Chasing conduit into brick wall

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Hello,

Not sure this is the right forum, but I'm wanting to know some info on channeling into a wall to run conduit...

Basically I want to put 2 20mm plastic conduit tubes in a wall so I can run cables from my lounge into the loft. I have already installed the back box. Is it ok to cut a channel 40mm wide x 20mm deep to run this plastic conduit? This won't affect the structure of the wall will it? I'd like to cut 1 single wide channel and run the 20mm conduit in parallel.

My Walls are double brick cavity filled with render and plaster on the internals. The reason I want to run 2 conduit tubes is I have lots of cables I want to get into the lounge for audio, video, satellite and networking!

Any advice would be appreciated.

Thanks
 
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I forgot to say, I want to then plaster over the conduit so the cables and conduit cannot be seen. Then if I want to pull some more cables in for future upgrades it should be easy!
 
The only thing I'd say is that a 20mm conduit isn't that big - especially if you are wanting to pull (eg) TV coax cables through. You might be better looking at a small rectangular trunking which in the same size of chase would give you more space for cables. I've been helping a friend with his bungalow - due to his plans for high end AV, we've used 25x40 trunking down to one box as we expect to be wanting to feed multiple HDMI leads down (amongst others) :eek:

If your plaster is thick enough, a wide oval conduit (or two) might avoid the need to chase into brick - whether that's an issue depends on how hard your brick is, and what tools are to hand.

With a bit of cutting, it's fairly easy to open up a hole in most boxes so you can get the very end of the conduit into the box (ie avoid having a hidden dogleg behind the plaster).
 
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