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What are Green Roofs?


Green Roofs are buildings where the roofs are in a vegetation, it is important that they have drainage and irrigation systems in order for them to work successfully. The plants and vegetation can take the place of regular concrete, tile, or steel roof. All roofs are designed to shed water, the only difference with green roofs is that they are living breathing roofs that can grow food and other.
These roofs can be very beneficial to both the person using this innovative technology, and helping create a healthy environment. As people want to become more ecologically friendly, green roofs will continue to become more available for people who to follow this growing trend.



















The Parts of a Green Roof


Green Roofs consist of 6 layers
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Chicago City Hall


(Starting from bottom)
1. Monolithic Membrane: This prevents any liquid from leaking into structure.
2. Root stop: This is the barrier that stops the roots from growing any deeper then they already are.
3. Dow Styrofoam Insulation.
4. Moisture retention and drainage layer.
5. System Filter.
6. Specially engineered lightweight soil.
7. Vegetation.


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Layers of Green Roof




Benefits of Green Roofs




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Benefits of Green Roofs


Environmental Benefits

One of the most popular reason people are beginning have Green Roofs added to their homes and also other structers is the money they save. The extra insulation from added mass reduces the need of heating and cooling the building. Needing to heat and cool your house required less power and electricity, less dependency on fossil fuels and other forms of non-renewable energy will greatly help the environment. Plants filter pollutants and pull carbon dioxide out of the air, additional plants and vegetation allow places with several buildings and sky scrapers to reduce these pollutants and lower disease rates like asthma. By cleaning the air and cooling the cities it is located in, green roofs also help any other living things that require a healthy, pollutant free, environment.

Financial Benefits

Green Roofs can be expensive to create, but in the long term they will save you lots of money. Having a green roof on your home will increase your roof life span substantially, this means you will no longer need to spend thousands of dollars on a new roof every 5 - 10 years. Not only can these roofs increase roof life span, but also increase real estate value and cut back on heating and cooling expenses. When the technology for green roofs becomes more known and when this product reaches the maturity stage, the prices of green roofs will begin to drop making them more affordable and available for people around the world.


History of Green Roofs


Green roofs have been around for much longer than people think, the first recorded proof of a green roof was in the Hanging Gardens of Babylon around the 16th Century. These roofs grew in popularity during the 1960's in Germany and otherparts of Europe and are now beginning to spread around the world as an eco-friendly option for people to use. Germany continues to lead the world in the newest, and most efficient green roof technology as they have fewer government restrictions and more funding.


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Modern Day Green Roof
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Faroe Island Green Roof Homes
















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Hanging Gardens of Babylon



Article

http://www.nytimes.com/2005/08/10/realestate/10green.html?pagewanted=all




Glossary

- Membrane - A thin, pliable sheet or layer.

- Fossil Fuels - Any combustable organic material, as oil, coal, or natural gas, derived from the remains of former life.

- Retention - The act of retaining.


References

  1. http://weekly.ahram.org.eg/2005/745/en2.htm
  2. http://www.greenroofs.com/chic_sustainability.htm
  3. http://www.mnec.gr/el/press_office/DeltiaTypou/articles/article0933.html
  4. http://www.youtube.com/watch?v=pp79mGpomf4
  5. http://www.youtube.com/watch?v=pp79mGpomf4
  6. http://books.google.ca/books?id=oHMxwLVbSDMC&pg=PA26&redir_esc=y#v=onepage&q&f=false