Leaking copper pipe at a joint?

I had to replace a bathroom faucet. The old faucet plumbing was all sweated copper. I shut off the faucet supply valve then put on a fitting for a flex hose supply line. While doing this, I had to bend the older 40 year old copper supply line a little down near the floor. One of the joints right above the floor started to leak, about a drop once every five minutes. It‘s starting to leak a little faster now. It would be nearly impossible to drain the cold water from the pipe, since this is in an apartment that shares the same meter with other units.Is there something that I can use to seal the joint on the pipe that doesn‘t require the pipes to be dry when I fix it. Maybe some sort of epoxy? I can turn off the water supply at the curb, but this turns off the water supply to all the occupied apartments.

Polyester is a synthetic cloth itself - no blending. That said, it is still an abomination.

OMG you people go overboard. Do you live in the old testament times? Are you a jew living under Moses law? Give me a break,

I know you dont want to hear it but the only way to fix it right is turn it off and solder on a new joint. Home centers sell a plumbers epoxy that seems to work well, but nothing is gonna work as well as a new fitting

If you go to a DIY store, in the plumbing section you can find a repair sleeve. They make several types but they are all similar. It wraps around the pipe and has rubber on the inside diameter of the sleeve. You place the rubber over the leaking area, close the sleeve and engage screws to keep the sleeve closed and tight. Its not the best solution but it beats redoing a whole section of copper.

Certainly, you must have a knob close to the faucet that you were working on that will turn the water off where you need it. It is standard plumbing procedure to place a cut-off valve several places in a house or apartment that can be used to cut the water off at sinks, bathtubs, washers, showers, etc. If not, your landlord needs to have one installed for you. Your apartment would not pass inspection of any kind without several cut-off valves installed.

Polyester is a synthetic cloth itself - no blending. That said, it is still an abomination.

OMG you people go overboard. Do you live in the old testament times? Are you a jew living under Moses law? Give me a break,

I know you dont want to hear it but the only way to fix it right is turn it off and solder on a new joint. Home centers sell a plumbers epoxy that seems to work well, but nothing is gonna work as well as a new fitting

If you go to a DIY store, in the plumbing section you can find a repair sleeve. They make several types but they are all similar. It wraps around the pipe and has rubber on the inside diameter of the sleeve. You place the rubber over the leaking area, close the sleeve and engage screws to keep the sleeve closed and tight. Its not the best solution but it beats redoing a whole section of copper.

Certainly, you must have a knob close to the faucet that you were working on that will turn the water off where you need it. It is standard plumbing procedure to place a cut-off valve several places in a house or apartment that can be used to cut the water off at sinks, bathtubs, washers, showers, etc. If not, your landlord needs to have one installed for you. Your apartment would not pass inspection of any kind without several cut-off valves installed.