Once up the shed is very sturdy. The floor is quite flimsy and you really need to make sure it is on a flat, smooth base. I used slabs and as you can see fro the photos the floor is not perfectly flat. The instructions were easy to follow, however it was one of the most awkward self builds projects I have undertaken (Took about 12 hours). It states on the instructions not to do it on a windy day but even in a slight breeze I had to get my partner (it really does need two people) to hold three walls together while I struggled to get segments slotted in place. There are a few security concerns with the hinges and door locks in that they are only secured with self tapping screws and could be easily removed. These should at least have had locking nuts or the hinges/bolt been folded back over the screws in order to make it more secure. Time will tell if it beats a wooden shed with its maintenance woes.