thermal separation entrance of the house

Hello everyone,

I am currently working on how to implement the thermal separation between our entrance area and the paving.
The current status is that the 160mm perimeter insulation comes up from the basement and currently ends 19 cm below zero level.
The door including the glass elements stands 1cm above the sealing level.
I hope you can roughly understand what I mean...

Now I am still thinking about how to thermally separate the area in the best possible way.
Attached is an idea of how I imagine it.

That is, to double the perimeter with 6cm more, and to glue a 2cm Styrodur board vertically against the floor structure and then slope it upwards towards zero to 1cm?
Thus, the first row of stones would have to be cut diagonally to make the Styrodur as thick as possible.

What do you think of this approach?

I look forward to feedback. I hope you can make sense of my pictures.

It's the same issue as with my terrace openings.

For me, it looks like this and then paving stones or tiles will go on top.

yes, that's how I did it with the sliding door as well, but there the "overhang" of the window element was larger...1cm is really very scant, I must say....the advantage there was that only 2cm had to be "inserted" instead of 8cm of paving...makes it thermally somewhat better

The losses that an 8 cm adjacent paving brings with it are so minimal that the very thoughts about them are not really worth the time.

at the 6m entrance area too? Ours goes as an L around the corner, I do believe that at the moment I have significant losses since the entrance so far leaves the sealing visible on the outside... for this reason better to think once more whether I should place a 20mm Styro or a 30mm and then cut it at an angle I thought? The biggest problem will probably be cutting the Styro crosswise I suppose....

Well, assuming the door frame has a U-value of 1.0; then you have losses over the year of approx. 6m x 0.08m x 1.0 W/m²K x 20K x 1600h = 15 kWh. Costs about 80 cents/year, with insulation you might save 30%.. ergo 25 cents/year...