![Image](https://i.ibb.co/gzd5ZSM/greenhouse-project.png)
This is what I planned. It is 25 cm below ground as that is the frost line (frost depth) in my hometown. Above the concrete foundation is the autoclaved aerated concrete (AAC) as I won't be keeeping plants below. Bottom shelves are for storig gardening equipments. And the next is where I kindly ask for assistance what will capture heat the best.
For side panels I was thinking of thermal insulating glass (thickness 4+16 argon+4), but I am unsure.
For roofing I was thinking of 16mm polycarbonate sheets. I can find a single grower that used acrylic sheets.
Any comments and ideas are more than welcome!