Loft insulation and shower cable

stealthwolf · 28 Dec 2020

I know covering an electric shower cable in loft insulation can cause it to overheat. What can I use to protect the cable? It’s fairly tight against the joists so I wouldn’t be able lift it above the insulation.

I’ve already boarded two thirds of the loft. The area over the landing and bathroom have been left until last. I would want to maximise insulation and boarding without compromising the electric shower cable.

How much “space” does there need to be around a shower cable? Is a standard U channel conduit too small? What about a length of guttering?

sparxxxx · 28 Dec 2020

Can you lift the cable so it lies on top of the insulation

stealthwolf · 28 Dec 2020

sparxxxx said:
Can you lift the cable so it lies on top of the insulation

Sadly not. There’s not enough slack. It will probably go over the base 100mm insulation but not the 170mm top up.

My plan is to cut the insulation to leave an empty gap around the cable. I need to know how much space to give it and ideally “cover” or protect it the way one might with covers that go over down lighters.

sparxxxx · 28 Dec 2020

Problem is these heath robinsons may or may not work and give a false sense of security. I would cut and extend the cable using junction boxes like these https://www.tlc-direct.co.uk/Products/AAJB60.html, do you know the cable size?

winston1 · 28 Dec 2020

sparxxxx said:
Can you lift the cable so it lies on top of the insulation

Read the first paragraph of his post.

sparxxxx · 28 Dec 2020

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Loft insulation and shower cable

stealthwolf

sparxxxx

stealthwolf

sparxxxx

winston1

sparxxxx

DIYnot Local

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