Landscaped Roofing Systems

ONDUGREEN, beyond being a landscaped roofing system, provides aesthetical, natural and reliable, out of range  green space on your roof.

Product benefits

  • Environment friendly
  • Thermal protection
  • Ecological

General Characteristics

Fast urbanization in the cities all over the world has resulted in the loss of green lands. Natural surroundings that should normally exist have been replaced by concrete buildings. Air pollution has become a major worldwide problem.



The Green Roof system helps twice to protect the environment: by using recycled products on the one hand relieving disposal sites and on the other hand giving nature the chance to reconquer space in the crowded cities. Apart from the attractive appareance of a Green Roof there are also a lot of solid economical and ecological benefits, provided that there is a technically perfected Green Roof build-up which guarantees a durable success. Green Roofs are worth being installed- from small surfaces on garages or car ports up to large industrial surfaces.



Every year, natural surroundings are sacrified in favour of urban developments whereas Green Roofs constitute the ideal solution for offsitting the loss of nature. That is why we have found in technically innovative and practicable solutions for integral use of the roof- from the so called extensive landscaped roof as an ecological protection layer up to beautiful “Roof Garden” which can be combined with footpaths and road surfaces. To compensate the functions of the missing ground is the main requirement in view of establishing a durable vegetation on roof surfaces. Technically perfected Green Roof Systems from ZinCo Ingenieurwerkstatt + Gruendachsysteme combined with the experience of Onduline Avrasya in the roofing systems guarantee a durable success of landscaped roofs.



A- Reduced Sewer Cost

A Green Roof build-up reduces the water run-off to 50-100 %. The remaining water flows off with a time difference. So, with Green Roofs, it is ensured that the rainwater remains in the natural water cycle thereby reducing sewer cost.




B- Reduction of Dust

A Green Roof helps to filter the dust particules in the athmosphere. The nitrates and other environmentally harmful substances on the air or the rainwaters are absorbed.




C- Reduced Noise Level

Due to the soft plant level of Green Roofs there is sound absorbtion instead of sound reflexion. Moreover, the sound insulation of a building can be reduced up to 8dB.




D- Use of Space

Roof Gardens offer additional space for leisure activities- without spending money on new and expensive building grounds.



E- Reduction of Urban Heat Island Effect

The surfaces of Green Roofs improve the microclimate by cooling and humidifying the surrounding air. In addition the plants capture solar energy, extract carbon dioxide from the air, and combine it with water to produce organic substances. Through this process, plants release oxygen which guarantees more purified air.



F- Reduced Renovation Cost

The waterproofing’s life expectancy is increased, because it is better protected from UV-rays, hail and extreme temperature differences. It can be presumed, that the life expectancy of waterproofings is increased to more than 40 years if a Green Roof is installed.



G- Reduced Energy Cost

Thermal insulating Green Roof build-up with official property values are allowed to be added to the conventional thermal insulation. Due to this special build-up, the building owner saves up to 50 % of the energy cost.




H- Natural Habitat for Animals and Plants

At least a part of green surfaces which were sacrified to building developments can be compensated by landscaped roofs, thereby reducing the quantity of sealed surfaces and encourage limited wildlife development.






ONDUGREEN, is a perfect solution breathing life back into the cities otherwise left to concrete and nothing else.





ONDUGREEN, creates extra living functional areas in full nature.





ONDUGREEN, is a landscaped roofing system designed to convert common areas into more functional ones.




Roof Types

Roof Types


In most of the cases the Green Roof is build-up on a minimum 2% pitched and well waterproofed flat roofs. However the Green Roof can be build up in all type of roofs from gable to hip, gambrel or shed up to 51° (123%). For higher pitched roofs particular preventions are suitable. There is also particular methods for flat roofs without drainage.

The are not only different types of roofs, they show also differencies of building systems and used materials. In principle there is always a method for building a green roof on any type of roof. For application of a green roof system on multistorey car parkings, warehouses and storage buildings, shadings, etc. the only limitation is the weight carriage capacity of the structure. For heat insulated roofs there are several types of methods of green roof system.



Single Shell Roofs Without Ventilation

This type of traditional “warm roof” is very commonly used. In order to apply green roof system in a single shell non insulated roofs a vapor barrier membrane of resistance of at least sd=100 m should be applied under the heat insulation layer. All types of green roof system could be applied on traditional warm roofs.





Single Shell in Inverted Roofs

This type of roof has the heat insulation on top of the water insulation and are used more often. The materials used for the green roof system have to be chosen carefully in order to let the heat insulation material dry easily which is getting always wet. For this reason  the anti-root layer should never be installed over the heat insulation layer.





Double Shell Roofs With Ventilation

This type of roof commonly named “cold roofs” there is an empty space over the heat insulation for ventilation purposes. The water insulation is applied over the second roof structure. This system causes no any particular problem for green roof application. The only particular point to respect is that the material used for the second roof shell structure as OSB, plywood, etc should have the carriage capacity of the additional weight caused by the green roof system.




Green Roof Systems



There are two methods of Green Roofs Systems;


Intensive landscaping or Extensive landscaping. In Intensive landscaping if there is enough load bearing capacity it is possible to realize roof gardens (with higher maintenance): From lawn and demanding shrubs to bushes and even trees and ponds in combination with driveways and terrace surfaces. Provided that the right technology is used! Because the load bearing capacity of the roof has to be approx. 300 kg/sqm.


Extensive landscaped roofs are an ecological alternative for conventional surface protections such as gravel. And the load that has to be supported by the roof is less then 100 kg/sqm. Regarding installation and maintenance they cause only small additional costs. Suitable plants are mosses, sedum-species, herbs and some grasses. After installation the maintenance is limited to 1 or 2 inspection checks a year.



Fundamental Build up Levels


1- Plant Material

Suitable plants to the climate of the area when installed in proper system will last for years.


2- Growing Medium (vegetation level)

A roof planting soil which is adapted to the plant level. The base of each roof planting soil is “Zincolit” which is completely mineral material on the basis of crushed clay bricks, enriched with the organic material “Zincohum”.


3- Filter and Drainage Levels

Prevents fine particles from being washed out of the substrate soil, thereby ensuring efficiency of the drainage layer. Profiled drainage elements retain rainwater for dry periods in troughs on the upperside. The surpluswater is drained off through the channel system on the underside. Special holes ensure evaporation and the necessary ventilation. The extra large water retaining troughs on the upperside supply the plants in dry periods.


4- Moisture Retention and Protection Mat

Provides mechanical protection and retains moisture and nutrients.


5- Root - Resistant Level

Prevents roots from affecting the efficiency of the waterproofing in case there is not a root-resistant one.


6- Roof Construction and Waterproofing

The Green Roof can be build-up on a strong and well waterproofed roof structure. The use of BITULINE waterproofing membranes gives a perfect waterproofing to the roofs.


Ondugreen Layers



Growing Mediums: Ecological Solutions With Local Materials



For the growing mediums of the system ONDUGREEN we use recycled natural clay tile chippings instead of synthetically obtained substrate such as lava, pumice, etc. because the organic content decomposes and prevent the drainage resulting in plant failure.

The choice of the materials is also essential for the ecological point of view which is behind the green roof idea; therefore the waste material of the clay tile production is utilized in an effective way for the environment. The “Zincolit”, a recycled mineral bulk material on the basis of clay tile chippings and the plant soil enriched with the organic material "Zincohum" have been choosen as the most suitable growing medium for green roofs specially for sedum species for which they provide stable long term nutritient supply and resistant to frost and wind erosion. The duo Zincolit+Zincohum are the unchangeable contents of the green roofs.


Best Suitable System Susbstrate for Green Roofs.


1- Crushed brick
2- Plants
3- Harrow and sifter
4- Compost facility
5- Mineral content
6- Organic content


Technichal details


Ideal Plants For Roof Gardens

In extensive green roofs plant material should be chosen from maintenance free species. Sedum Carpet" is a low, ground-covering extensive green roof vegetation on a substrate layer of approx. 60 mm which is mainly applied where - apart from low weight - also low maintenance costs are demanded. There are a wide variety of sedums, herbs and grasses that meet these requirements. They come in a wide range of leaf and flower colours and they root quickly. In general planting should be done between spring and early fall but the fastest growing result can be obtained by planting in March-April. The main flowering season of the "Sedum Carpet" is in early summer. The dominating colours are yellow and red/white.




The 6 or 7 different low-growing Sedum species which belong to the plant community "Sedum Carpet" are spread as shoots or applied as plants with small root balls over the Zincolit substrate layer and covered with 10-15 l/sqm Zincohum plant soil and irrigated. With this method by using 50 g/sqm of sedum carpet we may obtain a perfect roof garden within 2-3 years. For bigger roof surfaces it is possible to spread the shoots of sedums, seeds of mosses, herbs and grasses with pressurized water pump.



Anti-Root Waterproofing


In extensive or intensive green roof applications the waterproofing of the roof has to be protected against root damages. The use of protective concrete layer applied on familar waterproofing membranes is not the effective solution for preventing most of the plant roots to damage the waterproofing. Therefore the use of a special root barrier on top of the existant waterproofing or an anti-root waterproofing membrane is necessary.

The BITULINE EP400 Anti-racine membranes are used for intensive or extensive roof planting of gardens and are resistant to root perforation or penetration damages. The BITULINE Anti-racine membranes have been tested during two years by Forschungsgesellschaft für Landschaftsentwicklung und Landschaftsbau (University of Applied Sciences Research Institute of Horticulture) in Germany by FLL method and granted FLL root resistance Certificate. (x)

With the use of BITULINE EP400 anti-racine in the

waterproofing of the green roof application another root barrier is not necessary. And the result is more safe and economic.



Onduline CEOnduline FLL Report






(x) Except bambou species. There is no any antiroot product for these species. Therefore it is better do not use these species in the green roof systems or the use of stainless steel tanks is recommended.



Ondugreen Extensive System


1- Extensive System Application on Flat Roofs With Minimum of 2% of Pitch Floradrain drainage sheet should be used for green roof application on classical flat roofs with minimum of 2 % of pitch and sloped roofs with maximum of 10 % of pitch.





Total system thickness: ~ 11-13 cm


Water storage capacity: ~ 40-50 l/sqm


Total system weight including the

plant material: ~ 80-100 kg/sqm



2- Extensive System Application on Flat Roofs Where Deeper Puddles Remain

The puddles could damage the plant material. To prevent this the distance between the water level and the growing medium has to be ensured by installing deeper Floraset EPS drainage elements.




Total system thickness: ~ 14 cm


Water storage capacity: ~ 10-20 l/sqm


Total system weight including the

plant material: ~ 65-90 kg/sqm



3- Extensive System Application on Sloped Roofs 20 % - 40 % of Pitch

In the sloped roofs the system has to be ensured against slippage. For this purpose Floraset polystyrene drainage and anti-slippage element should be used. In addition an anti-erosion mesh made of jute will prevent erosion.



Total system thickness: ~ 13-15 cm


Water storage capacity: ~ 30-40 l/sqm


Total system weight including the

plant material: ~ 80-100 kg/sqm



4- Extensive System Application on Steep Sloped Roofs of 40 %- 100 % of Pitch

In the steep sloped roofs the system has to be ensured against high slippage risk. For this purpose Zinco Georaster element for steep sloped roofs has to be used. This element provide a secure hold for the growing medium against water and wind erosion even in pitches of 100 % (45°). With the use of Georaster there is no need to use a root barrier, an anti-root waterproofing fixed mechanically and WSM 150 moisture protection mat for water and nutritient retention complete the system.



Total system thickness: ~ 12 cm


Water storage capacity: ~ 68 l/sqm


Total system weight including the

plant material: ~ 155 kg/sqm



5- Extensive System Application on Inverted Roof

In the inverted roof systems commonly used for the heat insulated flat roofs, the XPS thermal insulation is placed over the waterproofing membrane and is exposed to the rain water. The layers of the system which prevent damp air from vapourizing shouldn’t be installed on top of the thermal insulation boards; the insulation will stay wet. Therefore thicker water retention and protection mats must be replaced by a diffusion permitting separation and slip sheet TGV 21. If root barriers are necessary they have to be placed underneath the insulation boards directly onto the waterproofing.




Total system thickness: ~ XPS + 11-13 cm


Water storage capacity: ~ 35-40 l/sqm


Total system weight including the

plant material: ~ 80-100 kg/sqm



6- Application on Driveways and Walkways

The drainage layer used under the driveways and the walkways should have highest mechanical resistance. Waterproofing with anti-root membrane is inevitable in areas without plant material. The drainage under the walkways or driveways is used for draining the water retained by the concrete elements and prevents from freezing.




Total system weight including the
plant material: ~ 550 kg/sqm






7- Intensive System Application on Flat Roofs With Minimum of 2 % of Pitch

Floradrain FD 40 drainage sheet should be used for Intensive green roof application with its good water retaining and drainage capacity and high mechanical resistance. The type of planting and its ultimate size will determine the moisture protection mat and root barrier types.



Total system thickness: ~ 20-25 cm


Water storage capacity: ~ 68 l/sqm


Total system weight including the

plant material: ~ 150-250 kg/sqm




8- Intensive System Application on Flat Roofs With Automatic Irrigation

Floradrain FD 60 drainage sheet allows the automatic irrigation of lawns, hedges, large shrubs, large bushes and trees for the Intensive green roof application. The level of the water retained on the substrate will be maintained by use of Zinco irrigation unit BS 32




Total system thickness: ~ 27 cm

Water storage capacity: ~ 113 l/sqm

Total system weight including the

plant material: ~ 360 kg/sqm



System Components


Floradrain FD 25
Drainage and Water -  Retaining Element
Width: 1,00 m
Length: 2,00 m
Weight: ~1.7 kg/sqm
no overlapping is necessary.
Article nr: 04160003025

Floradrain FD 40
Drainage and Water -  Retaining Element
Width: 1,00 m
Length: 2,00 m
Weight: ~2.2 kg/sqm
no overlapping is necessary.
Article nr: 04160003040
Stabilodrain SD 30
High Pressure Resistant Drainage and
Water -  Retaining Element
Width: 0,94 m
Length: 2.00 m
Weight: ~3 kg/sqm
no overlapping is necessary.
Article nr: 04160003330
Floradrain FD 60
Drainage and Water -  Retaining Element
Width: 1,00 m
Length: 2,00 m
Weight: ~2,3 kg/sqm
no overlapping is necessary.
Article nr: 04160003060
Floraset FS 75
Drainage and Anti - Slippage Element for %0 Roof and Sloped Roofs of %20 - %40 of Pitch.
Width: 1,00 m    Length: 1,00 m
Weight: ~1,5 kg/sqm
no overlapping is necessary.
Article nr: 04160003076
Antierosion Element for Steep Sloped Roofs of %40 - %100 of Pitch
Dimensions of module: 54 cm x 54 cm
Grid dimension: 62,5 cm
Weight: ~1,8 kg/pcs
1m² = 2,56 Pcs.
Article nr: 04160003400
Separation and Slip Sheet
TGV 21
Width: 1,60 m
Length: 250,00 m
Weight: ~80 g/sqm
10 cm of overlapping is necessary.
Article nr: 04160002180
SSM 45
Moisture Protection Mat for Flat Roofs
Width: 2,00 m
Length: 50,00 m
Weight: ~470 g/sqm
10 cm of overlapping is necessary.
Article nr: 04160002045
BSM 64
Moisture Retention and Protection Mat
Width: 2,00 m
Length: 25,00 m
Weight: ~650 g/sqm
10 cm of overlapping is necessary.
Article nr: 04160002064
ISM 50
Moisture Retention and Protection Mat
Width: 2,00 m
Length: 25,00 m
Weight: ~850 g/sqm
10 cm of overlapping is necessary.
Article nr: 04160002050
WSM 150
Moisture Retention and Protection Mat for Steep Sloped Roofs
Width: 1,00 m
Length: 15,00 m
Weight: ~1500 g/sqm
10 cm of overlapping is necessary.
Article nr: 04160002015
System Filter High Pressure Resistance
Width: 2,25 m
Length: 50,00 m
Weight: ~330 g/sqm
10 cm of overlapping is necessary.
Article nr: 04160002130
WSF 40 Root Barrier (optional item if non root - resistant waterproofing used)
Width: 8,00 m
Length: 25,00 m
Weight: ~380 g/sqm
1,5 m of overlapping is necessary.
Article nr: 04160001040
WSB 100-PO Root Barrier (optional item if non root - resistant waterproofing used)
Width: 2,44 m
Length: 30,5 m
Weight: ~1,13 kg/sqm
10 cm of overlapping is necessary.
Article nr: 04160001084
Anti Erosion Mesh
Width: 1,22 m
Length: 70,00 m
Weight: ~500 g/sqm
10 cm of overlapping is necessary.
Article nr: 04160002856
KS8 - KS12
Inspection Chamber
Chamber Size: 25 cm x 25 cm
Flange Size: 50 cm x 50 cm
Weight: ~3 kg/pcs - 3,2 kg/pcs
Height: 8 cm - 12 cm
Article nr:
KS8: 04160004286
KS12: 04160004296
KS 30 PE
Inspection Chamber
Width: 30 cm
Length: 30 cm
Weight: ~6 kg/adet
Height: 30 cm
Article nr: 04160004033
Automatic Irrigation Unit
Width: 30 cm
Length: 30 cm
Weight: ~7 kg/pcs
Height: 30 cm
Article nr: 04160004031
RKS 75 Parapet Inspection Chamber
Width: 25 cm
Length: 25 cm
Height: 7,5 cm
Weight: ~1,9 kg/pcs
Article nr: 04160004138
KS A 10
Width: 25 cm
Length: 25 cm
Weight: ~1,9 kg/pcs
Article nr: 04160004249
Substrate for Growing Medium Bulk or big bags.
Article nr: 04160005000
SF Sistem Filtresi
Width: 2,00 m
Length: 100,00 m
Weigth: ~100 g/sqm
Article nr: 04160002100



ONDUGREEN, the landscaped roofing system, creates aesthetical, natural, reliable and out of range green spaces on the prestigious projects and individual roofs since 2003.
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