ᐅ How to Make a Flush-Mounted Cable Duct Yourself?

Created on: 12 Feb 2023 16:51
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Gooosee159
Hello

We have a new build that will be finished soon.

Unfortunately, the developer did not offer an in-wall conduit.

Can we install it ourselves afterwards?
Our wall consists of 15cm (6 inches) sand-lime brick plus insulation.
Our TV wall is the exterior wall.

If yes, what would you recommend?
How wide and deep should it be?

1 power cable, 4 HDMI cables, and 1 USB cable need to fit inside the conduit.
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WilderSueden
12 Feb 2023 23:31
Gooosee159 schrieb:

Can we install that ourselves afterwards?
What exactly is already completed? You are talking about the developer; usually, you get the house ready to move in, possibly without the floors. That is different from working yourself on the shell of the building.
You can disregard structural questions. Properly, one chisels vertically, so it only affects a very narrow strip.
11ant13 Feb 2023 01:58
Gooosee159 schrieb:

Unfortunately, the developer did not offer an in-wall cable duct.

From your thread history, I understand that you actually mean a general contractor. The common but misguided assumption that “building with a GC” means “building without your own scope of work and deliverables” often leads to these kinds of issues. I think @Stephan—’s suggestion to use a drywall partition is the “logical” solution—authentic, because that’s typical for GCs to fix missed detailed planning by adding drywall construction. Another option would be to drill through the wall and recess the cable duct into the insulation layer. However, the drywall partition is the technically cleaner alternative and can also be used to visually divide the wall, for example, by building a kind of mantel around the TV or the side panels of a wall-integrated shelving unit.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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Gooosee159
13 Feb 2023 06:55
@WilderSueden Our biggest concerns are about the structural integrity and whether a thermal bridge could form there.

Is that something we don’t need to worry about?

I found a cable duct that is 6cm deep (2.4 inches), with an outer diameter of 5cm (2 inches),

and it’s 8cm wide (3.1 inches), so all cables should fit.

Yes, the cable duct would of course be vertically channeled, placed inside, and then covered by us with filler.

The walls are already plastered, and no, we were not allowed to do any work during the rough construction phase; only after handover can we start working ourselves.

@11ant Yes, a developer or general contractor isn’t ideal, but if we hadn’t done it that way, we still wouldn’t have a house.

And no, a drywall partition isn’t possible because the wall where the TV goes is about 10m long (33 feet) and runs through the dining room and kitchen.
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Stephan—
13 Feb 2023 07:27
Thermal bridge: Only affected if the insulation is disturbed or removed.
Structural integrity: Only affected if material is removed from the brickwork.
Would it be possible to provide the floor plan?
I will stick with the surface-mounted option. If necessary, then not the entire 10m (33 feet) area, but only around the TV and, as @11ant suggested, additionally expand it for the eyecatcher use.
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SoL
13 Feb 2023 07:45
A (probably perceived as unnecessary) suggestion from the old building side: Use a white flat cable duct that lies along the wall, and that’s it. After two days, no one will be bothered by it anymore...

I often wonder how perfect some things have to be.
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Bausparfuchs
13 Feb 2023 07:48
I wouldn’t refer to the insulation thickness as the wall thickness. A 15cm (6 inches) exterior wall is very thin. It might still be structurally feasible in some way, but it’s not practical.

Even as an interior wall, I would consider that too thin. At this point, though, it can’t be changed anymore.

Incorporating a cable duct into the wall will be difficult. As I mentioned before, I would remove at most 1cm (0.4 inches) from the wall thickness, regardless of the overall width. Then, you could actually install a drywall partition in front of it.