In Copenhagen, green roofs are already compulsory
The green roofs began to be used in Germany to maintain the vegetation in a culture medium; later it became an alternative for the inhabitants of the big cities without the possibility of having much space.
Copenhagen is the second city in the world that implements legislation of this type: the first was Toronto, Canada, where a similar law was implemented that has resulted in 1.2 millions of green square meters in different types of buildings, as well as energy savings of more than 1.5 million kWh for the owners of said buildings.
The plan of Copenhagen is to cover with vegetation the roofs of the city in order to become carbon neutral in the 2025 year.
The benefits of green roofs are immense:
- Absorb up to 80% of rain, helping to reduce flooding problems
- Reduce urban temperatures
- They protect the building from UV rays and sudden changes in temperature
- They are used to grow self-consumption products, reducing costs for the inhabitants
- Contribute to better air quality in cities
Copenhagen has approximately 20,000 square meters with roofs which translates to green surface. There are now 30 buildings with green roofs but with this new law it is expected that annually increase 5,000 square meters This quantity.
In other cities such as Switzerland, green roofs are mandatory in all new buildings, while in the CDMX people who use this initiative receive the 10% discount on the payment of their property. Would it be a utopia to think that in all the cities of the world one day it is law to have green spaces on the roofs of buildings?
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