Flat Roof Installation
The flat roof installation describes the installation of photovoltaic systems on flat or slightly sloped roofs. Unlike pitched roofs, where solar modules can often be directly screwed onto the roof surface, flat roof installations require special substructures to align the modules at an optimal angle to the sun.
Advantages of Flat Roof Installation
- Flexibility: Flat roofs can accommodate larger installation areas, as the orientation of the modules is almost arbitrary.
- Aesthetics: By using elevated structures, the modules can be mounted at a certain height above the roof, allowing for visually appealing integration into the building's architecture.
- Accessibility: The modules are generally easily accessible on flat roofs, which facilitates maintenance work.
Challenges of Flat Roof Installation
- Sealing: Careful sealing of the penetrations through the elevated structures is essential to avoid water damage to the roof.
- Static: The additional load from the photovoltaic system must be supported by the roof structure. Therefore, a static calculation is mandatory.
- Wind Load: Especially in exposed locations, the modules and the elevated structures must be secured against strong wind loads.
Components of Flat Roof Installation
- Elevation Structures: The elevation structures are used to align the modules at an optimal angle to the sun. They are typically made of aluminum profiles and fastening elements.
- Module Supports: Module supports connect the modules with the elevation structures and ensure a secure attachment.
- Sealing Membranes: Sealing membranes are used to seal the penetrations through the elevation structures.
- Fastening Elements: Fastening elements are used to connect the individual components of the elevation structures and to secure the modules to the supports.
Planning and Implementation
The planning of a flat roof installation requires careful consideration of the following factors:
- Roof Structure: The static load-bearing capacity of the roof must be checked.
- Orientation and Incline: The optimal orientation and incline of the modules depend on the geographical location.
- Shading: Shading from buildings or trees must be considered to avoid impairing energy yield.
- Wind Load: The wind load must be calculated to ensure secure attachment of the modules.
The installation should be carried out by experienced professionals to ensure a proper and safe installation.
Relevant Keywords: solar system, elevation, wind load, orientation, incline, shading
