DIY - Trunking with a corner

WeegyAVLover

Distinguished Member
Hi All,

As a lot of you will know from my other thread, I am having to open the channel in my wall where my broken HDMI cables are and re-run the HDMI cables but this time use trunking.

However my run for the cables is an L shape and I wondered what the best way is to do the corner? As I am worried (maybe unnecessarily) that when plastered over that the plaster may seep into any joint and stick to the cable.

Am I worrying unnecessarily? have any of you had this problem? How did you get round it?
 

its_all_Greek

Distinguished Member
You can get preformed "Flat Bends" for most manufacturers and sizes of trunking. If not then cut 45 degree angles across the trunking and lid then fix them as close as you can then just masking or parcel or gaffer tape across any gaps you have prior to plastering.
 

WeegyAVLover

Distinguished Member
My wall is solid brick with about 25mm of plaster on it (Victorian Built).

I was down at B&Q (on my lunch hour just now) and I think for trunking my hdmi cables down a 25x16 would be to narrow. I seen a 40x16 which was better. However I think my sweet spot would be 40x20. Sadly the next size up was 40x25 and I am worried it may be stick out too far.

I wanted to provide a link but when checked out B&Q online it was not listed.

Not sure why there is an issue with trunking 40x25. I have found D-Line stuff in that measurement but wanted the rectangle shape for the room rather than the D shape.
 
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WeegyAVLover

Distinguished Member
You can get preformed "Flat Bends" for most manufacturers and sizes of trunking. If not then cut 45 degree angles across the trunking and lid then fix them as close as you can then just masking or parcel or gaffer tape across any gaps you have prior to plastering.
This is the type of soluion I was considering and wanted to see if others thought this was a good idea or if it is silly.

I would have thanked you twice if I could have.
 

its_all_Greek

Distinguished Member
My wall is solid brick with about 25mm of plaster on it (Victorian Built).

I was down at B&Q (on my lunch hour just now) and I think for trunking my hdmi cables down a 25x16 would be to narrow. I seen a 40x16 which was better. However I think my sweet spot would be 40x20. Sadly the next size up was 40x25 and I am worried it may be stick out too far.

I wanted to provide a link but when checked out B&Q online it was not listed.

Not sure why there is an issue with trunking 40x25. I have found D-Line stuff in that measurement but wanted the rectangle shape for the room rather than the D shape.
I know it would be a pain in the arse, but could you not take 5ish mm out of your brick??
or is proper old Engineering brick??

Just a thought but what is on the other side of the wall, if its a "to be" decorated room, you could always run the cables on that side.....
 

ldoodle

Distinguished Member
How long is the horizontal run? If it's only minimal I'd go at a slight angle from top to bottom.

If it's a big run, can you go down into the floor below (i.e. is it a suspended floor). Or go up into the ceiling, through the joists and back down.

Having done exactly what you want to do (L shaped trunking run), I would never do it again. Although it's possible, it's an absolute pain in the ass re-running cables.

If you do go ahead and do it, try to avoid 90 degree angles. Maybe a 45 degree would be better so you go straight down, then 45 degree, then straight along.

Like this:

|
|
|
\ _____

rather than this:

|
|
|_____
 

WeegyAVLover

Distinguished Member
Victorian house , the bricks will be like bell metal :eek:
could well be, but i seem to remember that weegie is a big slobbering second rower, so could probably channel the wall with his teeth. :smashin:
You are right the bricks are made of adamantium I think...

However call me a slobbering second row to my face and it will be the last thing you do.... :D

I am a whale-ish, brutal, lumbering, Beast of a front row!

I am however guys walking a tightrope here.... My wife has been very, very understanding with my stupidity here and by all rights we should be enjoying our lovely finished livingroom but we are not because of this.

She is happy for me to chisel the plaster out, which I will do by hand to keep the mess and dust down to a minimum. However if I start saying I need to break ot the chisel setting on my sds drill and gouge the wall... I fear for my man veg!

I think the 45 deg angle might work but we will have to wait and see....

My wall is something like this....

ignore this |
_________|


ignore this |
ignore this |
_________/

Looks like I am just going to have to make do.
 
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Wahreo

Distinguished Member
Not read the entire thread but I would chase the wall out, either a grinder or wall chaser with vacuum.

I bury pipes in the wall all the time, Victorian bricks aren't too bad.

Whack some conduit in, fill with bonding/hardwall and skim with gyproc easi-fill. Job done.
 

aVdub

Distinguished Member
Will you need to move the cables once plastered in?

If so, any lips (joins etc) can be a real pain to get some cable past.
 

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