Advanced Green Roof Cape Town, South Africa — We design, install and maintain custom extensive,

Advanced Green Roof Cape Town, South Africa - We design, install and maintain custom extensive,

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Green Roof Benefits green roofs cape town south africa

“Green roofs are roofs that are partially or completely covered with vegetation and a growing medium”

    Urban greening has long been promoted as an easy and effective strategy for beautifying the built environment and increasing investment opportunity.

Green roofs can contribute to landfill diversion by:

    Prolonging the life of waterproofing membranes, reducing associated waste The use of recycled materials in the growing medium Prolonging the service life of heating, ventilation, and HVAC systems through decreased use

Storm water Management

    With green roofs, water is stored by the substrate and then taken up by the plants from where it is returned to the atmosphere through transpiration and evaporation.

    In summer, depending on the plants and depth of growing medium, green roofs retain 70- 90% of the precipitation that falls on them; in winter they retain between 25- 40%.

    Green roofs not only retain rainwater, but also moderate the temperature of the water and act as natural filters for any of the water that happens to run off.

    Green roofs reduce the amount of storm water runoff and also delay the time at which runoff occurs, resulting in decreased stress on sewer systems at peak flow periods.

Moderation of Urban Heat Island Effect

    Through the daily dew and evaporation cycle, plants on vertical and horizontal surfaces are able to cool cities during hot summer months and reduce the Urban Heat Island (UHI) effect. The light absorbed by vegetation would otherwise be converted into heat energy. UHI is also mitigated by the covering some of the hottest surfaces in the urban environment – black rooftops. Green roofs can also help reduce the distribution of dust and particulate matter throughout the city, as well as the production of smog. This can play a role in reducing greenhouse gas emissions and adapting urban areas to a future climate with warmer summers.

    The plants on green roofs can capture airborne pollutants and atmospheric deposition. They can also filter noxious gases. The temperature moderating effects of green roofs can reduce demand on power plants, and potentially decrease the amount of CO2 and other polluting by- products being released into the air.

Green roofs help to reach the principles of smart growth and positively affect the urban environment by increasing amenity and green space and reducing community resistance to infill projects. Green roofs can serve a number of functions and uses, including:

    Community gardens (e.g. local food production or co- ops) Commercial space (e.g. display areas and restaurant terraces) Recreational space (e.g. lawn bowling and children’s playgrounds

    The growth of green roof and wall market gives new job opportunities related to manufacturing, plant growth, design, installation, and maintenance. There is significant potential for new growth in dense urban areas that were previously unusable.

Energy Efficiency

    The greater insulation offered by green roofs can reduce the amount of energy needed to moderate the temperature of a building, as roofs are the sight of the greatest heat loss in the winter and the hottest temperatures in the summer.

Increased Roofing Membrane Durability

    The presence of a green roof decreases the exposure of waterproofing membranes to large temperature fluctuations, that can cause micro- tearing, and ultraviolet radiation.

Fire Retardation

    Green roofs have a much lower burning heat load (the heat generated when a substance burns) than do conventional roofs (Köehler 2004).

Reduction of Electromagnetic Radiation

    Green roofs have excellent noise attenuation, especially for low frequency sounds. An extensive green roof can reduce sound from outside by 40 decibels, while an intensive one can reduce sound by 46- 50 decibels (Peck et al. 1999).


    Green roofs can increase a building’s marketability. They are an easily identifiable symbol of the green building movement and can act as an incentive to those interested in the multiple benefits offered by green roofs. Green roofs, as part of the green building movement, have been identified as facilitating (Wilson 2005): Sales Lease outs Increased property value due to increased efficiency Easier employee recruiting Lower employee and tenant turnover Design- Specific Benefits

Increased Bio diversity

    Green roofs can sustain a variety of plants and invertebrates, and provide a habitat for various bird species. By acting as a stepping stone habitat for migrating species they can link species together that would otherwise be fragmented. Increasing bio diversity can positively affect three realms: Ecosystem: Diverse ecosystems are better able to maintain high levels of productivity during periods of environmental variation than those with fewer species Economic: Stabilized ecosystems ensure the delivery of ecological goods (e.g. food, construction materials, and medicinal plants) and services (e.g. maintain hydrological cycles, cleanse water and air, and store and cycle nutrients) Social: Visual and environmental diversity can have positive impacts on community and psychological well- being

Improved Health and Well- Being

    Using green roofs as the site for an urban agriculture project can reduce a community’s urban footprint through the creation of a local food system. These projects can serve as a source of community empowerment, give increased feelings of self- reliance, and improve levels of nutrition.

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