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Topic Title: Ceiling void
Topic Summary: Is it permissable ?
Created On: 15 April 2014 09:14 PM
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 15 April 2014 09:14 PM
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Ampman

Posts: 1021
Joined: 06 February 2006

Evening .

I have a job where the builder is going to install 2 x 2 baton round the top of ceilings to creat a 2 inch void . & plaster board over .

My question is can i use this void for my cabling , save me lifting tons of floorboards

Cable will be rcd protected

cheers
 15 April 2014 09:18 PM
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daveparry1

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I don't see any problems with that Ampman.
 15 April 2014 09:19 PM
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aligarjon

Posts: 2867
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cables are permitted to be laid on top of plasterboard so i don't see why not. i would be inclined to clip the cables away from the battons and loop over the top if possible to avoid wayward screws.or maybe you could get him to cut the battons half an inch short both ends so that you can nip round the outside of them.

Gary

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Specialised Subject. The Bleedin Obvious. John Cleese
 15 April 2014 09:26 PM
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Ampman

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Joined: 06 February 2006

Cheers ,
 15 April 2014 10:02 PM
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spinlondon

Posts: 4439
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Where cables run through joists, or in this case batons, it is a requirement that the cables are provided with additional protection.
Unfortunately, use of an RCD is not an acceptable method of satisfying this requirement.
Acceptable methods are 50mm depth, protection against penetration by screws or nails, earthed sheath or earthed conduit or trunking.
 15 April 2014 10:11 PM
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Rulland

Posts: 472
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Around the battons, in a safe zone of 150mm, with RCD...............surely no different-and better-than T+E sitting on plasterboard ceiling?.

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Those who make no mistakes do very little work!!......
 15 April 2014 10:13 PM
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aligarjon

Posts: 2867
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with the thickness of the plasterboard you have a bit more than 50mm Spin. i wouldn't drill through them but you can go round the outside or over the top of them and just about be alright..

Gary

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Specialised Subject. The Bleedin Obvious. John Cleese
 15 April 2014 10:30 PM
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Fm

Posts: 709
Joined: 24 August 2011

Use Fp200
Safe plate over the battens where the cables pass
Energise circuit and let builder plasterboard. Only kidding
 16 April 2014 12:14 AM
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phantom9

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Originally posted by: Ampman

Evening .

I have a job where the builder is going to install 2 x 2 batten round the top of ceilings to create a 2 inch void . & plaster board over .

My question is can i use this void for my cabling , save me lifting tons of floorboards

Cable will be rcd protected

cheers


I would tell the builder to run the battens below the underside of the existing ceiling else he won't have anything to fix to.

Good tips from the other posters about running cables around the ends of the battens but keep them against the wall, there is no prescribed zone for a ceiling. And I would clip the cables along the top side of the battens against the existing ceiling to give peace of mind that wayward plasterboard screws wont find them!
 16 April 2014 09:29 AM
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AJJewsbury

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Use Fp200

Better still, BS 8436 (which FP 200 isn't AFAIK).
- Andy.
 16 April 2014 11:08 AM
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daveparry1

Posts: 6239
Joined: 04 July 2007

Correct Andy, although FP200 looks similar to BS8436 it's not listed as compliant where BS8436 (or some other protection) is required.
(although I feel that everyones being a bit OTT on this post!)
 16 April 2014 11:15 AM
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Parsley

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Spin's correct 522.6.100

Regards
 16 April 2014 11:42 AM
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colinhaggett

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Joined: 08 July 2004

How long do you think plaster board screws are? I take it that it's in a house, your lucky most builders just overtack.
 16 April 2014 12:20 PM
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AJJewsbury

Posts: 11550
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How long do you think plaster board screws are?

Anything up to 100mm are readily available - e.g. http://www.toolstation.com/sho...0mm/d90/sd3165/p15047

although I take your point - I've never used anything longer than 32mm.

- Andy.
 16 April 2014 11:37 PM
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largelunchbox

Posts: 373
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i dont care much for any of the suggestions so far, i would be getting the builder to fix the 2 x 2 about 10mm (or more if its available)below the ceiling thus giving you a nice space to run cables over the battons and fix to the ceiling, clipping cables to the side of battons with minimum depth available is risking penetration by screws that miss the battons and go up the side .
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