Upstairs radiators - pipe sizes

[echoes]

Hi all,

I'll be installing some upstairs radiators using 15mm copper, and this will require a bit of joist notching in the void. Would anyone recommend using 10mm copper instead so that the pipes can be run through holes rather than notches?
I won't be using plastic (not used it before, and my soldering is good).

 

[LUNAT]

HI

it should be ok to use 10mm pipe.but why not simply notch for 15mm pipe ? both ways ok .

 

[echoes]

Thanks LUNAT - I will proceed with 15mm & notches.

 

[kirkgas]

remember to take size of joist and intended position into account when notching joists, you cant cut a 100mm joist and any other can only be cut 1/8th of the depth, plus the dimensions as to where along the span you can cut a joist

 

[BournemouthPlumber]

If the above post causes an issue then why not install in Hep20 with copper tails?

Can drill through joists rather than notch. Retains the structural integrity of the joists.

 

[echoes]

remember to take size of joist and intended position into account when notching joists, you cant cut a 100mm joist and any other can only be cut 1/8th of the depth, plus the dimensions as to where along the span you can cut a joist

Absolutely - Thanks kirkgas.

If the above post causes an issue then why not install in Hep20 with copper tails?

I've no religious aversion to plastic, but I've never used it and I trust my soldering far more than a first attempt at installing HEP2o, but thanks. If joists are too small for notching then will reconsider either HEP20 or 10mm Cu.