Insulation in the window reveal - DIN

Hello,

does anyone know if insulation in the window reveal is mandatory? In other words, an accepted rule of technology?

The masonry is monolithic construction, i.e. only one stone.

Unfortunately, the construction company installed the window reveal very poorly and now I am worried that they will remove it if I write a notice of defects. Of course, nothing is contractually agreed.

Best regards

Does anyone know if insulation in the window reveal is mandatory? Like a recognized technical standard?

The masonry is monolithic construction, i.e. only one stone.

No, insulation is not needed there - that’s why you build monolithically.

Unfortunately, the construction company installed the window reveal very poorly

I don’t understand anything there. Please provide photos of how a reveal is installed.

I don’t understand anything there. Photos please, showing how a reveal is installed.

At many spots, a large amount of foam was applied generously and the window frame will disappear completely including the plaster. You can also see that on the yellow and white strip.

Foam partly 10 to 16mm and the reveal insulation about 35mm. Both together I find quite a lot.

A lot of foam has been generously applied in many places, and the window frame will completely disappear including the plaster. You can also see this on the yellow-white strip.

Foam partly 10 to 16mm and the reveal insulation about 35mm. Together I find both quite a lot.

Can you tell from the insulating foam or the color whether it is even suitable for the installation of the reveal insulation?

Foam has been generously applied in many places and the window frame will completely disappear including the plaster. You can also see this on the yellow and white strip.
Foam is partly 10 to 16mm and the reveal insulation about 35mm. Both together I find quite a lot.

Overall, this looks to me almost textbook foolishness. How does the tradesman justify bonding some - in my impression, random - insulation material in the foam bed?

That looks to me quite textbook nonsense overall. How does the incompetent craftsman justify bonding - by the way some - insulation material in the foam bed?

The site manager said the insulation was only fixed. The craftsman did not comment on this at all. They immediately built over it after the photos and my email. My expert only asked questions and gave hints. He left me unclear about what really is a defect and what is not.