A green roof in Melbourne is known by several names such as ecoroof or living roof. They have been built on buildings for centuries. Many countries in the world have green roof subsidies or programs that encourage ecoroofs. Scandinavia has long had farm house buildings that have sod covered roofs. Some cities in the US are known for their living roofs such as Chicago’s City Hall building.
Basically a green roof is a roof that has vegetation and a growing medium. It will cost more than a standard asphalt shingle roofing application. Rooftop garden costs also depend on the type of green roof installed. There are several differences among green roofs in Melbourne and some applications that may or may not be defined as a green roof such as a container garden green roof.
What Is Green Roofing?
Going green has rapidly become popular for a number of reasons ranging from ecological responsibility to revenue generation and savings. As people install upgraded weathering, siding, windows, and air conditioning systems in their homes, they tend to miss the opportunities that are open with roofing. Using a material that is recycled is a great step in being environmentally friendly. Solar systems like solar shingles will even power your home, reducing your energy costs, greatly. However, roofing systems can also collect rainwater for future reuse.
Rainwater collection is the accumulation of rainwater for future use. Usually this occurs before the rainwater reaches your local aquifer. The system is comprised of a few basic components;
- Catchment Area
The catchment area is the area on which the rainwater is collected, usually the roof. Conveyance refers to the transportation of the rainwater from the catchment area to the storage and is considered the gutters and downspots of a roof. Storage refers to the storage tank where rainwater is collected. In order for rainwater to be consumed it must be treated.
You can determine your roof's square footage by adding the square area of your home or building and adding the area of "roof overhang" or square area of roof that extends beyond the boundaries of your home or building.
You can also estimate your harvested water by using a calculation from Texas A&M University's AgriLife Extension website;
Harvested Water (gal) = catchment area (ft2) X rainfall depth (in) x.623conversion factor
Roofs - A Passive Income Generator
Many people already realize the tremendous value of their roof whenever they step outside in a hot sun. For years people have already been harvesting the opportunities that solar energy roof systems offer. However, with a rainwater collection system, a roof can start generating revenue even when there is no sun out.
Roofs Around The World
Roofs are different wherever you go. Just about every building around the world has one, but they vary in shape, materials, durability and construction. Why is this so and why hasn't someone come up with the definitive roof for all roofers to copy?
Depending where in the world you live roofs have a variety of purposes. Primarily they are to protect against rainfall, but also they give shelter from sun, wind, cold and heat. Characteristics also differ according to local architectural style, available materials, wealth and the purpose of the building.
The main influences on the shape and look of a roof are the materials available, on how the roof is supported and on whether the roof is pitched or flat. Roof support is usually provided by timber, bamboo, cast iron, steel or metal rods encased in reinforced concrete. Bamboo is very flexible and so in Asia, where it is commonly used, roofs are often curved. Timber is versatile and can provide virtually any shaped roof - from low and high pitch to dome shapes. Metal supports are good for large, heavy roofs.
But the basics will remain - areas of high rainfall and snow such as Scandinavia will continue to have high pitched roofs. Dry areas such as the Middle East will stick with the simplicity of flat roofs as they have little rain to deal with. In addition many Governments are increasingly protective of local style and resistant to design which ignores regional tradition and taste.
Roofers around the world have different methods and materials to work with and this will always encourage a range of roofs to enrich our skylines.