Quick fix tape vs epoxy putty for leaky pipe joints

Had a similar issue under my bathroom sink last year. Tried the waterproof tape first because it seemed quicker, but honestly, it started dripping again after a couple months. Ended up going back and using epoxy putty - it took a bit more effort initially, but it's been holding strong since then. If you're looking for long-term reliability, I'd lean toward the putty... just make sure you prep the surface well beforehand.

"Tried the waterproof tape first because it seemed quicker, but honestly, it started dripping again after a couple months."

Did you wrap the tape super tight and overlap it enough? I've seen people swear by the tape, but honestly, I've always been skeptical. Seems like it's more of a temporary band-aid than a real fix. Epoxy putty definitely feels more reliable long-term - just wondering if surface prep is really that critical or if it's more about application technique...?

I've seen similar issues with waterproof tape - it can be hit or miss depending on how clean and dry the pipe surface was when you applied it. Surface prep matters a lot more than most people realize... even a tiny bit of moisture or dirt can compromise adhesion. Epoxy putty does feel sturdier, but again, roughening up the surface and making sure it's completely dry before applying makes a huge difference. Sounds like you're on the right track though - these leaks can be tricky to nail down.

even a tiny bit of moisture or dirt can compromise adhesion.

Good points about surface prep - definitely learned that the hard way myself. Had a similar leak under my bathroom sink last year, and I initially went with waterproof tape because it seemed quicker and less messy. Worked fine for a couple of months, but eventually started dripping again. Switched to epoxy putty after that, and it's been holding solid ever since.

One thing I'd add is that epoxy putty tends to be more eco-friendly in the long run. Waterproof tape usually ends up as waste pretty quickly if it doesn't hold, and you end up using more of it. Epoxy putty, on the other hand, is durable enough that you're not constantly reapplying or replacing it. Just make sure you mix it thoroughly and apply it firmly around the joint - like mentioned above, roughing up the surface helps a ton. It's a bit messier at first, but honestly worth the extra effort if you're looking for something reliable and sustainable.

The “holds for a couple of months” result is a good warning, but the joint type matters more than the product label.

- On a threaded connection, tape or epoxy putty over the outside is only a temporary patch. Neither restores a damaged thread, failed washer, or cracked fitting.
- Shut off the supply, relieve pressure, and dry the area first. Then remove the joint and replace the washer, connector, or fitting that’s actually leaking.
- For tapered pipe threads, use the correct thread sealant for that material and application. PTFE tape isn’t normally the sealing method for a slip-joint nut with a rubber washer.
- Epoxy putty is more useful as an emergency external patch on a crack or pinhole, but it can make the later repair harder and may fail with movement or heat.

If the leak is from a drain trap connection, check the washer and alignment before applying anything to the outside.

Is the drip coming from a supply or drain connection, or from the pipe itself? That distinction matters before comparing patches: a connection leak may need its washer or fitting addressed, while putty is more relevant to a crack or pinhole.