| Water film lets slide the snow |  |   | 
|  | 80 minutes after I was car driving, all the snow from the front of the roof had slid to the windshield. The warmth from the interior room has melted a thin layer of snow.. | 
| Planning an one family house |  |   | 
|  | I started 2004 with the requirements specifications for the planned construction. One year later how the requirements specifications develops to plans. | 
| Requirements specifications for one family house | 
|  | 13 years after the planning of the first plus energy house GEMINI is a new one family house planned. The feasibility is proven, the new challenge is a realization as cheap as possible. | 
| Requirements specifications for one family house |  |   | 
|  | 13 years after the planning of the first plus energy house GEMINI is a new one family house planned. The feasibility is proven, the new challenge is a realization as cheap as possible. | 
| Ground plan for an one family house | 
|  | Thoughts about the ground plan during the planning of our plus energy house. Size of the house, division and size of the rooms. | 
| Roof for a one family house | 
|  | Planning for the roof, the deciding component, which makes a house an energy waster or energy producer. Electric power and warmth from the roof is a must. | 
| Cellar at house building | 
|  | To much ground surface of the cellar for a usefull usage. New ideas to use the place below the house better. New demands which will be actual in the next decades. | 
| Wall construction | 
|  | From the simple mobile home wall construction up to a modern passive house. Overview over all wall constructions, we wrote in our technical magazine. |