Routing cables through insulated plasterboard

Joined
26 Mar 2006
Messages
13
Reaction score
0
Location
Aberdeen
Country
United Kingdom
Hi,

I'm in the midst of wall mounting my TV, and putting up some power sockets and the AV cables neatly on the wall behind the TV. It's a solid brick wall with insulated plasterboard on top, the insulation is hard against the brick without any gap.

I was planning on running some trunking/conduit through the insulation to route the cables through, about half way up the wall down to the skirting board. I read that this is needed to protect the cables.

Any advice on how to run in the trunking? Should i cut a full length vertical channel in the plasterboard & insulation (seems a bit severe). Or can i just try to force the trunking through the insulation from the holes i've cut for sockets?

Any suggestions welcome...the less intrusive the better!! ;)
Cheers
 
Sponsored Links
Joined
26 Mar 2006
Messages
13
Reaction score
0
Location
Aberdeen
Country
United Kingdom
Thought that might be the case guess I'll need to cut a channel and cover it up properly then!
 
Joined
7 Jul 2010
Messages
39,226
Reaction score
4,869
Location
Retired to:
Country
Portugal
I was planning on running some trunking/conduit through the insulation to route the cables through, about half way up the wall down to the skirting board. I read that this is needed to protect the cables.
Not true - although a channel would be good for adding/removing/changing the audio/visual cables.
 
Sponsored Links
Joined
28 Jul 2009
Messages
7,519
Reaction score
727
Location
Kent
Country
United Kingdom
Thought that might be the case guess I'll need to cut a channel and cover it up properly then!
If you go down this route, I'll suggest fitting the largest possible trunking you can to allow the cables to be changed/added to in the future.
 
Joined
15 Jun 2021
Messages
3,460
Reaction score
946
Location
Wales
Country
United Kingdom
I read that this is needed to protect the cables.
It can depend on the insulation material.
If your insulated plasterboard has the cheapest expanded polystyrene insulation, then yes, the cables could need protection to help avoid a damaging chemical reaction with the PVC.
If you have PIR boards, the cables will be fine - but as above, conduits can be useful :)
 
Joined
28 Jul 2006
Messages
21,580
Reaction score
2,399
Location
Oxfordshire
Country
United Kingdom
If you go down this route, I'll suggest fitting the largest possible trunking you can to allow the cables to be changed/added to in the future.
Indeed

Remember that AV cables come with connectors moulded on both ends, so you’ll need trunking big enough to get all the cables in plus extra space to be able to push an HDMI, etc plug through as well.
 
Joined
22 Jul 2016
Messages
5,548
Reaction score
979
Country
United Kingdom
Probably impossible/impractical in your case but….

I was struck when watching a YouTube video on SIPS buildings, that the builders used a blow lamp to heat a bloody huge ball bearing and dropped it into the panel. This basically sank through the insulation and dropped out the bottom.
I thought it was a brilliant on site solution.
 
Joined
28 Jul 2009
Messages
7,519
Reaction score
727
Location
Kent
Country
United Kingdom
Probably impossible/impractical in your case but….

I was struck when watching a YouTube video on SIPS buildings, that the builders used a blow lamp to heat a bloody huge ball bearing and dropped it into the panel. This basically sank through the insulation and dropped out the bottom.
I thought it was a brilliant on site solution.
Remember grenfell:unsure:

Seriously though I've used a hot air gun to create a channel a few times, I've also seen metal EDIT: condiut heated and pushed into place.
 
Last edited:
Joined
26 Mar 2006
Messages
13
Reaction score
0
Location
Aberdeen
Country
United Kingdom
The heated ball method looks pretty interesting...dunno if i fancy trying to catch it before it lands on my living room carpet right enough haha :)
 
Joined
20 Aug 2009
Messages
9,629
Reaction score
1,282
Location
Dorset
Country
United Kingdom
I'm no expert when it comes to building insulation, but to remove such a large trunking, and not be able to replace it, does sound like a bad idea.

Personally I'd be thinking about either using some attractive D-line trunking; or building a false wall.
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Sponsored Links
Top