Just for clarity, the adjustable gap is in the top panel of the door, not over the door. An improvement would be to put some sort of vent as high up on the ends as could be, to allow for the rising hot air. I have pondered this but can’t see a solution because this is where a lot of the polythene has been gathered up because of the curve of the hoop so even if one constructed a wooden frame to put a vent in, it would be difficult to fix this frame to the hoops.
I would think that it would be a definite advantage to have double sliding doors, but at the time I couldn’t afford to get them, c’est la vie! Jeanette
