i'm just having an extension built to make room for the Baby and I'll be installing 3 new rads,
I have a Worcester 28CDI boiler and all pipe work is currently 15mm cooper pipe,
Question is, can I use 10mm pipe for the additional with 10mm->15mm reducers or can I use plastic pipes
Which is best or should I stick with 15mm cooper pipe ?
Cheers in advance Mark