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Just realized I was wrong about those old apartment building conduits
Tbh, I got stuck for almost four hours yesterday trying to fish a line through a conduit in a 1960s building downtown. Ngl, I thought it was just a simple pull, but the inside was full of old, crumbly insulation that kept snagging. What's your go-to trick for clearing out a totally clogged pipe like that?
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henrys602mo ago
That crumbly old insulation is the worst, right? Honestly, a shop vac alone won't always get it. Have you tried a foam drain cleaner first to loosen it up, then flush it with a pressure washer hose? The foam breaks down the gunk so the water can push it out.
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jade6392mo ago
Ugh, that sounds like a nightmare. Henrys60 has a solid point about using foam first to break it up.
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wyatt86216d ago
Henrys60 mentioned foam, but what about old conduit that's got decades of hardened rosin or some sort of tar-like coating inside? I've had luck with a flexible plastic drain snake covered in a rag soaked in mineral spirits, then pulling it back and forth to basically scrub the walls. It's messy (wear gloves, obviously) but it breaks up stuff that foam won't touch. Do you think that would work better or worse than the foam approach for that super old, sticky gunk?
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