ᐅ Window Check: Are the Ug and Uf values suitable for KFW55?

Hello everyone,
quick question about the current "state of the art" for windows.
We have Ug-values of 0.5 (I am sure that is fine) and Uf-values of 1.0. The lift-and-slide door has a Uf of 1.3, and the front door also has a Uf of 1.3.
The combined Uw across all elements is 0.77.
The whole construction will be Kfw55 – is that appropriate? I believe that is similar to what is required in our energy saving regulations.
Thanks for the brief feedback (I can’t change it now 😀)

The KfW calculation must include the required value for the windows.

Yep, that's what it says, but I was more interested in whether Uf values of around 0.8 are the standard nowadays.

For our KfW 70 house, we have windows with a Uw value (glass and frame combined) of 0.8 W/m²K.

0.9 overall value for windows and 0.7 for the exterior door – KFW70.

However, I find the question surprising because all of this is already included in the thermal insulation calculation.

And as you can see, this alone has little to do with just KFW55 or 70 😉

It was more out of curiosity. Our energy-saving regulations specify a Uf value of 1.1, but the window builder’s calculation shows a Uf of 1.0. I take away for myself that a Uf of 1.0 represents a good middle ground.