Willow roots are a nightmare, no kidding. I had a rental where the tenants kept complaining about slow drains, and sure enough, it was a willow about 30 feet away sending roots right into the old clay pipes. Ended up having to replace a whole section—liners just weren’t enough. I’m with you on the chemicals, too. Tried root killer once and it just made a mess, plus the tenants weren’t thrilled about the smell. Honestly, sometimes it feels like the trees are winning, but at least patching liners buys you some time. Those squirrels probably are rooting for the trees... wouldn’t surprise me.
Had a similar headache with an old maple at one of my places. Pipes were cast iron, so I thought I was safe, but those roots found a way in through a tiny crack near a joint. Tried foaming root killer—just made the tenants complain about the smell, and didn’t do much anyway. Ended up digging up the yard and replacing about 15 feet of pipe. Honestly, unless you want to be out there every year with a snake or hydrojet, full replacement’s the only thing that really sticks. Trees are stubborn, but I guess so am I.
“Tried foaming root killer—just made the tenants complain about the smell, and didn’t do much anyway.”
That smell is next-level, right? I remember trying copper sulfate once and my neighbor swore his dog wouldn’t go outside for a week. Full replacement sounds brutal but probably worth it in the end. Did you go with PVC or stick to cast iron for the new section? I’ve heard some folks swear by one or the other, but I’m not convinced there’s a perfect answer.
PVC all the way for me, unless you’re dealing with a historic building or something where cast iron’s a must. I’ve swapped out so many old, root-choked cast iron lines that I’ve lost count. The stuff’s tough, but once it starts to rot or crack, roots just treat it like an open invitation. PVC’s lighter, cheaper, and honestly, easier to work with—especially if you’re crawling around in a trench at 2am because someone’s basement is flooding (ask me how I know...).
That said, cast iron does muffle noise better. Some folks swear by it for that reason, especially in multi-family setups. But for most repairs or replacements, I’d take PVC any day. No more root issues since the swap—knock on wood—so I’d say it’s worth the hassle upfront. And yeah, those chemical root killers? More trouble than they’re worth in my book. The smell lingers forever and doesn’t really solve the problem long-term.
Honestly, I used to think cast iron was indestructible until I saw what roots can do over a few decades. Swapping to PVC was a game-changer—dragging those old pipes out was brutal, but now I don’t even worry about roots sneaking in. The noise difference is real, though. Sometimes I miss how quiet cast iron kept things, but I’ll take peace of mind over peace and quiet any day. Those root killers just felt like putting a band-aid on a broken leg... and yeah, the smell lingers forever.