Extending a sink plumbing requires knowledge of the local plumbing codes and supplies.
- Turn off water supply to existing sink
- Loosen faucet mounting nuts with an adjustable wrench
- Unscrew drain trap, cut pipe if it is too long, and remove it from the wall
- Measure new extension tube length needed and purchase one that matches current tubing size
- Connect new extension tube to existing piping using compression fittings and plumber's tape for a watertight seal
- Reattach faucet and turn on water supply; check connections for leaks.
With the right supplies, extending a sink plumbing can be done safely in just a few steps.