So today I started topping up the existing 100mm insulation in our flat with 200mm Krauf stuff. I've read on various sites that you're not to cover any electrical wiring with insulation due to the fact you'll be de-rating the current carrying capacity of the cable, but the consensus is lighting cable is alright to cover as even when de-rated with insulation it's still often within specs.
Unfortunately ALL wiring goes through the loft - cooker cable, shower cable, ring mains etc so there was no way I could simply lay insulation without giving a thought to the location of cabling. There is very little slack in all cables, but as they've been mostly clipped neatly to rafters I decided to cut the new insulation so as to leave a small gap between the insulation and any cables.
If you could check the following photos and give your opinions on it, is the installation suitable and could I have done anything better etc? it would be appreciated
(also what's the black stuff on the first photo..? - it's above a kitchen so I assume moisture/mould?)
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Unfortunately ALL wiring goes through the loft - cooker cable, shower cable, ring mains etc so there was no way I could simply lay insulation without giving a thought to the location of cabling. There is very little slack in all cables, but as they've been mostly clipped neatly to rafters I decided to cut the new insulation so as to leave a small gap between the insulation and any cables.
If you could check the following photos and give your opinions on it, is the installation suitable and could I have done anything better etc? it would be appreciated
(also what's the black stuff on the first photo..? - it's above a kitchen so I assume moisture/mould?)
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