I'm tiling all the rooms (except the bedrooms/kids rooms), so far so good.
Question for you:
What flooring have you used in the bedrooms? What can you recommend? I have a particularly hard time with the children's room. To what extent do you need to consider screed flooring?
Tile including tile adhesive I have about 13/14mm, vinyl depending on manufacturer 8-9mm, of course could be thicker, but:
What if I want to use different flooring in the bedrooms? Does it even make sense to adjust the screed by that 5-6mm?
If ceramic tile is to be used as flooring, the greater thickness of the installation should really be considered at the screed stage.
In other rooms (which have become lower due to other flooring), the screed is troweled in any case in the standard way before the flooring is laid.
The 5-6 mm you mention are not exorbitant and a good transition profile will technically overcome them without any problems, but the rule of thumb is that from 4 mm of height offset onwards there is a risk of tripping.
However, please note (to reassure yourself) that surfaces that have been poured or troweled are never "rock solid"!!!
Thus, if the lower room is filled in as a ramp about 50 cm long in front of the door, it would technically be perfectly fine.
If the upper floor pavement is changed in the future and the "ramp" proves uncomfortable, the "ledge" will simply be sanded down and thus brought into compliance with the required transition height.
This procedure complies with the rules – and therefore really isn't a serious problem for the decking!
It is advisable that already at the planning stage, the screed technician knows that he will have to level the surfaces.
And then he can see how much extra work would be needed for a thicker screed, whether the height of the doors would then be correct, etc.
There's still a whole "rat's tail" of planning needed.
Simply making the screed (on which the tiles will be laid) thinner would be simple logic, but too shortsighted.
A minimum thickness (and therefore load-bearing capacity) must be guaranteed.
And if he had simply laid thicker tiles, the height measurements (in relation to the meterage attachment plan) would no longer be correct, which would affect subsequent transactions.
The easiest way is to install everything at the same height and then (in rooms without a tile floor) fill in the door area!
When choosing the thickness of your screed, it's absolutely wise to consider the flooring so that when in doubt, you don't have stumps. You may need to adjust the screed later – but I think it would be odd not to adjust the screed in the beginning.
We gave up the adjustment and made up the difference with thicker impact soundproofing.
Everything except tiles is ok in my opinion. Depends on your personal taste and wallet.
Parquet was too expensive for me for the children's rooms, vinyl has too much plastic (evil softeners (let's leave aside at this point whether this is true or not)), so it has become a decent laminate.
There are also some with, for example, 12mm height, so you have less difference to the tiles.