Enough daylight in the children's rooms?

On the east side it would not fit, because then the children's room window would no longer visually fit between the two small windows on the ground floor.

Yes, it would. You can enlarge the window evenly on both sides, not just on one side.

On the west side that does not work, because the chimney in the bedroom limits the space for an additional window width.

6.5 cm on each side is still possible in the bedroom.

How high is your knee wall and what is the roof pitch? And why shouldn’t a wider window fit? Ours are 1.26 m wide (about 2 m high) and I think they couldn’t have been smaller (room size 16 m2).

The finished height inside will probably be about 1.30 m. The roof pitch is 42 degrees. Reasons against wider windows can be found in my last post.

One reason that I think speaks against skylights is the southern location. In summer, they would be shaded all the time anyway.

What do you mean by that? We would then have 3 southern skylights, right? There would be enough light. I rather think that on warm days it might get too hot inside the rooms.

Then just make the children's rooms bigger... with the views it doesn't matter anyway ;) 3 roof windows facing south but please only with roller shutters.

What do you mean by that? We would then have 3 southern skylights, right? There would be enough light. I rather think that it might get too warm in the rooms on warm days

That’s EXACTLY what I mean. Southern skylights make it nice and warm in summer, and usually there are blinds in front of them to shade the room. Therefore, I would always avoid skylights on that side if they are bedrooms.

Yes. You can enlarge the window evenly on both sides and not just on one side.

6.5 cm on each side is still doable in the bedroom.

That would be worth considering. In the west, certainly no problem. Here, on the ground floor, the large window area would just have to be extended by 6.5 cm towards the south as well. In the east, that would only be at the expense of the width for the two small ground floor windows (chamber and guest WC), since the window above no longer "fits in between."

Then just make the children's rooms bigger... with the views, it doesn't really matter anyway ;)

I'm more of a symmetrical type, which I wouldn't like. So unfortunately that option is off the table.

3 skylights facing south but only with blinds, please.

That's true.

That's EXACTLY what I mean. Southern skylights make it nice and warm in summer, and usually there are blinds in front of them to shade the room. Therefore, I would always avoid skylights on that side if they are bedrooms.

Especially since I wouldn't really like 3 skylights on the south side from an exterior appearance perspective.

But one more important question to the experts: We already have our "building permit" (here: approval exemption with a development plan). Are window changes (e.g., due to statics) easily doable without having to involve the building authority again?

Hello,

Now the question: Would it make sense to have another roof window in the children's rooms here, or is there any reason against it?

The planned lighting area is a good 2.3 sqm per room; building regulations require ⅛ of the floor area. So the rooms are bright enough in any case. I rarely understand all the discussions about - comparatively - large window areas in relation to the floor area.

I would only install double casement windows if all other options are exhausted.

Best regards from the Rhineland