Aside from facades flat roofs are the most demanding parts of a building. The state-of-the-art solution for roof waterproofing is the polymer membrane technology which had been invented and developed by the chemist Herbert Koch in the early fifties and has conquered the world markets since then. Decades of experience in this field give us the leading edge when it comes to Photovoltaic system installed on flat roofs. We take care for your roof, you enjoy your solar electricity income.


There are 1.5 billion sqm flat roofs in Germany only, especially on commercial and industrial buildings. Under ecological as well as aechitectural aspects such areas are predestined to be used for the electricity production and at the same time CO2 saving by solar power. Each year one could produce 75 terwatt hours equivalent to 33 % of the output of all German nuclear power stations, of which each other one has to be disconnected from the grid within the next 5 years.

• Roof Analysis
• Full Design
• Support during the design phase
• Selection of proven and certified system components
• Competitive installation methods
• Finance and subsidies concepts for the lease of land
• Quality Control and Monitoring
• Insurance packages
• Guarantees

KOCO doesn´t leave anything to chance

• Feed-in-Tariff
• PV Knowledge
• CSR