Green Roofs

The so-called “green roof” is a system creative which allows them to collect rain water and still have functions microclimatic favourable to the building acting as a thermal insulator, and can reduce up to 10 ° C to internal temperature of environments, representing a saving of 25%, with expenditures on cooling. In addition to serving as insulation, acoustic absorbing the noise.

Green Roofs

The green roofs are historically known, from the Hanging Gardens of Babylon, one of the 7 Wonders of the Ancient World, built in the sixth century a. C. by king Nebuchadnezzar II for his wife Amitis, where were planted trees, tropical flowers and tall palm trees.

The same applied in ancient times the green roofs began to be disseminated by the modern architecture after the French architect Le Corbusier launched the 5 Points of Modern Architecture, where the terraces of the gardens were seen as a necessity versus a lack of green areas in the cities of the 20’s.

According to the genius of the architecture Le Corbusier the green roofs or terraces gardens, as he called them, should compensate for the area occupied by the building on the environment, inserting on the terrace in the green area occupied, generating a recreation area that improves the quality of life of residents and reduces the environmental impact.

The 5 Fundamental Points of Architecture were proposed in 1926 in the magazine L’esprit Nouveau and since then has been applied by architects in the whole world. In Brazil, the works of Le Corbusier influenced our architectural icons Lúcio Costa and Oscar Niemeyer in many of his works, including the Palacio Gustavo Capanema in Rio de Janeiro, today the headquarters of the MINISTRY of education, which has a large terrace garden.

Benefits of the Green Roof

The green roof, is a terrace or not, brings many benefits to the city, to the building and the people who can enjoy this system. We have listed some of the main benefits of green roofs, check out:

Reduction of Energy for Cooling the environment: green roofs are ideal for the tropical climate of the brazilian, protects the slab against the direct incidence of the sun and also reduces the thermal temperature, because it acts as a thermal insulator.

The absorption of Rain: The green roof absorbs part of the rain by filtering the water that can be collected and treated for domestic use, including the consumption of the same, if the treatment is effective, or the use for irrigation of gardens, toilet flush and washing of the sidewalks. This rain collected by the roof loses speed and is distributed to the few for the trunking system, avoiding clogging.

Gain of Moisture: This type of vegetation also creates a microclimate around increasing the relative humidity of the air, reducing respiratory problems in periods of drought.

Air purification: Through the process of photosynthesis plants absorb carbon dioxide and other impurities from the air and release oxygen, decreasing the greenhouse effect gases.

Acoustic isolation: The layers of blanket and soil and vegetation act as a filter, acoustic, reducing noise pollution of the environment.

Refuge for Animals Urban: The green roofs are a means of rescuing some species that are threatened by increasing urbanization, birds and insects can take advantage of these spaces, especially the bees which are disappearing in large cities.

Leisure area: The green rooftops are also a retreat from the hectic life of the city for the people, where they can connect with nature, and may include small gardens for individual consumption.

How to Make a Green Roof

To make the green roof is necessary to make an analysis of the weight that the earth and the vegetation will cause on the slab or on the roof structure, it is also necessary to do the waterproofing with a blanket and if possible put a layer of water-repellent and antiraiz, a layer of stones to drain the water that you distribute the excess to a gutter, over a blanket geotextile fabric that prevents the earth pass the earth that can be placed on a support panel and finally the layer of vegetation.

The 5 Fundamental Points of Architecture were proposed in 1926 in the magazine L’esprit Nouveau and since then has been applied by architects in the whole world. In Brazil, the works of Le Corbusier influenced our architectural icons Lúcio Costa and Oscar Niemeyer in many of his works, including the Palacio Gustavo Capanema in Rio de Janeiro, today the headquarters of the MINISTRY of education, which has a large terrace garden.

Benefits of the Green Roof

The green roof, is a terrace or not, brings many benefits to the city, to the building and the people who can enjoy this system. We have listed some of the main benefits of green roofs, check out:

Reduction of Energy for Cooling the environment: green roofs are ideal for the tropical climate of the brazilian, protects the slab against the direct incidence of the sun and also reduces the thermal temperature, because it acts as a thermal insulator.

The absorption of Rain: The green roof absorbs part of the rain by filtering the water that can be collected and treated for domestic use, including the consumption of the same, if the treatment is effective, or the use for irrigation of gardens, toilet flush and washing of the sidewalks. This rain collected by the roof loses speed and is distributed to the few for the trunking system, avoiding clogging.

Gain of Moisture: This type of vegetation also creates a microclimate around increasing the relative humidity of the air, reducing respiratory problems in periods of drought.

Air purification: Through the process of photosynthesis plants absorb carbon dioxide and other impurities from the air and release oxygen, decreasing the greenhouse effect gases.

Acoustic isolation: The layers of blanket and soil and vegetation act as a filter, acoustic, reducing noise pollution of the environment.

Refuge for Animals Urban: The green roofs are a means of rescuing some species that are threatened by increasing urbanization, birds and insects can take advantage of these spaces, especially the bees which are disappearing in large cities.

Leisure area: The green rooftops are also a retreat from the hectic life of the city for the people, where they can connect with nature, and may include small gardens for individual consumption.

How to Make a Green Roof

To make the green roof is necessary to make an analysis of the weight that the earth and the vegetation will cause on the slab or on the roof structure, it is also necessary to do the waterproofing with a blanket and if possible put a layer of water-repellent and antiraiz, a layer of stones to drain the water that you distribute the excess to a gutter, over a blanket geotextile fabric that prevents the earth pass the earth that can be placed on a support panel and finally the layer of vegetation.

The roofs of wooden you need to use a plywood as a base, already in the concrete slab is not required.

Always use skilled labor to do the service and always check out the services running earlier, mainly old ones to verify if there have not been problems due to poor execution.

Green roof with Trees

Always have those doubts about what the type of vegetation used in green roofs and many people wonder if they can plant trees on the terraces, as well, is it possible to plant trees provided that the layer of the earth has an area large enough to accommodate the entire root, then it is indicated to use small trees and checking to see the size of their roots, but either way the whole tree will need a layer of the great of earth, therefore will weigh the roof and the structure will have to be strong enough to withstand the extra weight.

It is always a safe option to opt for grasses, vegetables and flowers roots small.

Gallery

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Green Roof Shed Plans

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© Arquitectonica

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File:Toronto City Hall Podium green roof by LiveRoof, July …

File:Toronto City Hall Podium green roof by LiveRoof, July ...

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