excellent kit, well detailed instructions, securely packed and delivered. cant fault it. we had the triple therm option, i have one electric radiator on a timer to go of at 3pm and it is still nice and warm in there at 7am the next day before the heater kicks back in. (its frosty outside). Works great at our school as a mini classroom and fits 16-18 students comfortably with space for resources. managed to build it on my own though it would obviously be faster with 2. The head teacher is already scoping out places to put another one.
Went together well had a couple of twisted timbers only one spare, struggled to straighten and fit, sorted in the end. Needed a little more clarification on ridge of shingles, after a quick search on internet sorted. On the whole very happy with the final result, build took 2 men just over 3 days which included the lean-to and the internal wall.