Hi!
One of our cold water shutoff valves started to leak for no reason. The leak is not at the glued joints, but under/around the turn handle. When I turned the handle, the valve seemed like it was not open all the way, and when it fully opened, the leak stopped. This valve has not been opened/closed in years. What would make it start to leak out of the blue? We discovered this leak within a few hours, and it caused some damage to the ceiling below. I shudder to think what would have happened if we had been gone for several days! Can I just replace the washer to fix this problem? Also, do I now have to be distrustful of all the other shut-off valves in the house? Any advice will be appreciated!
Thanks!