The "Just Roof" system
A proven reliability on 4000 homes since 1994.
Just Roof is a building integrated PV system designed to form the complete roof, replacing tiles or other roof coverings. The Just Roof BIPV system has been installed on more than 4000 homes since its introduction in 1994 without any single instance of water leakage. This wealth of experience in the field combined with 14 years of continuous improvement makes the Just Roof the most reliable and easy-to- install integrated system.
Why the Just roof system rather than another?
- An aesthetic finish: black color frame
- a proven reliability : strong weatherproof building skin without any problem since fourteen years.
- RAn high efficiency: high-efficiency monocrystalline silicon solar cells generating a production of 132 Watt peak (Wp) per sqm.
- An easy and quick installation: the Roof system can be easily installed within one working day
Three-phase inverters
For photovoltaic grid-connected system installations
Individual Sizing
The Siemens inverters operating in master-slave mode enable the installations to achieve a power production of several megawatts. Their balance of system improves the devices expected lifetime and therefore their depreciation.
Global certification
As standard products, the Siemens devices meet international standards (DIN VDE, EN, IEC).
Easy integration
The continous and three-phase integrated distribution avoids additional control cabinets and allows a simple and cost-effective grid-connection with a safe-to-touch system.
Highly flexible system management (SIMATIC) and dynamic phase correction for the generation of gridcompatible alternating current are also included.
Operator control
The operating mode and the diagnostic of the Siemens solar inverter is easy to choose.
The operator can use the control panel or the locally connected PC or remote access via various channels of communication.
Detailed visualization
The standard software PowerProtectsolar, for remote monitoring on a PC, contains a large number of monitoring and diagnostic functions. It is supplied on CD-ROM.





