Hello,

What is the group's opinion about microbore? I haven't used it before
but heard it was good for threading between joists, like PEX and PB
pipe. But I've also read criticism it will block with sludge. Is this
8mm only or is 10mm susceptible too? Surely that's not a problem of
the pipe but a problem with the system though, if there's that much
sludge?

I was going to run 15mm pipe to the radiator but switch to 10 mm to
run behind the skirting board for the last metre. Can you see any
problems with this? By using just a short length would that avoid any
problems?

Is there such a thing as microbore lagging? I haven't seen any at any
plumbers' merchants.

Thanks,
Stephen.