New windows with an unsightly gap between the glass and the seal

Hello everyone,

in our renovated old building, the windows were replaced about 10 months ago. They are windows from Feba – so a pretty decent quality, as far as I can judge. After moving in, I have now noticed that at two windows in the living room, a gap has formed on the outside between the glass and the seal. This gap is about 3-4 mm wide, so dirt and all sorts of things that are flying around outside collect there and can only be removed with a lot of effort. It also doesn't look really nice. Of course, one can live with it – but the windows also cost money and are supposed to provide peace of mind for the next 25 years. Is this within tolerance, or should I complain about it vehemently? The responsible craftsman company has unfortunately not yet commented. Thanks in advance.

What kind of fold is that between the sash frame and the seal? This dirty white…? I have never seen that before. I specifically checked at my place. We don’t have anything like that.

What kind of fold is that between the sash frame and the seal? That dirty white…? I have never seen that before. I specifically checked with me. We don’t have anything like that.

Frame with stop for middle seal = middle seal on the sash.

The matter is settled. The window fitter is coming tomorrow and will correct everything. It involves more effort, he said, because the pane has to be completely removed, etc., but of course it cannot remain like this. So very reasonable.