Product Detail

HDB Car Park Holland Drive Singapore.jpg

Overview

 

Intensive and extensive green roof system and vertical green wall system.

PRODUCT SPECIFICATIONS

 

 

Options

Intensive or Extensive Green Roof System, Green Wall System

Colours

Waterproofing Membrane - Grey or White

VersiCell, VersiDrain25P, VersiWeb - Black

Geotextile Filter Fabric - Grey

Lightweight Growing Media - Brown

Vertical Green Modules - Black

Green Wall Metal Frame - Black

Warranty

Green Roof Systems - Evalon Waterproofing Membrane 20 years

VersiCell, VersiDrain, VersiWeb, Geotextile Fabric, Lightweight Growing Media - Up to10 years

Green Wall - Up to 10 years excluding plants

Elmich offers up to a 2-year warranty on plants, available with a maintenance contract

Expected Life

Green Roof Systems - 30 to 40 years, limited by growing media - 15 to 20 years

Green Wall - 30 years internal, 15 years external, limited by growing media - 15-20 years

Indicative Costs

Please contact Becker Aroma via the 'Suppliers' tab above to confirm pricing.

Purchase Options

Prepayment or Net 30 days for established clients

Constituents

Green Roof System

Material

Weight (%)

Weight (kg/m2)

Recycled Content

Evalon Membrane: PVC, Ethyl Vinyl Acetate (EVA) Thermoplastic

1%

1.5 kg/m2

None

VersiCell, VersiFlex: Polypropylene

1%

2-3 kg/m2

100% Post Consumer

VersiDrain 25P: High Density Polyethylene

0.5%

0.9 kg/m2

None

Geotextile: Polyester

0.5-1%

1-2 kg/m2

None

VersiWeb: Polyethylene

1.5%

2 kg/m2

None

Growing Media: Coir/Pine Bark/Ash

90%

~150 kg/m2 at 200mm depth

100% Post Industrial

Irrigation Lines: Polyethylene

Less than 1%

~1 kg/m2

None

Plants

5%

~10 kg/m2

n/a

Green Wall System

 

Material

Weight (%)

Actual Weight (kg/m2)

Recycled Content

Vertical Greening Modules: Polypropylene

13%

10kg/m2

100% Post Consumer

Growing Media: Coir/ Recycled polystyrene/pine bark

72%

100kg/m2

100% Post industrial

Metal Frames & Pilasters: Steel

15%

20kg/m2

None

Irrigation Lines: Polyethylene

1%

~1kg/m2

None

 

Technical Specifications

Click here for green roof technical specifications.

Click here for green wall technical specifications.

National & International Standards

Evalon is a root-resistant membrane, tested according to the German Landscape Research, Development and Construction Society (FLL).

AS 4419 - Landscape Soils

AS 3743 - Potting Mixes for Premium Potting Mixes

Country of Origin

Evalon Waterproofing Membrane - Germany

VersiDrain 25P - Norway

Geotextile, VersiWeb, VersiCell, VersiFlex, Growing Media, VGM's - Australia

Green Wall Frames and Pilasters - China

Projects

Green Roof Systems

  • Liverpool Hospital, Sydney
  • Wenona Girls School, Sydney
  • Inner Western Suburbs Health Centre, Sydney
  • 30 Public Housing Development Board (HDB) projects, Singapore
  • Theatres on the Bay (Arts Centre), Singapore
  • Forest Lodge, Sydney
  • Queensland Children's Hospital, Brisbane
  • Warburton house, Victoria

Green Wall Systems

  • Zenith Building, Chatswood
  • Fujitsu Building, Melbourne
  • Mooney Ponds Recycling Station, Victoria
  • Curzon Hall Function Centre, Marsfield
  • Orchard Road Plaza, Singapore
  • Chicago Millennium Park, USA
  • Birkenhead Point, Sydney
  • Western Power Building, Perth

Preparation

Green Roof Systems: Roof surface must be smooth and to the fall with necessary drainage systems installed.  Evalon membrane sheets are installed and joins are heat welded.  VersiCell, VersiFlex, or VersiDrain 25P is then installed followed by geotextile, VersiWeb for steeper slopes, growing media, irrigation and then plants.

Green Wall Systems: Modules containing selected plants are grown in a nursery environment prior to installation.  Once established the modules are transported to site, where frames are installed into wall anchored pilasters.

ECOSPECIFIER LIFE-CYCLE ASSESSMENT

INTEGRATED DESIGN AND POLICY ISSUES

Cities and dense urban areas are generally warmer than surrounding rural areas. This can be mainly attributed to solar radiation being absorbed by common building materials and structures, and the subsequent re-radiation of heat back into the surrounding environment. Cities also generally have less green space or vegetation than suburban or rural areas, leading to less 'evaporative cooling.' The combination of these factors contributes toward what is known as the 'Urban Heat Island' effect (National Parks Singapore, National University of Singapore, Handbook on Skyrise Greening in Singapore, 2002, Singapore).

Green roofs and vertical green walls provide vegetation that results in the cooling of air, largely through evapotranspiration as well as shading, insulating, and reduced solar radiation absorbed by buildings.  This cooling effect translates into energy and cost savings for air conditioning.

The increased temperature and air pollutant levels common in cities can lead to potentially harmful human health and environmental effects. The installation of green roofs is an effective way to mitigate such negative impacts on both outdoor and indoor environments.  Research is available that details the benefits of indoor plants in improving indoor air quality, such as removing high levels of volatile organic compounds (VOC) from the air.  Even exterior green roofs and walls can improve indoor air quality by filtering pollutants and reducing air temperature around a building especially near air intakes.  Click here for more information on plants and indoor air quality.  Studies show that interior plants and green walls have a positive effect on productivity and health of building occupants.

When green roofs are integrated into the building design they can reduce costs from stormwater drainage connections to sewer, oversized drainage pipes and systems. Another benefit is reduced cooling and heating loads, especially during peak energy periods for summer cooling, which can result in smaller, cheaper equipment specification.  Green roofs also extend the lifetime of roofing materials by blocking UV radiation and eliminating damaging extreme temperature fluctuations.

A traditional roof's runoff contains high concentrations of pollutants from rainwater, roofing materials, and atmospheric deposition. The plants, microorganisms and growing media, especially natural media, used in green roofs help decontaminate run-off, loading fewer pollutants into the storm water systems and water sheds.  Stormwater and sewage systems involve high capital investment into the components and continual maintenance costs. Thus, by capturing and temporarily storing stormwater, green roofs can reduce run-off volumes by delaying discharge past the peak run-off period and through evaporation.  Widespread use of green roofs would help prevent overloading of sewer systems that can result in untreated sewage, from combined sewer storm water systems, overflowing into aquatic environments.  A properly managed fertilization regime will reduce the potential for nutrification of green roof runoff.

Intensive green roofs and walls also provide valuable green space and improved aesthetic quality in cities or heavily built-up areas, where space may otherwise be limited, facilitating community interaction and recreational activity.

 

HUMAN HEALTH

Health
Plants and microorganisms in growing media filter out pollutants, thus improving air quality around building exteriors and interiors, and removing pollutants from rainwater to that can be reused.

A significant amount of research has been undertaken internationally relating to the stress reduction potential of increased levels of natural areas in urban environments. Green roofs and green walls provide a high level of nature response and are likely stress-reducing elements in building design.

Comfort
Green roofs reduce the roof temperature by 25-80°C when compared to a traditional black roof. This can have significant impacts on building heat gain through radiation when air comes in contact with heated surfaces, thus reducing cooling requirements during peak demand, reducing temperature fluctuations throughout the day and improving indoor thermal comfort.

When properly designed and maintained, interior green walls can help control humidity and improve occupant comfort.

Indoor Environment Quality
Plants and microorganisms in growing media filter out pollutants, improving air surrounding building exterior and interior.  Click here for more information on plants and indoor environment quality.

Electromagnetic Radiation
Not Applicable

Safety
For Green Roof Systems, access control is necessary unless balusters and handrails provided in accordance with BCA.

Accessibility
Not applicable

ECOLOGICAL QUALITY

Terrestrial
Emissions - Systems contain plastics made from petroleum.  The extraction of fossil fuels can result in localised emissions around oil fields and spills. 13% of the Green Wall Systems are however post-consumer recycled polypropylene, which reduces the product's potential terrestrial emissions.

Physical - Petrochemical extraction can cause localised terrestrial disturbance around oil fields, via mining infrastructure and subsidence. Products made from post-consumer recycled materials eliminate associated landfill mass, and extraction of petroleum on which polypropylene and polyethylene are based.

Aquatic
Emissions - Petroleum extraction and distribution can contribute to oil spills at sea. 13% of the Green Wall Systems are however post-consumer recycled polypropylene, which reduces the product's potential aquatic emissions.  Green roofs can reduce the levels of pollutants in building runoff, but proper management of fertilisation regimes is required to prevent the nutrification of run-off.

Physical - Petrochemical extraction can cause localised aquatic disturbance around oil fields via mining infrastructure and dredging of the seabed. Green roofs and walls reduce the amount of toxics and pollutants in rainwater and storm water as relevant. Products made of post-consumer recycled materials eliminate associated landfill mass, and extraction of petroleum on which polypropylene and polyethylene are based.

Atmosphere
Greenhouse (GHG) - Recent studies have shown that extensive green roofs offer substantial GHG reduction benefits.  An extensive green roof can store approximately 375g carbon per m2 after a two year growing period depending on plant species selection and growing conditions.(Getter et al.  2009.  Carbon sequestration potential of extensive green roofs.  Environmental Science and Technology 43(19):7564-7570).  In addition, Elmich uses a natural growing media that is carbon negative, further reducing the greenhouse intensity of the system, and reducing the greenhouse payback period.  With energy savings and reduced heat island build ups accounted for, the benefits should accrue at a rate to be of significant benefit to GHG reduction targets for 2020.

The figures below represent an approximation of the total GHG emission for the materials involved in an extensive green roof system, (including waterproofing membrane, VersiDrain 25P, geotextile filter fabric, VersiWeb, and irrigation lines) and a green wall system (including Vertical Greening Modules, Growing Media, Metal Frames & Pilasters and Irrigation Lines). The emissions of the materials involved in green roof systems and green wall system are likely to be offset by carbon storage and energy savings in a medium to long term view.

Greenhouse intensity - Approximately 21.48 kgCO2e/m² of an extensive green roof system and 80.29kgCO2e/m² for a green wall system not including carbon negative values from plants and growing media.

Recycling saves up to 80% of the CO2 released by making of plastics (already included in figures above). Sourced from Envision plastics. Calculations also based on data sourced from Bath University, UK.

Transport intensity - Product is manufactured in Germany, Norway, China and Australia. GHG intensities for shipping product are shown below.

  • Greenhouse Intensity for Container Shipping of Evalon (Norway) - 0.37 kgCO2e/m2
  • Greenhouse Intensity for Container Shipping of VersiDrain 25P (Germany)  - 0.22 kgCO2e/m2
  • Greenhouse Intensity for Container Shipping of Green Wall Frames and Pilasters (China) - 1.82 kgCO2e/m2

Table below provides land transportation greenhouse intensity figures to help calculate the greenhouse gas intensity of land transportation from shipping port.

Light commercial vehicle

Rigid Truck

Articulated Truck

0.001451 kgCO2e / kg.km

0.000195 kgCO2e / kg.km

0.000069 kgCO2e / kg.km

Transport intensity figures sourced from Australian National Greenhouse Gas Inventory 1990, 1995 and 1999 and WWF International, Inland Navigations and Emissions, 2005.

Operational efficiency - Green roofs and walls take advantage of unused space, even converting roof area into useable outdoor areas.  Extensive green roofs can be designed using hardy, succulent species that are resistant to the harsh growing conditions of roof tops and require little maintenance.  Irrigation systems can be installed to automatically provide water to green roofs and vertical green walls.  Elmich recommends a slow release fertilizer be applied upon installation of plants, which provides nutrients to plants for approx. 9 months.  VersiDrain 25P can store 6.1 litres of water per m², reducing irrigation requirements.

Re-use Efficiency The Elmich Green Wall System is modular, with potential for removal and reuse in another location during its lifetime.  Green roofs are living roofs and unable to be reused, however plastic components of the system may be able to be reused if the green roof was removed.

Toxics and Pollutants - Green roofs and walls reduce the amount of toxics and pollutants in the air.

Ozone Depletion - No materials used have any known ozone depleting effects from their use or manufacture.

Urban Heat Island Effects - Green roofs and walls reduce urban heat island effects.  A study conducted in Toronto, Canada showed that widespread implementation (75%) of green roofs could significantly reduce local ambient temperature by as much as 2 degrees C (Banting et al. 2005. Report on the Environmental Benefits and Costs of Green Roof Technology for the City of Toronto, Ryerson University).

Noise - Green roofs and walls provide noise insulation from the exterior, and internal green walls can provide noise insulation between rooms. Plants also absorb sounds, especially those of high frequency usually emitted by office equipment, and building equipment.

Biodiversity
Green roofs and walls increase biodiversity by providing a habitat for plants and other organisms such as birds and insects.  Plant specification can be specifically tailored to increase local biodiversity with the use of native species.

RESOURCE DEPLETION

Resource Efficiency
Elmich uses a majority of natural growing media, made from coir, a lightweight moisture holding fibre derived from coconuts.  This is a waste, renewable media and a sustainable alternative to peat, which takes hundreds of years to form; its extraction destroys ecosystems and releases large amounts of greenhouse gases. In addition to coir Elmich specifies composted pine bark, ash and recycled garden waste.

Other components of the system include virgin and recycled polymers manufactured from petroleum, a limited natural resource.

Embodied Fossil Fuel Energy
~666 MJ/m² of an extensive green roof system, not including fertilizers and plants.
~1575 MJ/m² of an extensive green roof system, not including fertilizers and plants.

Recycling saves up to 60% of the Embodied Fossil Fuel Energy used to make polypropylene and polyethylene (already included in figures above). Sourced from The Cambridge-MIT Institute, University of Cambridge. Calculations also based on data sourced from Bath University, UK.

Transport intensity - Product is manufactured in Germany, Norway, China and Australia.

  • Greenhouse Intensity for Container Shipping of Evalon (Norway) - 4.6 MJ/m2
  • Greenhouse Intensity for Container Shipping of VersiDrain 25P (Germany)  - 2.7 MJ/m2
  • Greenhouse Intensity for Container Shipping of Green Wall Frames and Pilasters (China)  - 22.3  MJ/m2

Embodied Water
The average expected water requirement of an extensive Elmich Green Roof is approximately 1-2 L/m²/day with succulent species.

The average expected water requirement of an intensive Elmich Green Roof is approximately 6-10 L/m²/day, utilizing shrubs and large tree plantings.

The average expected water requirement of an external Elmich Green Wall is approximately 4-6 Lt/m²/day, and internal Elmich Green Wall is approximately 2-3 L/m²/day.

Durability
All plastic modules (VersiCell, VersiDrain, VersiFlex, VersiWeb VGM's, Evalon) are inert polymers, resistant to water borne contaminants, including fertilizers, and have high UV resistance.

The plastic components have a life expectancy of up to 30-40 years.  The life of the growing media is limited to 10-15 years because it is made of natural material that will eventually break down, compact, and may need to be replaced.

Reusability
The Elmich Green Wall has the potential to be reused, and both green roof systems and green wall system components can be reused with new growing media and plants installed.

Repairability
The Green Wall system lends itself to repair through ease of accessibility and a modular design.

Green Roofs can be repaired depending on accessibility and type of repair required, deeper materials in the system, such as the Evalon membrane, are more difficult to repair and require the disruption of plants and growing media.

Design for Dematerialisation
Although the waterproofing membrane is comprised of contentious PVC material, it is very durable and root resistant, certified by FLL, (The Research Society for Landscape Development and Landscape Design) a Germany authority on green roof materials, thus eliminating the need for additional membranes for root protection.

Design for Disassembly
The Elmich Green Wall has a modular design, with units fitting on a frame.  The system can be easily assembled and disassembled.

Recyclability
All plastic materials are commonly recycled materials, except Evalon membrane, however recyclability is limited to the availability of local recycling facilities and condition of plastic upon removal.  Growing media can be recycled into other soil mixes after its lifetime.

Maintenance
Ongoing plant maintenance is required, including monitoring of fertilizer regimes.  Intensive Green Roof maintenance is similar to ground landscaping maintenance. Elmich selects easy to maintain plants to minimise maintenance.

Product Takeback Scheme
No

Extended Producer Responsibility (EPR)
No

CORPORATE AND SOCIAL SUSTAINABILITY

Audits and Environmental Reporting
No

Convictions
No

Environmental Policy
No

Social Enhancement Programs
No

Technology Transfer Programs
No

Environmental Management Systems (EMS)
No

ECOSPECIFIER ISSUES OF CONCERN / RED LIGHTS

None

Information last verified on 14th October 2016

ASSESSMENT COMPARISON

Traditional, concrete, tile and steel non vegetated roofs and walls.

RELATED TOPICS

Indoor plants, Urban Heat Island Effect, Storm Water, Green Roofs & Walls.

sustainability criteria satisfied

Workplace OHS, Occupant Health, Human Wellbeing

Low/Reduced offgassing

Reduced or no toxicity through life cycle

Improved indoor environment

Reduced visual disturbance

Habitat & Biodiversity Conservation

Reduced terrestrial impacts

Reduced aquatic impacts

Contributes to biodiversity

Net-Positive biodiversity contribution

Air Pollution

Reduced or no toxicity through life cycle

Reduced smog-forming potential

Reduced urban heat island potential

Reduced GHG (Greenhouse Gas) emissions

Greenhouse Gas (GHG) Neutral

Greenhouse Gas (GHG) Sink

Resource Depletion

Recycled content-min 10% post consumer

Recycled content- post consumer min 20%

Recycled content- post consumer min 50%

Resource efficiency

Uses rapidly renewable material

Uses renewable materials

Uses agricultural by-products

Energy Resources

Downstream reduction of energy use

Other Vital Signs

Documented manufacturer claims

Expert Assessment