Substrates
Our substrates for green roofs are optimally matched to our system structures and thus guarantee the long-term functionality of the green roof system. All substrates comply with the FLL green roof guidelines, ÖNORM L 1131 in Austria and the Fertilizer Ordinance. Questions about substrates can be answered by our colleagues in the application technology department. We have compiled specialist information on the subject of substrates for you here.
Delivery forms for substrates
- Loose fill
- Big bag (1,0 - 2,0 m³)
- Blown in silo truck
- Bagged goods in 25 and 40 liter bags
Base substrates
Basic substrates are used for classic extensive and intensive greening and are available as light and heavy substrates. Light and heavy substrates differ in their appearance, the various additives and their weight. The light substrates contain light aggregates such as expanded shale and expanded clay, while heavy substrates contain heavy components such as lava or brick chippings.
Extensive Single Layer Substrate M-light
Optigrün Extensive Single Layer Substrate M-light is used as drainable vegetation substrate for extensive single-layered green roofs; for roofs with low load reserves.
Extensive Single Layer Substrate M-heavy
Optigrün Extensive Single Layer Substrate M-heavy is used as drainable vegetation substrate for extensive single-layered green roofs; for roofs with high load reserves.
Extensive Multi Layer Substrate E-light
Optigrün Extensive Multi Layer Substrate E-light is used as a vegetation substrate for extensive multi-layered green roofs, on roofs with low load capacity; suitable for a broad plant species diversity.
Extensive Multi Layer Substrate E-heavy
Optigrün Extensive Multi Layer Substrate E-heavy is used as a vegetation substrate for extensive green roofs with a multi-layered build-up, for pitched roofs with roof pitch > 5° and for roofs with high load capacity/reserve; suitable for a broad plant species diversity.
Lawn Substrate R
Optigrün Lawn Substrate R is used preferably for lawn areas and intensive multi-layered green roofs with a roof pitch of 0 - 20°.
Intensive Substrate I-light
Optigrün Intensive Substrate I-light is used as a vegetation substrate for multi-layered intensive green roofs, on roofs with low load capacity; suitable for a broad plant species diversity.
Intensive Substrate I-heavy
Optigrün Intensive Substrate I-heavy is used as a vegetation substrate for multi-layered intensive green roofs, on roofs with high load capacity; suitable for a broad plant species diversity.
Aeration Substrate U-light
Optigrün Aeration Substrate U-light is used as a drainable filler substrate beneath Optigrün Intensive Substrate Type I on intensive green roofs with low load capacity; higher build-up.
Aeration Substrate U-heavy
Optigrün Aeration Substrate U-heavy is used as a drainable filler substrate beneath Optigrün Intensive Substrate Type I on intensive green roofs with high load capacity; higher build-up.
Supplementary substrates
Supplementary substrates are used for green roofs with special requirements. These substrates supplement the basic substrates with regard to special requirements, such as lawns with and without trafficability and light extensive construction. The respective suitability should be agreed with our application technology department.
Low Density Substrate L
Optigrün Low Density Substrate L is used as a drainable and particularly lightweight vegetation substrate for extensive green roofs that have low load reserves.
Special substrates
Special substrates are used for green roofs with special requirements. Their product properties make these substrates absolute specialists that are only used in special installation situations and thus complete our substrate range.
Intensive/Extensive Single Layer Substrate Optilith
Optigrün Intensive/Extensive Single Layer Substrate Optilith is used as a drainage and vegetation substrate on intensive and extensive single-layered green roofs; used for accumulation of excess water in a cistern with enhanced water purity requirements.
Intensive Substrate Urban Soil
Optigrün Intensive Substrate Urban Soil is used as a vegetation substrate for intensive multi-layered green roofs. Specifically designed for growing vegetables and berry bushes on garden roofs with 0 - 5° roof pitch.
Green roof substrates from Optigrün: your advantages at a glance
- Reliable drainage and high stability of the plants thanks to a high proportion of interlocking mineral stabilizers
- Permanent air void volume for optimum root penetration and species-appropriate growth opportunities thanks to good grain grading
- High nutrient and water storage capacity with good water permeability
- Footfall stability
- Use of pollutant-free, natural aggregates of mineral and organic origin
- Tested recycled materials from selected suppliers
- Material logistics tailored to the construction site