Bathroom sink hot water shut-off valve
I live in a house on columns. In following the instructions for removing a bathroom sink faucet I turned the shut-off valves off. The cold side did not run, but I am getting a drip from the hot side... a drop every second or two. I tried shutting off the supply downstairs. But the drip persists. The shut-off valve is not dripping, it just does not want to shut off completely. It was installed new about 4.5 years ago.
I have not disassembled anything yet because I don't want to make a big mess. What can I do to be able to replace the faucet without damaging the water heater or having a lot of water in the bathroom?
Thanks. BWD