Revisions log for Answer #524
This is the answer to the question How to fix balcony leaking? The water is coming through the ceiling
Revision 1
Of course, I can only assess the situation from the picture.
The surface waterproofing should be stretched to a height of 15 cm vertically. This is not possible in the observed situation, so a drainage channel would have to be installed in front of the window or door front.
However, this alone will not solve the problem!
Water from precipitation must be diverted away from the facade front, and a leak in the existing surface seal can be assumed. Removing a door or window is a drastic measure. And would only make sense if everything was leaking all the time!
So remove the first two rows of panels and see what the open structure looks like in terms of sealing.