Roof penetration-free cross-rail system – @Xpert
Pitched gable and shed roofs with bitumen or membrane coverings were previously difficult or very complex to install without roof penetrations. With the new METIS mounting system from T.Werk, PV projects can now be easily implemented on these roofs. The modules are installed parallel to the roof in a cross-rail configuration with ballast. Roof penetrations are not required. The modules only need to be additionally secured against slippage (downslope) at the ridge or eaves.
- A wind assessment conducted by the IFI Institute in Aachen enabled the necessary ballasting to be reduced to a minimum.
Roof penetration-free cross-rail system – @T.Werk
The required safeguards against slippage are project-specific and cannot be answered in general terms.
The following options are available:
- With an east/west orientation of the roof surfaces, the module arrays on each side of the roof lift each other. Action equals reaction. The downward forces then balance each other. Construction using flat aluminum stock or perforated aluminum strips.
- Mounting to an attic. For example, by using an aluminum rail with screw anchors, threaded rods, or dowels. The module array is then secured to this rail with flat aluminum stock or perforated aluminum strips.
- Attachment to the ridge or ridge beam. Similar to the attachment for the parapet, except here we need threaded rods or solar panel fasteners and must then seal them accordingly. This requires roof penetrations at a few points.
- Specific special solutions that can only be identified after reviewing the project.
As a partner of T.Werk, we are happy to support you in the planning and design of the system.
Keep in touch
