How to Replace Copper Plumbing

Do-it-yourself plumbing is risky business. You can damage your existing plumbing and cause problems down the line.

At DRAINPRO, we recommend going with experienced plumbers for every plumbing job no matter how small. However, we recognize that some Ottawa homeowners may be interested in trying their own small plumbing projects. We want to make sure that they get good advice for those projects, so we have provided these small guides.

Please note that you are following this guide at your own risk. And if you ever feel that you may need extra help, call DRAINPRO.

Tips for Working With Copper Plumbing

There are many types of copper plumbing. Before replacing the copper plumbing in your house, be sure that you have the right kind of copper plumbing. Types of copper plumbing include.

  • Type M: the thinnest-walled type of copper piping.
  • Type L: medium-walled copper piping
  • Type K: the thickest copper piping available.

Type L is the most common type of copper piping used in homes, but you should check with your hardware store to make sure the pipe you’re buying matches the pipe you’re replacing.

A helpful way to determine the type of copper piping already installed is by the colour of the lettering on it. Type M’s letters are red, type L’s are blue, and type K’s are green.

When cutting copper piping, we advise using a copper tube cutter. This helps to ensure that the cut is straight every time.

Once you’ve cut the copper pipe to the right length, and have removed the old length of pipe, you’ll want to apply flux to the part of the pipe that will slide inside the coupling for the old pipe. Do this using a flux brush. This helps to ensure a consistent application.

Call DRAINPRO for Help

Remember, if at any time you feel uncomfortable or unsure, give DRAINPRO a call. Our Ottawa plumbers are nearby and ready to help you.


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