and I find the question logical, where should non-existent windows provide advantages in light incidence?
The only one talking about “non-existent windows” is you.
All of this is completely foreign and off-topic, when the OP is fundamentally _only_ informing themselves about roof shapes and I write about _what_ third gables can be used for.
You’re already acting as if a third gable without windows is a fact. That’s absurd.
I would feel sorry for the OP... if they even care.
Here again is what I wrote:
With basements, no sound insulation is needed; with 3 children, possibly an attic conversion with a fixed staircase for the parents or office. Living space under a hip roof is insufficient.
Shed roofs appear too bulky to many.
Staggered gable roofs have advantages regarding light incidence on poorly shaped plots and floor plans.
So the reference to a staggered gable roof without light incidence is logically unnecessary, since I never said the third gable should be without windows.
You’re completely off-topic!