How do plastic and copper plumbing systems compare?


Search any plumbing related forum and you’re sure to find heated debate on plastic vs copper plumbing systems. It’s a subject that every installer has an opinion on (and is keen to share!), usually preferring to use one material over the other, but not always considering that the two can be used together.


Combine plastic and copper plumbing systems for versatility

As a manufacturer of plastic plumbing systems, it’s clear which one we champion, but one of the many benefits of our Hep2O push-fit plumbing system is that it can be used with copper, which makes it a versatile option for small or large scale plumbing jobs. Connecting plastic and copper plumbing systems with Hep2O couldn’t be easier. Simply follow our step-by-step guide below.


Connect plastic and copper plumbing with Hep₂O.

Hep2O fittings have been designed to form reliable joints with metric copper pipe which conforms to BS EN 1057 – R250.

Step 1

Measure the pipe, allowing sufficient length for insertion into the fitting, and mark with a pencil.

Step 2

Cut the copper pipe with a wheel cutter.

Step 3

Carefully inspect the pipe ends for burrs or swarf.

Step 4

Push the pipe firmly into the fitting.

Step 5

Tug back on the pipe to ensure the grab-ring engages correctly and prevents the pipe withdrawing.

Please note:

  • ½” ¾” & `1” Imperial Hep20 fittings can be connected directly to Imperial Copper 
  • Metric Hep20 can be connected directly to imperial copper using the conversion fitting as shown in the table below.

When should you use plastic, copper or a combination of both?


Which system to use depends on what you’re trying to achieve. Our guide below should help you make a decision: