When is it time to swap out old pipes?

Honestly, those tight spaces are the worst. I’ve had a couple times where the PEX tool barely fit behind the joists, especially when you’re trying to get a clean crimp. Ever try using push-to-connect fittings in those spots, or do you stick with crimp rings even in awkward corners?

Tight spots are where you really earn your lunch, huh? I’ve had my fair share of wrestling matches with the crimp tool behind a joist or two. One time, I dropped the tool and it bounced off a pipe, nearly took out my kneecap - felt like the house was fighting back.

I’ll admit, I’ve used push-to-connects in a pinch, especially when there’s just no way to get the crimper in there without turning into a contortionist. They’re not my first choice for every job - call me old school, but I trust a good crimp ring more for long-term peace of mind. Still, those push-fits have saved my bacon more than once. Just gotta make sure the pipe’s clean and square, or you’ll be back in that crawlspace cursing yourself later.

Funny how the “easy” jobs always seem to end up with you wedged between ductwork and spiderwebs, huh?

One time, I dropped the tool and it bounced off a pipe, nearly took out my kneecap - felt like the house was fighting back.

Crimp rings definitely feel more solid, but I’ve actually started leaning on push-to-connects a bit more, especially in those “wedged between ductwork and spiderwebs” situations. I get the concern about long-term reliability, but if you follow the manufacturer’s prep steps - clean, deburr, mark insertion depth - they’re surprisingly dependable. I’ve seen a few old crimp rings fail from corrosion where water sat, so sometimes it’s not just about the connection type but also the pipe’s age and condition. Safety-wise, I’d rather use a push-fit than risk a bad crimp in a spot I can barely reach.

Safety-wise, I’d rather use a push-fit than risk a bad crimp in a spot I can barely reach.

Totally get that - nothing like trying to crimp behind a furnace and realizing you’ve got T-Rex arms. I’ll admit, push-to-connects have saved my bacon more than once when I was wedged under a sink with about six inches of clearance and a flashlight between my teeth. Still, I’ve seen some sketchy installs where folks skipped the “clean and deburr” part and ended up with leaks months later. Guess it’s like anything - shortcut the prep, pay for it later.

I hear you on the push-fits - sometimes they’re the only thing that makes sense, especially in those nightmare crawlspaces. But I’ve learned to be a little paranoid after dealing with a couple of hidden leaks that turned into ceiling stains and tenant headaches.

- Had a spot behind a water heater where a previous owner used push-fits and skipped deburring. Looked fine for about a year, then I got the dreaded “dripping sound” call. Ended up tearing out drywall just to track it down.
- Now, if I can’t get proper access for a crimp or solder, I’ll use push-fit, but I’m borderline obsessive about cleaning and checking for burrs first.
- If the pipe’s old and crusty (especially galvanized), I usually just bite the bullet and swap out the whole run instead of patching. Too many times I’ve fixed one leak only to have another pop up down the line.

Shortcuts seem tempting until you’re paying for repairs later… or worse, dealing with insurance. Sometimes it’s just worth the hassle upfront.

That “dripping sound” is the stuff of homeowner nightmares, seriously. I’ve had similar issues - once found out a slow leak had been feeding a patch of black mold behind my laundry room wall for who knows how long. Honestly, I’m with you on just replacing crusty old pipes instead of patching. It feels wasteful at first, but the peace of mind (and not having to rip out drywall twice) is worth it. And yeah, shortcuts always come back to haunt you... especially when water’s involved.

Honestly, I’m with you on just replacing crusty old pipes instead of patching. It feels wasteful at first, but the peace of mind (and not having to rip out drywall twice) is worth it.

I get where you're coming from, but I always feel a little weird about tossing out pipes that might still have some life left. Isn’t there a middle ground? Like, targeted repairs or lining the inside of the old pipes instead of a full swap? Feels like we’re creating a lot of waste when sometimes a fix could do the trick - especially if the material isn’t actively leaching anything nasty. Maybe it’s just my eco-guilt talking, but I’d rather avoid sending a bunch of metal or plastic to the landfill if I can help it.

I totally get the eco-guilt - scrapping pipes that aren’t leaking yet feels wasteful. I’ve tried pipe lining in a couple of rentals, actually. It worked okay, but I had to redo one section when the liner failed after a year. Sometimes patching is fine, but if you’re already opening up walls, it’s tempting to just do the whole thing and not worry about it again for decades. Still, I wish there was a perfect middle ground... one that didn’t involve me babysitting plumbers every few months.

if you’re already opening up walls, it’s tempting to just do the whole thing and not worry about it again for decades.

I get the urge, but sometimes full replacement is overkill, especially if the existing pipes are still solid. I’ve seen old copper last way longer than people expect. Lining’s hit or miss, but spot repairs can buy a lot of time if you’re not ready to gut everything.

I’ve seen old copper last way longer than people expect.

That’s true, but I’ve also seen “solid” pipes turn into a pinhole sprinkler overnight. Sometimes you don’t know what’s going on inside until it’s too late. I get wanting to avoid overkill, but if you’re already tearing out drywall, it’s not crazy to just swap the lot and sleep easy. Guess it depends how much you trust what’s hiding in there...

Had a tenant call me once at 2am because their “ceiling was raining” - turns out, a little copper pinhole had turned into Niagara Falls. If you’re already opening up walls, I’d say swap it. Peace of mind’s worth a lot, trust me.

Yeah, that’s a nightmare scenario. Once you’ve seen water pouring out of a ceiling, you never quite trust those old pipes again. I had a similar thing happen in my first place - tiny leak behind the wall, didn’t notice until the paint started bubbling. By then, it was a mess.

I totally get wanting to swap things out while you’ve got access. It’s just way easier (and cheaper) to do it now than after everything’s finished and you’re patching up drywall for the second time. Even if the pipes look alright on the outside, you never know what’s going on inside after decades of use.

Some folks say “if it ain’t broke, don’t fix it,” but with plumbing, I’m more in the “better safe than sorry” camp. Peace of mind is huge, especially if you’re renting the place out or just don’t want to deal with emergencies at weird hours. Plus, new pipes usually mean better water pressure and fewer weird noises in the walls.

I guess it’s not always necessary to replace every single run, but if you’re already doing demo and the budget allows, it’s hard to argue against it. Just feels good knowing you won’t wake up to an indoor waterfall one day...

I’ve seen too many “if it ain’t broke” pipes burst at the worst possible moment. Had a copper line corrode from the inside out - looked fine until it just split. If you’re opening walls anyway, swapping them is such a relief later. Peace of mind is worth it.

If you’re opening walls anyway, swapping them is such a relief later. Peace of mind is worth it.

- Couldn’t agree more on the “peace of mind” part. I’ve lost count of how many times folks regret not replacing pipes when they had the chance. Once those walls are closed up, it’s like Murphy’s Law just starts lurking.

- About copper lines - yeah, they can look perfect on the outside and be a ticking time bomb inside. I’ve seen pinhole leaks that only show up as a weird stain on drywall months later. By then, you’re looking at water damage, mold, and a much bigger headache than just swapping out a pipe.

- If you’re already tearing into walls for any reason (remodel, electrical, whatever), it’s almost always worth it to check the plumbing. Even if it’s just a section or two that looks sketchy, better to deal with it now than risk a midnight flood.

- Old galvanized? Don’t even get me started. If you see rust or notice water pressure dropping, that stuff’s living on borrowed time.

- That said, sometimes people go overboard and rip out perfectly good copper or PEX just because it’s “old.” Not always necessary - if there’s no corrosion, no leaks, and the water quality’s good, I’ll leave well enough alone unless we’re already in there for something else.

- Quick tip: if you see greenish stains or crusty buildup on copper joints, that’s your early warning sign. Ignore it and you’re rolling the dice.

I get wanting to save money or avoid extra work, but nothing ruins your weekend like an unexpected geyser behind the fridge...

- Really agree with checking everything if you’re already opening up the walls. I’ve seen people skip it to save a few bucks, only to end up tearing everything out again a year later after a hidden leak.

- One thing I’d add: sometimes copper pipes get pitted from aggressive water, and you won’t see it until there’s a pinhole. If your area’s got hard or acidic water, it might make sense to be more proactive.

- Curious - anyone here ever try pipe lining instead of full replacement? I’ve heard mixed things about longevity, but never actually seen it used in a house around here...

I’ve wondered about pipe lining too, but honestly, I’ve never seen it done in a regular house around here either. Like you mentioned,

“I’ve heard mixed things about longevity”

“the ‘cheaper’ fix ends up costing more down the line”

That’s the story of my life with home repairs, honestly. I looked into pipe lining too, but the mixed reviews on how long it actually lasts made me nervous. Full copper replacement is a pain (and a wallet-buster), but at least you know what you’re getting. I had a friend who went with a “quick fix” patch job and ended up tearing out half his drywall six months later... not fun. Sometimes the slow, expensive route really does save you headaches.

“the ‘cheaper’ fix ends up costing more down the line”

Totally get this. I tried to save a few bucks with a “temporary” fix on my kitchen sink and, surprise, it turned into a full-blown water feature in my basement. Sometimes you just gotta bite the bullet and do it right the first time.

Nailed it. I’ve learned the hard way, too - patch jobs on old pipes just don’t hold up. You think you’re saving a bit, then you’re dealing with leaks, water damage, and sometimes even mold. If the pipes are showing their age or you’re getting repeat issues, it’s usually better to just replace them. Cheaper in the long run, less headache. Trust me, nothing ruins a weekend like an emergency call about a burst line...

You’re not wrong - patching old pipes is usually just kicking the can down the road. I’ve seen folks spend more on repeat “quick fixes” than they would’ve on a proper replacement. That said, sometimes a patch can buy you a little time if you’re in a pinch, but it’s never a real solution if the pipes are already corroded or brittle. If you’re seeing leaks in more than one spot, or if the pipe walls are thinning, it’s probably time to bite the bullet and swap them out. It’s not cheap upfront, but you’ll sleep better knowing you’re not one drip away from a disaster.