ᐅ Which Cat cables should be installed on the exterior wall? Issues with moisture?

Hello everyone,
as I already mentioned in another thread, our internet connection in the house is quite basic, relying on Wi-Fi and repeaters. Now I have the following thought:
In a few days, work will begin on the facade. It will receive a new plaster finish. This would be a good opportunity to install additional cables on the exterior wall. The plan is to run wiring for extra lighting on the facade and at least two cables (3 x 2.5 mm2 (3 x 0.01 inch2)) for infrared heaters, which might be installed later under a patio cover. For this, corresponding channels will be cut into the existing facade and then replastered.
Now the question is: is it possible to run Cat cables along the facade to provide internet to all floors through wired connections? We would drill a hole in the exterior wall at the spot where the “router” is located in the living room and run the cables on the outside wall to the respective rooms. I assume moisture protection needs to be considered here? What type of cables would be required? Cat 5 should definitely be sufficient, right? What about potential moisture issues? Running cables along the exterior wall is, of course, not the most elegant solution but certainly the easiest.
Thanks a lot 🙂

There are cables designed for outdoor use. I would choose those.

Would a cable be run from the router to a switch, and then corresponding lines branched off from the switch and routed through the façade into the respective rooms?

Would it be an alternative to use the powerline for internet?
For example, with an AVM FRITZ!Powerline 1260 single adapter

Hello Schimi,

a good idea if there are no other alternatives 🙂

Just have a look at Cat6/7 underground cable. They are a bit more expensive but should be the best solution for this project.

Schimi1791 schrieb:

Would you then run a cable from the router to a switch, and from the switch branch out cables that go along the exterior wall into the respective rooms?

For example.
Do you want to install corresponding sockets in the rooms, or just pull 1–2 cables to set up additional access points?

Schimi1791 schrieb:

Would using the electrical wiring for internet be an alternative?
For example, with an AVM FRITZ!Powerline 1260 single adapter

No, forget about that quickly 🙂

netuser schrieb:

...
a good idea if there are no other options 🙂
...

We have finished the interior renovation. Laying cables now would be considerably more complicated.

netuser schrieb:

...
Just look for CAT6/7 underground cable. They are a bit more expensive but should be the best solution for this project.

Is the extra cost really worth it for the average user? Or is it more of an investment for the (distant) future?

netuser schrieb:

For example.
Do you want to install appropriate sockets in the rooms or just run one or two cables to set up additional access points?
...

Well, ideally four (double) sockets should be installed. That way, relevant devices could connect via cable to the global network. However, that would mean running cables around the entire exterior of the house.

A silly(?) question: Doesn’t a switch reduce the bandwidth?

netuser schrieb:

...
no, forget about that quickly 🙂

That bad?