After four different 'building' sessions I've finally finished the growhouse. I'm quite impressed with it (and the fact I managed to actually build it without too many problems) but I can already foresee a few problems. The fact that the sliding doors are in a fairly wide gutter, meaning they'll rattle in the wind is the biggest. Still, only time will tell. The shelves are suspended tubing, but unfortunately are too far apart for the pots I'm using so I've had to improvise with cardboard until I can get to the shop.