Taping Your Plumbing Pipes
I probably shouldn't say this, but right when I think
that I've seen everything, I get to see something else. If something
like this works, by all means knock yourself out.
Most of your plumbing leaks underneath your kitchen and bathroom sinks are from loose fittings or improper connections. If the plumbing pipe itself was leaking, it could easily be replaced, especially in a situation like this.
I can't see a repair like taping your plumbing pipes lasting very long, otherwise professional plumbers would use tape to make all sorts of waste pipe repairs. If they're not doing it, there's a good chance that you shouldn't be either.
Home Repair Tip: Remove the damaged plumbing parts and replace them with new ones. Most home improvement centers sell packaged replacement parts for kitchen sink waste lines. This could save you a lot of frustration, especially if you're making your own repairs
Here's another home repair tip that is becoming more accessible to homeowners and do-it-yourselfers. Take a picture of the damaged plumbing pipes with your digital camera or digital phone and then take the camera down to your plumbing supply store.
It wouldn't be a bad idea to take more than one picture. Take as many pictures as you need, because you can always erase them later. More pictures is usually better than less in a situation like this.
A picture is worth a thousand words and if you're having a problem explaining something to your plumbing supply salesman, pictures like these usually works wonders.