Green roof system | east-west system

Clamping system single-layer with portrait elevated modules

  • Suitable for a wide range of green roofs
  • Retention effect: Time-delayed water runoff relieves the sewer system
  • Natural cooling of the ambient temperature and the PV system
  • Sustainable production through the use of recycled materials


Your benefits

Efficient use of space thanks to 10° module inclination and portrait mounting

Large substrate plates provide sufficient space for ballasting

Wind tunnel tested aerodynamics

Sufficient distance to the roof surface for plant growth and sliding snow

Brochure: green roof system

Biotope, water storage, air conditioning – the all-in-one package for your roof!


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Module assembly Elevation Roof assembly


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More information about the green roof mounting system

With our green roof mounting system (formerly Divercity) East-West, you make maximum use of the surface area of your flat roof: through different layouts with the same components, not only East-West, but also butterfly and South orientations are possible. The electricity production is thereby distributed more evenly throughout the day. The mounting system with an inclination of up to 10° ) is a very safe and stable system for flat roofs - and is also easy and quick to set up. Thus, the area is efficiently used for portrait and landscape mounting. On the roof, the mounting system offers sufficient space for ballasting due to large-area substrate plates, as well as a sufficient distance to the roof surface for plant growth and slipping snow. The water storage volume of the sheet favours the retention effect.

The PV mounting system allows the roof surface to be optimally utilised through landscape module mounting. A narrow service aisle nevertheless ensures convenient access without having to walk over the modules. The panels are clamped to the provided lateral fastening points and fewer rails are required than with horizontal module layout. The panels, made of recycled plastic, are installed in an overlapping manner. This mounting feature allows for quick and easy installation of the substructure without measuring - guaranteed error-free! The cable duct is already integrated into the support element and does not have to be laid additionally. The very few parts simplify storage and logistics. 

Mounting tutorial

How to easily mount our green roof system.

Frequently asked questions about the green roof system:

1. Applications:

In principle, this is possible. The question is whether this makes sense, because the existing substrate would have to be removed before assembly.

novotegra is not aware of this regulation. Our green roof system has been developed in such a way that sufficient plant growth is possible.

Theoretically, yes. However, there are still open questions regarding soil sealing and price.

As the name suggests, novotegra is designed for green roofs. For gravel roofs, which are very popular in Switzerland, novotegra offers "novotegra for flat roofs I and II" systems, which can be combined with specific gravel rails. For Switzerland, novotegra also offers "novotegra for gravel roofs, formerly known as "Formsol". These systems are similiar in the design and mounting as "novotegra green roof systems".

2. Durability & Guarantee:

Yes. The plastic material of the novotegra plastic components (substrate plates and supports) have been successfly used for decades in this or similar areas (Renusol, Formsol, playgrounds).


No wind speeds as such are determined in the wind tunnel. The wind tunnel is used to determine the so-called cpe-values (aerodynamic coefficients). These factors are included in the ballast calculation together with the dynamic pressure (depending on the wind load zone) and the factor for the terrain category and the safety coefficients. Accordingly, there is no difference to Flat Roof II in the calculation. Depending on the building data and location, the required ballast is calculated. If the ballast is so high that it would exceed the maximum load of the building, the system cannot be built.

Nothing has been noticed so far.

3. Installation:

Due to the thickness of the plastics, the screw would tear off beforehand than overturn (this was practically tested in our laboratory). 

Not for the current rail. In the future use of the C-rails 47 (usually) and 38 (low-load regions), the existing cover caps (plastic and aluminium) and the lid C-rail 1:1 can be used. The conversion to the C-rails is being made. at the end of 2022.

In practice usually about 36 cm. The distance between the bottom edge of the module and the roof is 46.4 cm. Often about 10 cm of substrate is applied, so that after applying the substrate about 36 cm distance remains between the substrate and the lower edge of the module.

Up to 5° roof pitch is possible.

If the client (constructor) allows it, these are buildable as long as no support is affected. The substrate plates can be cut out.

It should be plants with a low growing height.

The application of the fleece and the substrate usually fall into the trade of the roofer who builds the green roof. If necessary, recommendations for nonwovens and substrate manufacturers can be given, but usually these are selected by the roofer.

The modules are clamped on the long side in 1/4 point.

Yes, it is possible and would make sense if the C-38 could be used as a cable duct at the same time. With regard to the assembly, however, the rail would have to be interrupted again and again (module inclination = kink) and bridged here again) - therefore rather great effort and not easy to implement.

It should be 25 mm.

There is currently no cable routing rail.

Depends on whether the substrate has already been included/calculated.

We do not have any test results, but the following can be derived from the experience of FD II: Connection of the module carrier rails with each other. Derivation in a meaningful grid, e.B every 5m to the existing lightning protection system. Module placement by installation of contact plate on the center terminals

1 single module is possible, but then it has to be ballasted relatively high.

Not at the moment.

The modules can also be arranged transversely, but this does not make sense, as the area is not optimally used and fewer modules can be installed. Butterfly installation is possible, but this option is not yet refelcted in Solar Planit.

No, the module supports have fixed heights (high support and low support).

The system handles minor unevenness, the modules are then slightly curved.

Yes, but this is not ideal and also involves significantly more effort than with the recommended ballast with substrate.

4. Further questions:

Completely in Germany made of recycled plastic.

This cannot be answered in general, as many factors play a role such as the age of the roof, the height of the roof,the accessibility to the property...

Probably from the end of March 2022 in the east-west variant. The other two variants (Butterfly and South) are already possible to plan with the components, but will be implemented in Solar Planit at a later date

It is specified in the planning in Solar-Planit .

In can be ordered from the end of March 2022.

Usually approx. 1x per year (pruning back vegetation)

We support you with your project

System planning with Solar-Planit

Planning for different roofs, roof coverings and roof constructions

Initial mounting service

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Seminars & trainings

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