One pinhole in old copper usually means there’s more corrosion lurking. Patch jobs are fine for emergencies, but if you’re seeing more than one in a year, it’s probably time to think bigger.
Couldn’t agree more with this. I used to patch every little leak in my old copper lines, thinking I was saving money, but after the third pinhole in six months, it was clear I was just delaying the inevitable. Here’s how I look at it now:
1. If you’re getting leaks in different spots, especially on horizontal runs, that’s a red flag. One-off leaks near joints or from physical damage are one thing, but random pinholes? That’s systemic.
2. Check your water pressure and quality. High pressure or acidic water will eat pipes faster. If you’ve got green stains under fixtures or blue-green water, that’s another sign.
3. When you do swap, map out your system first. I found a couple of dead-end runs that didn’t even need replacing because they weren’t used anymore.
4. PEX is great for DIY, but yeah, those crimp rings can be finicky if you don’t get them just right. I’d still take it over sweating copper any day.
Epoxy lining... I’ve seen it flake too, especially if the pipes are already rough inside. For me, it’s a band-aid at best.
Bottom line: if you’re patching more than fixing, it’s probably time to bite the bullet and replace. It hurts up front but saves a ton of headaches down the road.
Bottom line: if you’re patching more than fixing, it’s probably time to bite the bullet and replace. It hurts up front but saves a ton of headaches down the road.
Couldn’t have said it better. I used to think I was being clever, running around with a torch and a handful of couplings every time something started dripping. But after the second “emergency” at 2am (with tenants calling me like I’m the fire department), I realized patching is just kicking the can down the road.
One thing I’d add—sometimes you get lucky and it’s just a weird spot, maybe some old flux left in a joint or a nail nicked a pipe years ago. But if you’re seeing pinholes pop up in random spots, especially on those long horizontal runs, yeah, that’s your warning shot. The rest of the pipe is probably not far behind.
I’ll admit, I dragged my feet on PEX for a while. Didn’t trust plastic in the walls. But after sweating pipes in crawlspaces for years, I’m sold. Just gotta double check those crimps—learned that one the hard way when a connection let go behind a bathroom wall. That was... not my best day.
Epoxy lining always sounded too good to be true to me. Maybe it works in some situations, but every time I’ve seen it used on really rough pipes, it starts flaking off after a couple years and then you’re back to square one—except now you’ve got flakes clogging your aerators.
If you’re seeing green stains or blue water, like you mentioned, that’s another sign your pipes are on their last legs. Water quality matters more than people think. Had one building where the water was just eating copper for breakfast—ended up replacing everything with PEX and haven’t had an issue since.
Long story short: patching is fine for buying time, but if you’re patching more than once or twice a year, you’re just setting yourself up for bigger headaches (and angry calls) later on. Sometimes you just gotta rip off the band-aid and do it right.
I get where you’re coming from, but I’ve seen plenty of cases where a full replacement just isn’t practical—budget, time, or even just logistics in an old building. Sometimes targeted repairs and regular monitoring can buy you a few solid years, especially if you’re dealing with a spotty section and not a systemic issue. Not saying patching is ideal, but ripping everything out isn’t always the magic fix either. Sometimes you gotta weigh the chaos of a full gut job against the reality of what’s actually failing.
When Is It Time To Swap Out Old Pipes?
Sometimes targeted repairs and regular monitoring can buy you a few solid years, especially if you’re dealing with a spotty section and not a systemic issue.
That’s pretty much how I look at it too. Full replacement sounds great on paper, but in the real world, there’s always something—budget gets tight, or you open up a wall and find a mess nobody planned for. Here’s what I usually consider when folks ask about swapping out old pipes:
- If you’re seeing leaks in random spots, not all over, patching can make sense. But if you’re chasing leaks every couple months, that’s a sign the whole system’s tired.
- Water pressure drops or rusty water? That’s usually more than just a “spotty section.” Galvanized pipes especially—once they start going, it’s like dominoes.
- Old buildings are tricky. Sometimes the pipe runs are buried in walls or floors you really don’t want to tear up unless you have to. I’ve seen people spend more fixing drywall than on the actual plumbing.
- Insurance is another angle. Some companies won’t cover water damage if they know you’ve got ancient pipes. Worth checking before you decide.
I get why people want to avoid a gut job. I’ve done patchwork in hundred-year-old houses where the owners just couldn’t swing a full repipe, and yeah, it bought them time. But I always tell them: keep an eye out for patterns. If repairs start stacking up or you see corrosion everywhere, it’s probably time to bite the bullet.
One thing folks forget—sometimes replacing just the worst section (like a main line or a bathroom stack) can relieve enough pressure on the rest of the system to buy some years without going all-in.
It’s never one-size-fits-all. Sometimes patching is just kicking the can down the road, but sometimes that’s exactly what you need to do until life settles down or funds free up. Just don’t ignore the warning signs too long... that’s when things get ugly fast.
I’ve seen folks try to stretch old pipes way past their prime, thinking a patch here and there will do the trick. Sometimes it works, but I always wonder—how do you figure out if it’s just the water pressure or if there’s a bigger issue lurking? Like, is there a point where you just stop trusting the old system altogether?