Heating Pipes

[joelpeyton]

I'm thinking of running some heating pipes in my extension in 15mm Speedfit, is this a good idea? What are the pros and cons. Need to run through joists so seems the obvious answer, otherwise I'd need joints in the copper between almost every joint. What would they have done pre-plastic? (Notching I suppose.) Are there any regs regarding this?

Also I am going to run some down the inside (obviously) of an external wall behind the dot and dab, should I consider lagging them?

Much appreciated

 

[kevplumb]

first questoin is what are you coming off with the 15

 

[joelpeyton]

I'm going to be teeing off a radiator otherside of the extension, not sure where the stiltsons come into it

 

[Dan Robinson]

Oh dear...

 

[Terry lambert]

I would use copper, you could use plastic if you wish

Cut notches in the joists just deep enough for the pipes, but no deeper than I/8 the depth of the joist

Measure the room across and devide this into four, the joist should be notched no more than 1/4 of the span from a wall, and no closer than 280mm

As an engineer I wouldnt run the pipes down the wall behind the plasterboard, although I've seen many builders do this.

I would run them external to the board and box them so that they would be readily accessible.