MIcrobore pipe?

recyclingbox

I am about to install two additional radiators in a new extension i am having built. the existing central heating system uses 15mm copper pipe throughout. I would like to know if i can use 10mm microbore for the new room (with appropriate connectors) or should i stick to 15mm like the rest of the system I am assuming here that 10mm would be easier to install - the pipe runs will be approx 15M. I have done plenty of plumbing jobs around my own house and my parents and very comfortable with it, just never used 10mm before.

Any advice or guidance here would be great.

Thanks in advance

Recycler.

27col

10mm pipe is not really intended to be seen. It is quite difficult to get nice and straight if it is on the surface. If it is going under the floor then no problem I would have thought. There is a school of thought that CH systems should be in the same size pipe throughout.

Ionkontrol

Stick with 15mm copper.
If I refitted my system from scratch, I would 22mm all round, t-ing off 15mm up the rads.

Igol

My self build is 15mm apart from one rad in a back bedroom which is on 10mm mainly due to a couple of awkward bends that I had to push the pipe through. Rad works fine and the pipework is all out of sight, as 27col said its not nice to look at

recyclingbox

thanks guys,
me thinks i will be sticking with the 15mm then

Cheers

Recycler