Window installation correct or sealing tape faulty?

Hello everyone,

I am new here and am currently building with a construction company. Today, an acquaintance of ours was at the construction site to measure the front door, since we are not having it installed by the construction company and are obtaining it from the acquaintance or his employer. The acquaintance, who is also a window installer, criticized the windows installed by the construction company. He was of the opinion that sealing foil should be installed all around the window. In our entire house and in other houses built by the construction company, it is only applied underneath. I have attached a picture. Now we are unsure whether the installation method is still correct and if window installers simply have different installation methods that might still be correct. Additionally, he believed that for large windows, a bracket should have been installed in the middle. Currently, the window can be wobbled with moderate force at the middle bar. I would be grateful for any information on this!

The acquaintance is also right about the slide. It must be present on all 4 sides. Which facade are you getting? Plaster, brick, wooden cladding? What else can be seen in the picture. That the windows are not properly fixed.. Is there possibly a picture where one can see the exact fixing?

There is a plastering strip attached. When the reveal is plastered, the window is also airtight on the inside. I did not understand the part about wobbling.

Make proper pictures in sufficient quantity! It doesn’t cost anything anymore unless you scan printed or developed photos :rolleyes:

I agree with . It would definitely be good if you added clearly more appropriate images. Then you can surely get better help.

The windows must be installed all around with sealing tape. The roller shutter box must also be sealed with sealing tape. Moreover, it looks as if the windows are only foamed in the insulation layer and merely fastened with claws. That is wrong; windows must be firmly connected to the masonry. How is the weight supported downwards?