Title: Running Internet & Antenna Cables in Styrofoam: Best Solutions for Hidden Installation

Question

Hello Wanted to ask for advice - maybe someone has already done this. Namely, I have a house with a ground floor and a first floor on which there is styrofoam with glue and mesh. On the first floor there is an internet router with an antenna. I also have a router at the bottom - for now it is...

Zutket · Answer

How you lay the cables in polystyrene foam is only up to you and the facade contractor. It would be best to lay the cables in conduits so that in the future it is possible to replace or add a cable, but this involves larger cuts in the polystyrene.

dorsz0591 · Answer

I thought so too with this conduit, only it would have to be quite large skin, 5 cables plus a supply for 2 should go there

and will i get the connectors? Because, for example, 2 cables will go to the first room downstairs from the upper router, and the next one will go further, so you have to divide it somehow

jimasek · Answer

Styrofoam wires are a bad idea at all, and without additional insulation of a corrugated pipe, these wires - especially the antenna ones - will last you there for 2-3 years and then crumble to dust (poor quality screen).

Anonymous · Answer

I would start by talking to the foreman how he sees something like this and agreeing with him what you have a chance to do. Depends on what Styrofoam it is, how thick and all. One cable is a piece of cake, but five is the diameter and load, and polystyrene is a so-so construction material. You are doing it for yourself, so it would be appropriate for it to be permanent and good.
How I would do it would be a groove (gutter) for the bundle of cables through the styrofoam to the wall, fixing the cables flat to the wall, reconstructing the insulation. Over a single cable, I would consider whether or not to "melt" it into polystyrene. But it's a lot of work and money.

As for the conduit, it's basically just a cover for the cables, because forget that you will tighten something in the future when you go through corners. Cables laid once permanently, a large supply can be predicted. Or then repeat entertainment.

Outdoor TV cables in gel, with high shielding (>90dB). The twisted pair should also be basically external, but if it is 100% covered then a standard internal twisted pair could be considered.

When laying the strand, care must be taken not to crush it, bend it, stuff it, etc., which could deteriorate its properties. Bending radius min. 4 x diameter! unless you don't care much about the category.

Same with the TV cable.

jprzedworski · Answer

Without exaggeration. With the screen only a problem with grounding, and the impact of interference even less than inside the building. Interference usually comes from electrical devices, and more powerful ones, and these are usually inside the building, not outside. And at home, shielding makes no sense at all.

Anonymous · Answer

OT in terms of television: But that was for TV cables. N.B they are not grounded, except for lightning protection. And further regarding DVB-T/2: Oh no. One of the best DVB-T jammers are ... mopeds and scooters... ;) All you need is a lousy HDMI cable and a lousy antenna cable... For all those struggling with DVB-T reception - a good antenna cable is the basis of reception. End OT

jprzedworski · Answer

If we are talking about DVB-T, then yes. I was thinking UTP. These are resistant without shielding. I've been doing this for a few years and haven't had any problems. Of course, I don't work in a factory, but in a multi-person office, so industrial disturbances are not there.

dorsz0591 · Answer

I honestly admit that I now have an antenna connected with an ordinary white cable and the cable goes around the garage about 6 meters and is already 5 years old and nothing has happened to it and it is not secured at all.
Styrofoam is located 10 cm

Anonymous · Answer

Twisted pair yes - UTP. OT : It depends what you get - the current white TV cables can fall apart after one or two seasons - UV, water and heat ...

dorsz0591 · Answer

In the warehouse, they told me about the 6 twisted pair, supposedly very resistant - used by camera fitters

Anonymous · Answer

It's possible, but it's better to know what you want to buy yourself - manufacturer, type, Cu or CSS, wire or strand...

IC_Current · Answer

Wires can be run outside and polystyrene. Structurally, the Styrofoam itself will not be damaged. The cables MUST be external (black coating, gel inside the cable), otherwise, after a few years, the transmission parameters will deteriorate significantly and the cables will need to be replaced. Of course, cables from the top shelf.
Pipes should not be run under the façade (or anywhere else in changing environmental conditions), because water will begin to condense in them (especially that the dew point with properly made insulation should occur somewhere in the polystyrene foam. Water will constantly drip from such pipes, destroying the wires and facade.
Now the most important thing - the wires are laid in front of the polystyrene. If you cut styrofoam and mesh now, it's 100% impossible to repair such damage. After a few years, the putz will crack in this place. Even if the styrofoam master denied that something like this would not happen, you can always see the scars on the wall after a few years. If you want to run these wires, you need to make two holes in the polystyrene (top and bottom of the wall) and push a flexible rod between them, so as to crumble some polystyrene near the wall, but without destroying the mesh. Then, through such a puncture, the wires are pulled behind the rod.

KOCUREK1970 · Answer

It should be a gel twisted pair. The TV wires are also gelled. The wires are placed in front of the polystyrene, but if you don't take at least a sketch, photos of where the cable goes on the wall, I'm pretty sure that the wires will be damaged somewhere when anchoring the polystyrene.

dorsz0591 · Answer

And if I wanted to run the wires in the conduit, but let's say outside, do you have any solution to attach it?
Rather, it will not stick to the mesh itself, and if it moves, it will crumble.
Styrofoam is 10.

Anonymous · Answer

Consider also the possibility of running the wires inside ... Because the best moment, i.e. laying the wires before insulation, you missed. Maybe some kind of vertical ventilation duct?

brofran · Answer

I do not recommend. Since they are still unpainted, cut the mesh, cut out the furrows in the polystyrene and let the cables run in the conduit. Furrows foam, fill, and the foreman will paint.

viktor1950 · Answer

But you're thinking, outside the furrows, lay cables, foam, align, cover with a 10 cm mesh for joints and the rest will be done by a facade specialist.

[Solved] Title: Running Internet & Antenna Cables in Styrofoam: Best Solutions for Hidden Installation

How can I hide Internet and antenna cables in styrofoam on an insulated wall with the least visible and least invasive installation?

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Topic summary

FAQ

Quick Facts

Can I run internet and antenna cables directly in styrofoam?

What’s the least invasive way to route cables without cutting the façade mesh?

Should I put conduits under the façade?

Which cable types should I buy for outdoor or façade runs?

Is unshielded Cat6 (UTP) OK indoors, or do I need STP?

How tight can I bend Cat6 or coax without hurting performance?

Can I pull new cables later through corrugated conduit with corners?

How do I attach a conduit onto unpainted façade mesh?

Are white TV antenna cables OK outdoors long-term?

Do I need high-shielding coax for DVB-T/T2?

Should I pick external-rated or internal UTP if the run is fully embedded?

How many cables can I bundle, and will EPS hold them?

How should I branch Ethernet to multiple rooms? Can I daisy‑chain?

How can I avoid damaging hidden cables during insulation anchoring later?