15mm copper/plastic coupling

[Frank Stacey]

I have just been fixing a leak where copper pipe was joined to plastic (polyplumb barrier pipe). For various reasons I chose to use a plastic coupling. Is the copper pipe/plastic coupling satisfactory long term? It is working fine as I write but soon it will be buried under the bathroom floor and everything re-decorated I don't want to have to rip it all out again. (I am aware that I could have used a copper coupling and a metal insert in the plastic pipe I just wonder if I "should" have done it that way round.)

Frank the tentative plumber

[Grunff]

Yes.

Presumably you used a plastic insert?

[Frank Stacey]

Yes, I did use a plastic insert on the all plastic side.

My worry is about the long term effectiveness of copper-in-plastic versus plastic-in-copper. So far I haven't seen anything which mentions this. Possibly because it is a non-issue - they are equally durable.

Frank the tentative plumber

[Guy King]

The message from "Frank Stacey" contains these words:

I did some a decade ago and they're fine.