When building a house, 2 weeks is nothing! If the following trades absolutely want a sealed construction, then you cover it with OSB for that long. What your window installer suggests is a lazy compromise.
And, how about ordering the window to fit correctly and meanwhile installing the wrong window temporarily?
Yes, I am meeting with the architect on site shortly. I will present this suggestion to him then.
Does the too small window even fit the aesthetics? Often it is adapted to the overall appearance
Yes, there are two windows exactly one above the other (basement and ground floor), he wisely measured the larger one (so correctly) and adapted the smaller one to it. The architect should have noticed that, and the masons are working here almost to the millimeter.
Yes, I am about to meet with the architect on the construction site now. I will also present this proposal to him there.
Yes, there are two windows exactly above each other (basement and ground floor), he wisely adjusted the larger measured one (so correctly) to the smaller one. The architect should have noticed that, the architect and the masons work here almost to the millimeter.
Yes, that's just how it is with craftsmanship. Things like that happen. He has already presented you with a solution involving reordering...