The challenge was to fit a greenhouse onto 4 existing walls all of which are of different heights and not square to each other - the back wall runs off at an angle so the last roof sections had to be wedge-shaped. Being stone walls they are not level or straight vertically either.
I am delighted that it worked so well. It was still constructed back at the workshop after taking some on-site measurements.
In the end it looks just like a "normal" greenhouse.
Click on each