Gas pipe under loft insulation.

[Pat_R_]

The copper gas pipe to my boiler in the loft runs between joists and sits on the plasterboard. I understand that it should not be covered by insulation. Why? Is it satisfactory to create a dome over the pipe with upside down guttering and then put fibreglass insulation over the top please?

 

[ShaunCorbs]

Think your getting confused with wires ideally you don’t want wires/ cables encapsulated in insulation as it de rates there load capacity

The gas pipe should have its own clips / supports but other than that never heard of no insulation around it

 

[Pat_R_]

Think your getting confused with wires ideally you don’t want wires/ cables encapsulated in insulation as it de rates there load capacity

The gas pipe should have its own clips / supports but other than that never heard of no insulation around it

Thanks Shaun
I'm basing this on BS 6891:2015 on low pressure gas pipework which says 8.9.13 Pipework shall not be laid below or within roof space insulation material.

 

[ShaunCorbs]

Is it staying non habitable/ no floor going on it ?

 

[Chuck]

I'm not sure this is the reason, so treat it as a guess, but if some types of insulation get wet (die to condensation / leaks in the roof space) it creates a corrosive environment that attacks pipes. I've only seen this with steel pipes, but copper corrodes nicely too.

 

[Pat_R_]

Is it staying non habitable/ no floor going on it ?

just a storage floor over part of it.

 

[Pat_R_]

I'm not sure this is the reason, so treat it as a guess, but if some types of insulation get wet (die to condensation / leaks in the roof space) it creates a corrosive environment that attacks pipes. I've only seen this with steel pipes, but copper corrodes nicely too.

 

[Pat_R_]

Thank you Chuck. I hadn't thought of that, but it makes sense.

 

[ShaunCorbs]

Lagg it with pipe insulation doesn’t touch any insulation then tbh seen most bungalows with new insulation over the top of pipes with no problem

 

[Pat_R_]

Lagg it with pipe insulation doesn’t touch any insulation then tbh seen most bungalows with new insulation over the top of pipes with no problem

Thanks Shaun.