My Avena greenhouse from Hobbyväxthus.se has withstood all storms and hard vidbyar even with doors open.
To a gap now blown apart is probably my own fault as I don't have inspected the automatic openers often enough. The reason for this was relaxed to one of the automatic openers broke down in its bracket.
No fara rooftop! Glass or, rather, the 10 mm thick channel plastic that is virtually unbreakable was great and nice. I just ordered the new frame parts to the door and fitted it together, it took 4 minutes.
Also bought into 4 piece new automatic openers with a little stronger springs, replace the other 3 gaps when I're at.