so last year, I changed my solar system. the technician undid a screw on the roof in an attempt to remove the old holders. we then decided to re-use them, and re-tightened the screw. when the solar installation was done, I sealed everything with sika 221, including that screw and the cable channel into the interior.
yet now I have severe water ingress whenever it rains.
I have attempted several times to broaden and intensify all seals, but to no avail.
access is limited, but I cannot figure out where any leak might be left. I also see no damage to the roof itself.
is there any way to find the leak/s and seal them off without removing the entire solar system? I am at wit's end.