Green Rooftops the Next Big Trend
What are green rooftops?
Maintaining greenery and gardens on the roof of a house or building makes it a green rooftop. Green roofs help reduce the energy required to either heat a building during winters or cool it during summers. This way the roof is able to retain rainwater and rid building users of run-off problems. Wider use of such rooftops would be a great step for the environment.
What are the benefits?
• To start with, green rooftops would control seepage of rainwater as it will be absorbed by plants. Plants act as natural filters so the water would not just run off.
• Sewer lines would face less load during peak rains.
• Plants would work as a great counter to airborne pollutants. They would be filters of toxic gases, improving our health.
• Noise penetration is reduced where greenery is grown.
• Green rooftops would be a contribution to landfill diversion as you would be extending the life of waterproofing membranes by using recycled materials and reducing the services of heating, ventilation and HVAC systems.
• Finally, it is a touch of natural beauty. You are beautifying the building with a rooftop garden and these kinds of infrastructure would be a great investment opportunity.
• You are creating a different area for hangout purposes or a different kind of commercial space.
How does a green roof top work?
A green roof is comprised of many layers and they all need to be composed together to function properly. The green roof must be effective, durable and safe. A green roof is to be maintained as it requires regular irrigation, trimming, weeding and fertilizing. The points you should remember are to have concrete finishing, waterproofed, root barriers, drainage layers, geotextile filters, lightweight and water-retaining materials.
What is India doing?
Currently, private homes are considering creating their own green gardens on rooftops. Places like Mumbai, Coimbatore, Chennai and Bengaluru are initiating the concept of green rooftops. This trend is growing all over the world as it benefits the urban environment and the inhabitants. But India has not understood the importance just yet. Greater Noida has a few infrastructure projects that have initiated green rooftops.
What more can India do?
India should start investing in making green rooftops on existing buildings. The government should make it a policy to have a certain amount of green rooftops in a project. DDA society complexes would be a great start.
Also, the government should implement the policy on upcoming infrastructure in different urban centres. It can, in fact, be made a mandatory feature when building new infrastructure. Green rooftops should also be the trend while renovating old infrastructure as this only benefits the environment and the habitants of the city.