Project Guide

How to Fix a Leaky Pipe

1
Epoxy Putty
A person turns a water supply valve beneath a sink.

An epoxy putty can be applied over the source of the leak to temporarily seal it.

  • Immediately turn off the water supply upstream of the leaking pipes.
  • Drain the water from the damaged line and ensure that the area to be patched is clean and dry so that the epoxy will properly adhere to the pipe.
  • Tear off enough plumbing epoxy putty to fully cover the surface around the leak.
  • Knead the putty until it is pliable enough for application.
  • Apply and cure the putty according to the manufacturer’s instructions.
  • After the putty has fully cured, turn on the water flow and check for leaks.
2
Pipe Repair Kit with Tape
A person uses a wrench to work on plumbing pipes beneath a sink.

Some pipe repair kits have a special tape used to provide emergency relief from leaks. 

  • Immediately shut off the water supply to the leaking pipes or fittings.
  • Following the manufacturer’s instructions, activate the fiberglass tape and wrap around the area of the leak.
  • Ease of application and flexibility of material make it useful to use around fittings.


A self-fusing silicone tape can be used as a temporary fix on low pressure lines. Wrap the tape around the pipe, stretching it as you make tight overlapping passes to cover the area of the leak.

3
Patch and Clamp
Plumbing pipes and a toolbox are shown beneath a sink.

Repair clamps can sometimes be used for larger splits or ruptures in pipes. 

  • Immediately turn off the water supply to the leaking pipes and clean the area around the hole to be patched.
  • Use a file to smooth any sharp edges that might cut through the neoprene rubber patch.
  • Apply the patch and repair clamp so it evenly overlaps the damaged section of pipe.
  • Tighten the clamps to seal the leak.
  • Turn on water supply and check for leaks.

When figuring out how to fix a leaking pipe, remember that repair tape, pipe putty & clamps offer temporary solutions to an immediate problem. Once pipe leaks are sealed, your next step is just as important: Make plans for a permanent repair even if it's a small leak and call a licensed plumber if necessary.


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