ᐅ The window frame is bulging. What does that mean?

Hello everyone,

my sliding door has a downward bow. What do you think about that? Unfortunately, it’s difficult to capture the bow in a photo. I gave it a try.

The frame sounds a bit hollow when tapped.

Thank you!

Obviously, the frame will be hollow, a hollow chamber profile for better thermal insulation. Unfortunately, as you already mentioned, nothing can be seen clearly in the picture.

Maybe it becomes clearer now (sometimes with and sometimes without marking).

And one last time. This is basically the second element going upward from the glass.

Hello,
in the photos, there does seem to be some warping. But hold a straightedge against it to see exactly how much it is. Is that in millimeters or centimeters?

Best regards,

Andreas

I think the problem lies elsewhere...