Your sink usually drains through a tailpiece (the straight pipe hanging down) into the P-trap, then into the wall. The problem? Nothing ever lines up perfectly. This is where you channel your inner yoga instructor—you’ll need to bend, twist, and mutter words your grandmother wouldn’t approve of.
You’ll likely encounter a slip joint nut, which is a plastic ring that tightens with your bare hands (no tools—unless you’re a gorilla). Overtighten it, and you’ll crack the plastic. Undertighten it, and you’ll get a drip that will haunt your dreams like a dripping faucet in a horror movie.
Here’s a surprising fact: the first “traps” were invented in ancient Rome using lead pipes. They were called “siphons,” and they probably gave your ancestors lead poisoning. You’re doing better than a Roman emperor already.
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If the pipe from your sink doesn’t reach the wall pipe, you’ll need an extension tube. That’s fine—just buy one. But make sure it’s the same diameter, or you’ll be making a pipe that looks like a snake that swallowed a tennis ball. That is not a good look.
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And for the love of all that is holy, don’t use duct tape. I saw a guy do that once. He called me at 3 a.m., sobbing into his phone while his kitchen resembled a water park called “Weeping Sink Lagoon.” Use proper PVC cement or compression fittings—they’re rated for the job and won’t abandon you at midnight.
You might also encounter a disposal unit (if you’re fancy). That thing has a big rubber gasket that’s basically a mouth you need to feed the pipe into. If it leaks, you’ll need to tighten a giant nut underneath—think of it as angrily adjusting a stubborn beach ball.