Change of the size of roof windows after building permit

Of course, they are only supportive. That doesn’t mean you couldn’t still take nicer bigger ones. With reasonable effort, of course. A room is supposed to be nice too, not just functional.

Of course, they are only supportive.

No, of course not. Your "concerns" would have sounded justified if these windows were the "main contributors" in terms of lighting in their respective rooms, or if they were emergency exits or chimney sweep exits. But where they are just a small turbo button for the light coming sufficiently from the gable side, any roof truss tinkering is disproportionate to the additional square centimeters of glass area.

Matter of taste, right? For you it’s not proportional, but for others maybe it is. We don’t know how much a joist replacement costs. After all, a long joist can always be replaced by a shorter one (the longer, the significantly more expensive). That requires more construction timber for the replacement, but also mostly of the shorter kind, various angles and stuff, and labor time, although the hourly wage in that area shouldn’t swallow thousands. We had planned a replacement to move the retractable ladder, but then abandoned it again. Cost-wise, it was a joke, no kidding!

Matter of taste, right? For you, it’s not worth it, but maybe for others it is. We don’t know how much a beam replacement costs. After all, a long rafter can always be replaced by a shorter one (the longer, the significantly more expensive). That requires more construction timber for the replacement, but also mostly of the shorter variety, various angles and stuff, and labor time, although the hourly wage in this field shouldn’t cost thousands. We had planned a beam replacement to relocate the folding attic ladder, but then discarded the idea. Cost-wise it was a joke, no kidding!

We also don’t know the price yet. It probably depends on how motivated the carpenter is and whether he has time. They also need to get their own work done. But I also think it won’t be insanely expensive. Our only problem is that the roofer, who is installing the double-wing windows, needs the measurements before the roof frame is built. If the carpenter then complicates things, the roofer will supply the wrong windows. I am currently trying to get a rafter plan and maybe I can contact the carpenter beforehand. I think here the decisive factor is less the price and more the effort and coordination.

Spoke with the carpenters, 74 cm wide double casement windows are possible without a lintel. At 94 cm, a lintel would have to be installed. I can well imagine this in the bathroom, on the south side we are still undecided - won't it get too hot in the summer and don't you usually have the external roller shutter down anyway? The height is 118 cm for all.

doesn't it get too hot in the summer and don't you very often have the exterior roller blind down then?

I believe we have almost never sold double casement windows without shading.

Height is 118 cm for all.

Actually 68 cm, at 35° DN.