When is it time to swap out old pipes?

Pipe lining’s been pitched to me a few times, but I’ve always hesitated. It can work for certain types of pipes - mainly if the structure’s still sound and you’re dealing with pinhole leaks or corrosion, not major breaks. But honestly, in my experience, it’s more of a stopgap. If you’re already opening up walls, full replacement gives you peace of mind and fewer headaches down the road. I’d rather deal with the mess once than keep patching or worrying about hidden issues.

Couldn’t agree more with your take on lining being a bit of a band-aid. I get why people are tempted - it sounds less invasive, and the sales pitch always makes it seem like a miracle fix. But in reality, if you’re already tearing into walls or floors, it just makes sense to go all the way and swap out the old pipes. I’ve been down this road in my own place, and honestly, the peace of mind is worth every bit of dust and hassle.

One thing I’d add: from an eco angle, full replacement can actually be the greener choice long-term. Constantly patching up leaks or dealing with hidden corrosion means more wasted water and materials over time. Plus, newer piping materials tend to be more efficient and less prone to leaching weird stuff into your water. I know some folks worry about the waste from ripping out old pipes, but if you’re careful about recycling scrap metal or reusing what you can, it’s not as bad as it sounds.

I did try lining once in a rental property - seemed like a good compromise at the time. But a year later, we had to go back in anyway because the underlying pipe was just too far gone. Lesson learned. If you’re already making a mess, might as well do it right and not have to think about it again for decades.

It’s definitely a pain in the short term, but future-you will thank you for biting the bullet now instead of dealing with mystery leaks or water damage down the line.

“If you’re already making a mess, might as well do it right and not have to think about it again for decades.”

Yeah, that hits home. I tried to save a buck by patching some old galvanized pipes in my basement - thought I was being clever. Fast forward six months, and I’m chasing leaks behind drywall. Total headache. In hindsight, just ripping them all out would’ve saved me time (and a few gray hairs). The upfront pain is real but way less annoying than constant repairs.

“thought I was being clever. Fast forward six months, and I’m chasing leaks behind drywall.”

Been there. I once tried to just swap out a few corroded joints, thinking it’d buy me time. Ended up with a slow leak that led to mold behind the laundry area. If you see rust or flaking, it’s usually smarter to just bite the bullet and replace the whole run. It’s messy, but at least you know what you’re dealing with - not constantly worrying about hidden damage down the line.

I get the urge to just patch things up and hope for the best - nobody wants to rip out a wall if they don’t have to. But honestly, once you spot rust or flaking, it’s usually a sign there’s more going on than you can see. I learned that the hard way with some old galvanized pipes in my kitchen. Thought I could just swap a section, but the corrosion had spread further than I realized. Ended up tearing out more drywall than I planned.

If you’re trying to be eco-conscious (and save money long-term), here’s what worked for me:

1. Check for visible rust, greenish stains, or any damp spots along the pipe.
2. If you find one bad joint, inspect at least a few feet in both directions - corrosion tends to travel.
3. When in doubt, replace the whole run with something durable like PEX or copper. Less waste down the line.
4. Salvage what you can - sometimes old copper can be recycled.

It’s not fun, but chasing leaks is worse... and mold cleanup is no joke either. Sometimes “just enough” isn’t really enough when it comes to plumbing.

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.

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...

I totally get where you’re coming from. I’m in my first place and after the third “minor” leak, I just couldn’t take the anxiety anymore. I went for a full PEX repipe last year - honestly, no regrets so far. The upfront cost stung a bit, but not having to worry about waking up to a flooded basement is worth it for me.

I’ve heard some folks complain about PEX if you’ve got rodents (they can chew through it), but that’s not been an issue here. The only thing I kinda miss is the “solid” feel of copper pipes, but that’s just nostalgia talking. If anything, I wish I’d done the whole house at once instead of dragging it out.

Patch jobs are fine for a while, but if your pipes are old and you’re already seeing leaks, it feels like you’re just delaying the inevitable. Peace of mind is underrated - sometimes jumping the gun is actually the smart move.

Yeah, I hear you on the patch jobs - sometimes it feels like playing whack-a-mole with leaks. I’ve seen folks spend more on “quick fixes” over a few years than just biting the bullet and repiping. Had one guy who swore by duct tape... until his kitchen turned into a slip-n-slide. PEX is solid, but yeah, if you’ve got a rodent circus in your walls, maybe not ideal. Copper’s got that old-school charm, but man, it’s pricey these days. Peace of mind’s worth a lot - sleeping through the night without pipe drama is underrated.

Yeah, patching gets old real fast. I tried the “one more fix” route for years and it just added stress (and water stains). I get the appeal of copper, but honestly, PEX has been good to me - just gotta keep the critters out. At some point, you just want to stop worrying every time you hear a drip.

At some point, you just want to stop worrying every time you hear a drip.

That really hits home. I used to tell myself “just one more patch” too, but after the third ceiling stain, it was more about peace of mind than saving money. I get the copper vs. PEX debate - copper feels permanent, but PEX is just so much easier to work with. Did you ever run into issues with rodents and PEX? I’ve heard stories but never actually seen it firsthand. Sometimes I wonder if the stress of waiting for the next leak is worse than just biting the bullet and doing a full repipe...

I’ve heard those PEX rodent horror stories too, but honestly, I haven’t seen it in my place. Maybe it depends on where you live? My neighbor swears by copper for that reason, but I just couldn’t deal with the hassle and cost. After patching pinholes for years, I finally caved and did a full PEX repipe last winter. Not cheap, but man, it’s been nice not jumping every time I hear water running... Peace of mind is worth something, even if it stings the wallet upfront.

Peace of mind is worth something, even if it stings the wallet upfront.

Totally get that. I used to joke my old galvanized pipes were “self-watering” the basement. PEX has been drama-free for me too - no rodents, just reliable showers. Copper’s great, but my budget laughed at the idea.

I hear you on the budget side - copper’s like the luxury car of plumbing, but my wallet’s more used to public transit. I went through the same debate when I moved in. The inspector basically gave my pipes a “best before” date, and every time I heard a weird noise, I’d picture a geyser in the basement. Ended up going with PEX too. It’s not glamorous, but it’s been solid so far.

Honestly, peace of mind is underrated. There’s something about not worrying if your morning shower will turn into an indoor pool that just feels... right. Sure, it stings to pay upfront, but I’d rather deal with that than surprise water features in the laundry room. You made a smart call - even if your bank account needed a moment to recover.

Honestly, peace of mind is underrated. There’s something about not worrying if your morning shower will turn into an indoor pool that just feels... right.

Totally agree - having new pipes means one less thing to stress about. I went with PEX too after seeing the price tag on copper. My only hesitation was reading mixed stuff about PEX and UV exposure or rodents. Anyone run into issues with that? I wrapped mine where it’s exposed but sometimes I wonder if I’m overthinking it.

My only hesitation was reading mixed stuff about PEX and UV exposure or rodents. Anyone run into issues with that? I wrapped mine where it’s exposed but sometimes I wonder if I’m overthinking it.

Had a similar worry when I started swapping out old galvanized in a triplex. The PEX install was a breeze, but I did have one spot in a crawlspace where mice chewed through the insulation and nicked the pipe. Only happened once, but it was enough to make me double up on protection in those areas. UV-wise, as long as it’s not sitting in direct sunlight, wrapping should be plenty. Overthinking? Maybe, but after dealing with a midnight leak call, I’d rather be safe than sorry.

Had a job last winter where a homeowner had wrapped their PEX with some pretty heavy-duty insulation, thinking it’d be enough to keep the critters at bay. Turns out, the local squirrels had other ideas and chewed right through both the wrap and the pipe - left a mess in the ceiling. The thing that struck me was, the guy had gone above and beyond with protection, but rodents can be relentless if they want in. I’ve started using metal conduit or even just some scrap sheet metal around the most vulnerable spots, especially in crawlspaces or garages. It’s a pain, but it’s saved me a couple headaches since.

On the UV thing, I’ve only seen real damage when PEX is left outside for months, like on new builds where the plumbing sits exposed before siding goes up. Indoors, or even in a basement window, I haven’t seen enough sunlight get through to cause issues. I get the worry, though. After you’ve dealt with one of those “surprise leaks,” it’s hard not to overthink every possible failure point.

Curious - has anyone tried using that rodent deterrent tape? I’ve seen it recommended for car wiring, but never used it on plumbing. Wondering if it’s just snake oil or if it actually works. Or maybe I’m just getting paranoid after too many late-night calls...