methods of running cables

[neilyboy]

I have been asked to fit some new sockets and lights in a room on the external wall,the wall is insulated with kingspan and there is no gaps between any framing or the kingspan.
There are no other sockets/switches on this wall.I can get above the room and limited access at floor level if I lift the chipboard.
My question is how do I get the cables down/up the walls ?

 

[brianmoooore]

There should be a gap behind the insulation.

 

[neilyboy]

There should be a gap behind the insulation.

No,nothing,I cut a socket size piece of plasterboard out its a kingspan sheet with another sheet behind it total depth is probably 100mm ish with the back sheet hard against the osb sheet used to form the wall

 

[littlespark]

Looks like a job for a piece of 16mm pvc trunking lid.

I can’t see this happening without more holes being cut.


I have, once, drilled right through an upstairs socket box to outside, black pvc conduit and end boxes vertically, then drilled back into a be socket. (Was close to a black pvc down pipe)
But that was solid block walls and they didn’t want their decoration disturbed.

 

[DefyG]

If no gap per #2 (there should be air gap I would have thought for ventilation), treat it like any other solid wall.

 

[neilyboy]

If no gap per #2 (there should be air gap I would have thought for ventilation), treat it like any other solid wall.

yes had thought about this but explaining that to the householders is very..difficult

Looks like a job for a piece of 16mm pvc trunking lid.

I can’t see this happening without more holes being cut.


I have, once, drilled right through an upstairs socket box to outside, black pvc conduit and end boxes vertically, then drilled back into a be socket. (Was close to a black pvc down pipe)
But that was solid block walls and they didn’t want their decoration disturbed.

that is thinking outside of the box ...