How to Stop a Ceiling Water Leak With a Turn Valve

When even a tiny bit of water leaks out of a pipe in an upstairs room, the water will travel down the pipe until it hits the ceiling below. This can cause major damage to the drywall or lead to dangerous mold. It's critical to get these leaks stopped quickly. The most efficient way to stop a leak is to replace the turn valve on top of the pipe where the leak is occurring, rather than take chances with a reinstallation.

Things You'll Need

Adjustable pliers
Towel

1/2-inch compression push-to-fit turn valve

Instructions

- 1
  Turn the main water line off by turning the ball valve on the water line 90-degrees clockwise.
- 2
  Locate the pipe with the leak by feeling around the base of the exposed pipes under bathroom sinks and around the pipe that supplies water to the toilets. The leak is likely directly above the wet spot on the ceiling. Once you feel any amount of moisture, you have identified the problem connection.
- 3
  Place adjustable pliers around the base of the existing turn valve on the leaking pipe and turn it counterclockwise until it pulls free from the pipe. The water line will not be charged with water, but some water may still spill from the top. Mop up any spills with a towel.
- 4
  Align a half-inch compression push-to-fit turn valve over the top of the exposed pipe. Press down on the valve until it snaps into place. The compression valve will create its own seal, so it is not necessary to use pliers.
- 5
  Unscrew the supply hose attached to the old valve and place the end of the hose over the pipe threads on the new valve. Turn the nut on the hose clockwise with pliers until tight.
- 6
  Turn the main water line back to the on position.

How to Change the Feed Pump for Boilers

How to Add & Vent a Basement Toilet

Plumbing