get wanting to avoid tearing into walls, but once you see green or rust, it’s usually game over for that section. I tried to stretch some old copper lines in my last place—ended up with pinhole leaks popping up in random spots. Total waste of time and water.
Honestly, if you’re seeing corrosion or stains, swapping out the whole run is just less hassle long-term. Plus, you can recycle the old copper and offset some of the cost. Not cheap, but better than dealing with mold or a big water bill from a hidden leak. If you’re worried about waste, PEX is easier to install and uses less material overall. Just my two cents... sometimes ripping the band-aid off is the greener move.
Title: When is it time to swap out old pipes?
Yeah, I learned this the hard way too. When we moved in, I thought I could just patch a little leak under the bathroom sink—looked like a tiny green spot, no big deal. Two weeks later, water started dripping from the ceiling below. Turns out that one spot was just the tip of the iceberg... ended up chasing leaks for months before finally biting the bullet and replacing a whole section.
I get wanting to avoid tearing things up, but honestly, once you see that corrosion or those weird stains, it’s like playing whack-a-mole. The thing that surprised me was how much easier PEX was to work with compared to copper—less mess, fewer joints to worry about leaking down the line. Only thing I’d say is double-check your local code; some places are picky about what you can use behind walls.
Recycling the old copper helped offset costs a bit, but yeah, it still stings upfront. At least now I sleep better not worrying about waking up to a soggy floor again.
once you see that corrosion or those weird stains, it’s like playing whack-a-mole
That’s been my experience too, especially in older buildings. The first sign of pinhole leaks or greenish discoloration is usually just the beginning. It’s tempting to keep patching, but in my rentals, I’ve found it’s more cost-effective long term to replace whole runs if the pipes are showing their age. PEX is a game changer, but I’d add—if you’re dealing with really old galvanized lines, don’t wait for leaks. Low pressure and rusty water are red flags that the whole system’s on borrowed time.
I get the temptation to just patch things up, but honestly, after dealing with a couple of surprise leaks in my crawlspace, I’m not convinced it’s worth the stress. I swapped to PEX in half my house and haven’t looked back. Curious—has anyone actually regretted doing a full repipe? Or is there some hidden downside I’m missing? Sometimes I wonder if I jumped the gun, but the peace of mind is hard to beat...
