- Joined
- 17 May 2012
- Messages
- 10,783
- Reaction score
- 849
- Country
So, plan is 50mm insulation board, with 35mm backboxes, plasterboard, and skimmed.
My idea, which I hope will maintain vapour control and also give space for cable to avoid overheating risk, is to totally remove the 50mm board where the cables run from below the floor to the socket, and replace with 25mm board, leaving a 25mm gap, which along with the 10mm (or so) plasterboard will provide the right size space for the back box, and give room for cable and channel to run.
Does this sound like a good idea? How do people usually run cables over, or through, PIR? The insulation and plasterboard will both be stuck with foam, so no batten spaces etc.
Here's a pic I just made ...
My idea, which I hope will maintain vapour control and also give space for cable to avoid overheating risk, is to totally remove the 50mm board where the cables run from below the floor to the socket, and replace with 25mm board, leaving a 25mm gap, which along with the 10mm (or so) plasterboard will provide the right size space for the back box, and give room for cable and channel to run.
Does this sound like a good idea? How do people usually run cables over, or through, PIR? The insulation and plasterboard will both be stuck with foam, so no batten spaces etc.
Here's a pic I just made ...