Copper overflow pipes

Yellow_Fern

Hi all,

I am wondering has anyone investigated thermal bridging of copper overflow pipes that cross the thermal envelope? I understand they are small but copper is extremely conductive and I noticed this feature in some builds. Does it have a negligible impact?

sydthebeat

overflow from what?

any overflow ive seen from an over flow tank in the attic is brought over the insulation.

are you talking about a boiler condensation pipe?

Yellow_Fern

sydthebeat wrote: »

overflow from what?

any overflow ive seen from an over flow tank in the attic is brought over the insulation.

are you talking about a boiler condensation pipe?

I have the attic level ones and that seems like a good design. The pipe I refer too is at foot level at the back of the house. It isnt the boilers flue but can boilers have copper overflow drains too? I don't know how boilers work.

Calahonda52

Post a picture please.
it wont be copper from a condensing boiler.
It could be a blowoff vent from a pressurised HW system.

SC024

Yellow_Fern wrote: »

I have the attic level ones and that seems like a good design. The pipe I refer too is at foot level at the back of the house. It isnt the boilers flue but can boilers have copper overflow drains too? I don't know how boilers work.

safety valve / blowoff outlet from boiler most likely. generally left out where you will see water coming from it. normally copper I believe.

condense will be a white plastic 22mm going to a gulley. dribbles when running.

Neon_Lights

Copper Pipe!