the area that it heated squared off as the large room alone is 12ft one side the other is 5 meter wide and then goes mixed between 7ft and 10 ft down the side
so 56ft x 12ft area some of it was a concrete build and walls halfway up the rest was insulated this is the barebones photos before insulation was fitted to the building 100mm knauf insulation to the sides whilst above big room had 200mm of normal insulation within it
whilst where the car is had 100mm of insulation within the sides and also within the roof area