Installation of satellite dish on the roof

That's exactly how it is, that's why I'm asking you here [emoji6]. Who trusts anyone!?

Grym spoke of trust, hence my comment.

From my point of view, you are doing exactly the right thing. Asking questions where you are unsure, then listening to different perspectives and forming your own opinion [emoji1303]

Installation in my last apartment (on the balcony and wall mounting) I did myself, so nothing wild. This time installation on the hip roof (bungalow) is a bit more demanding. If I have the opportunity, I will mount it on the wall. On the roof I might also do it myself and if I have it done, it can’t be more expensive than with the developer.

Here's a sample from my contract.

Offer from our electrician:
Sat dish 90cm, accessories, multimeter, LNB 8 participants incl. wiring 6 connections living/bedrooms for €950 net

Offer from our electrician: Sat dish 90cm, accessories, multimeter, LNB 8 participants incl. cabling 6 connections living/sleeping rooms for €950 net

Sounds realistic.
Summarized, what is all needed overall to make it work?

- Sat dish
- 4-way LNB
- Mast
- Tile with feedthrough
- Rafter holder
- If no cold floor: feedthrough through the insulation/sealing layer
- Multiswitch for 8 participants
- Power connection for multiswitch
- Connection CU 10mm^2 single wire for potential equalization connection
- Cabling SAT cable to 6 rooms
- 6 simple SAT outlets flush-mounted
- Commissioning of the system

are you my electrician? your list is correct