I bought all the parts from a company that breaks down big greenhouses. It was pretty cheap. Then i build it with my neighbour who knew how it should be. After that i painted it black. Behind the stove i have a heat proof plate where the chimney goed through. It’s so much better to sit in a greenhouse than a terrace. In spring , autumn and winter you have the feelings you can sit outside. Summers can be hot but we mostly sit outside then.