The LIGHTWEIGHT ROOF system can generally be used on flat roofs with fixed waterproofing. Inverted roofs are unsuitable for the lightweight roof.

The lightweight substrate L exceeds the requirements of the FLL Green Roof Guidelines for extensive single-layer substrates.

The LIGHTWEIGHT ROOF system is suitable for 0-5° roofs and is drained via a solid drainage system (FKD).

With URBAN GARDENING, herbs and vegetables can be planted with a basic layer structure of at least 120 mm. We recommend a greater substrate height for berry bushes. This can be up to 400 mm. Drainage is provided by the Drainage and storage board FKD 40, which is suitable for green roofs from 0-5°.

This creates a variety of roof landscapes with terraces or gardens – green oases in the middle of the city that offer relaxation areas, promote biodiversity and are characterized by a particularly high ecological value, for a plus in quality of life in a green environment!

Here you will find further matching system accessories:

• Fall protection and Railings
• Fall protection Optisafe SkyGard 
• Gravel retainers

Urban Gardening concepts for rooftop gardens improve climate and quality of life

The GARDEN ROOF is just one of numerous system solutions in our portfolio. Urban Gardening is a special form of green roofs. In this system, the roof garden or green roof is cultivated as a kitchen garden with useful plants such as vegetables and herbs. This creates holistic organic habitats that improve the quality of air and life in our cities.

The ECONOMY ROOF system has proven itself in practice for decades. Drainage takes place via a drainage board (FKD), which is also well-suited to non-pitched roofs. The ECONOMY ROOF is particularly resistant and can be used on most standard roofs.

Like all Optigrün system structures, the ECONOMY ROOF also meets the requirements of the FLL Green Roof Guidelines.

Ecological compensation areas

The NATURE ROOF is a varied and visually appealing green roof solution. With a basic system structure of at least 100 mm and partial elevations of up to 250 mm, the NATURE ROOF system offers a greater variety in the choice of plants and can even be designed as a biodiversity area. The green roof is drained via the solid drainage system (FKD), which is suitable for roofs from 0-5°.

The NATURE ROOF is an intervention-reducing measure within the meaning of the intervention compensation regulation and contributes significantly to a reduction in charges in municipalities with split wastewater charges. The NATURE ROOF meets the requirements of the FLL Green Roof Guidelines.

The special feature of the LANDSCAPE ROOF is the use of an additional mineral layer (sub-substrate). From an installation depth of 350 mm, organic components should only be used in small quantities in order to avoid undesirable anaerobic decomposition processes.

The RETENTION ROOF MEANDER FKM 30 is an economical and efficient system for delaying runoff. The inexpensive and flat system structure is particularly interesting for large industrial roofs, for example, where it is often necessary to comply with certain discharge restrictions. The sedum vegetation we recommend is robust and requires little maintenance. This also contributes to the cost-effectiveness of this green roof system.

The RETENTION ROOF MEANDER FKM 30 is an impact mitigation measure within the framework of the impact compensation regulation. It meets the requirements of the FLL Green Roof Guidelines.

The Meander FKM 60 element thus ensures permanent water storage while at the same time delaying runoff and thus reducing the peak runoff coefficient. Permanent water storage and delayed water runoff in combination with biodiversity and evaporation make the Meander FKM 60 efficient a very high-performance product.

The permanent water storage of over 17 l/m² enables significantly more lush vegetation on the green roof. This contributes to an increase in biodiversity and an increase in evaporation capacity. This promotes cooling of the surrounding area, which in turn has a positive impact on the urban climate.

The RETENTION ROOF MEANDER FKM 60 is a mitigation measure within the framework of the impact compensation regulation and meets the requirements of the FLL Green Roof Guidelines.

And this is exactly what is meant by the sponge city concept. Here, green roofs and rainwater management work together effectively and sustainably. They are an important instrument on the way to the sponge city of the future. In short: they are indispensable in the fight against the consequences of climate change.

The RETENTION ROOF FLOW CONTROL is particularly recommended for extensive green roofs with special structural requirements. The water retention box (WRB) is used as a retention and drainage element. The WRB element can be used flexibly. Depending on requirements, it can be used as a permanent water reservoir and/or as a temporary retention area to delay runoff.

The RETENTION ROOF FLOW CONTROL for extensive and simply intensive green roofs is economical and sustainable. It ensures efficient rainwater retention and delays runoff. The WRB 80F has an integrated permanent water storage tank of 6 l/m², which is independent of the throttle. The WRB 80F can be stacked inside each other and is therefore particularly easy to transport.
The RETENTION ROOF FLOW CONTROL is a mitigation measure within the framework of the impact compensation regulation and meets the requirements of the FLL Green Roof Guidelines.

How can the principle of the sponge city be implemented in practice? This is where our RETENTION ROOF FLOW CONTROL INTENSIVE is recommended. It is suitable for intensive green roofs where there are special structural requirements with regard to flooding volume and runoff retardation.

The water retention box (WRB) is used as a water storage and drainage element. Depending on the requirements, the WRB element can be used as a permanent water reservoir and/or as a temporary retention area to delay runoff.

The water retention box for intensive green roofs is a particularly efficient system with a very high storage capacity. The WRB 85 elements are highly pressure-resistant and are connected to each other in such a way that a flat, closed surface is created. This enables the construction of intensively used roof areas with sections that can be walked and driven on.

The RETENTION ROOF FLOW CONTROL INTENSIVE is an intervention mitigation measure within the framework of the intervention compensation regulation and fulfills the requirements of the FLL Green Roof Guidelines.

For roof pitches up to a maximum of 15°, single-layer extensive greening without surface shear protection is possible on the SSV 800 structural and storage fleece. With flow lengths of more than 6 m and with smooth synthetic waterproofing, there is a risk that the green roof structure may slip, for example during heavy rainfall events, on roof pitches of 10° or more. In order to prevent this, however, constructive measures should be taken to prevent shearing.

The anti-slip system P is suitable for pitched and gabled roofs up to a roof pitch of approx. 30°. The advantages of the system lie in its quick installation, easy cutting to size and low price. Solid and inexpensive pitched roof greening up to 30° can be realized. For roof pitches from approx. 25°, the use of the vegetation mat fixing strip is required to secure the vegetation mats in the area against slipping.

The anti-slip system N consists of a highly tear-resistant and rot-proof mesh. It is used to absorb tensile forces from the shear ties. The special shear sills with integrated fastening hooks are hooked into the net laid over the ridge or fixed with fastening systems. The advantage of the system lies in its ease of installation and its particular flexibility. The spacing of the sleepers can be flexibly adapted to the roof pitch. Due to the high degree of standardization, many forms of green roofs can be implemented on pitched roofs at low cost.

The anti-slip system T is suitable for green roofs on all monopitch and pitched roofs up to a roof pitch of approx. 45° – as for our green roof system pitched roof 15-45°. It is very robust and can be easily walked on during installation. This makes it easier to install on steep surfaces with a roof pitch of over 40°.

Made from recycled plastic

The anti-slip system T is made of rot-resistant recycled plastic. The simple plug-in system consists of shear beams (3,250 mm long) and shear sleepers (107 mm long) with a height of 80 mm. The sleepers are inserted into each other at the required sleeper spacing depending on the roof pitch and construction height. Excess water is stored and drained away underneath the system using the Structured Storage Fleece SSV 800.

The advantage of the PITCHED ROOF 15-45° S is that it can be used to extensively and simply intensively green pitched roof surfaces with complicated roof shapes and high shear loads. This shear protection system requires detailed planning and calculation in advance by Optigrün application technology.

The anti-slip system S consists of rot-resistant recycled plastic (sleepers) in combination with strong stainless steel cables as a shear load absorbing component, which are attached to permanently installed holding points at the high point of the roof surface. These fixing points must be individually adapted to the structure.

Car-accessible traffic roofs can be used on uninsulated roofs as well as on warm and inverted roofs.

This variant of roof greening benefits the principle of the sponge city. The aim behind this is to ensure a better urban and microclimate. This is achieved by retaining rainwater and keeping it where it falls. The green roofs also delay evaporation. The sponge city thus absorbs water and releases it again with a delay. This improves the urban climate. Our green roof traffic roof retention also contributes to this. System structure public roof – retention Note: Click on the marked points to get more information!

The module rows can be installed in a south or east-west orientation. The modules can be mounted both vertically (portrait) and horizontally (landscape).

The SOLAR GREEN ROOF with the proven technology of the ECONOMY ROOF:

A sophisticated and highly functional system structure for extensive green roofs – supplemented by solar mounting.

The drainage and water storage element FKD 25 provides generous water storage and reliably drains excess water. Combined with the filter fleece FIL 150, optimum water distribution is guaranteed, ensuring that the vegetation under the PV module rows is also well supplied with water.

The module rows can be installed in a south or east-west orientation. The modules can be mounted both vertically (portrait) and horizontally (landscape).

The RETENTION ROOF FLOW CONTROL is an economical and efficient product for retaining rainwater and delaying runoff. In combination with the solar elevation, multifunctional roof use is possible.

The use of the proven water retention box WRB 80F helps to maintain the natural water balance by increasing evaporation and minimizing surface runoff.