Frame made of timber 45mm, PIR panels 30mm, mineral wool 20mm. As well as the thickness of the body of plywood 20mm. In general, when I made ventilation, I looked at it all .. 10 cm wall thickness! It should be warm in the winter and cool from the air conditioner in the summer. (I hope it will be) Today I almost finished the technical section. The walls are ready. Paul too. Installed ventilation tubes. Painted 2 times. Tomorrow I'll probably go through the paint again. Haven't decided what to lay on the floor yet. The ceiling is made of a sandwich panel, so I don’t know yet whether I will close it with something. Perhaps the height is still useful for installing all the electrics.