New enquiries: 0800 030 9114

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New enquiries: 0800 030 9114

Existing customers: 01438 717175

Benefits of Having a Green Roof

Benefits of Having a Green Roof

Green rooftops are an answer to the problems of conventional urban roofs. They utilise all available space by transforming an unattractive grey roof into a blossoming garden for vegetation and animal life. Though most popular with large city-centre structures, a green rooftop also offers a myriad of benefits to homes and smaller businesses. This article will explain more about green roofs and the many benefits they offer.   

Monaco building roofs with green gardens on


What is a green roof?

A green roof is a rooftop onto which vegetation is grown or wildlife habitats are established. Green roofs come in many forms, but all take their name from their main shared quality: a plush, green aesthetic. 

What are the different types of green roofs?

Green roofs are typically classified into two categories: extensive and intensive, although ‘semi-intensive’ is also applicable in some instances. These labels pertain to the depth and maintenance of the green roof.

Intensive green rooftops feature substantial vegetation, and consequently require much more demanding maintenance. Generally, intensive green rooftops can accommodate 80-150lbs of vegetation per square foot, including large shrubs and trees, as well as other roof garden features such as paths and benches. They typically implement irrigation and drainage systems in a bid to sustain these features. Intensive green rooftops transform a dull, urban roof into a stunning sky garden.

Extensive green rooftops are designed to be practically self-sustaining. They support 10-25lbs of vegetation and require little maintenance. Whereas intensive green rooftops are often used as a habitable space, extensive rooftops are typically only visited for maintenance purposes.


What are the benefits of a green roof?

Green Roof maintenance

There are a wide array of benefits to installing a green roof.

  • Mitigation of stormwater – green roofs have the ability to absorb high volumes of water. In the event of heavy rainfall, green rooftops prevent rapid runoff, releasing it slowly over several hours. This slows erosion and stops areas from flooding.
  • Roof protection – the added shrubbery on a green roof provides a layer of protection against ultraviolet rays and temperature fluctuations that would otherwise damage the roof membrane. The extra vegetation provides additional insulation that cools the membrane, protecting it from deterioration.
  • Improved air quality – plants naturally purify the air by removing harmful toxins from their surroundings. An abundance of greenery on rooftops can significantly improve the air quality of an urban city.
  • Habitat creation – additional vegetation supports the local ecology by providing a new habitat for bugs and other small wildlife.
  • Natural insulation – an extra layer on the roof can help to retain heat from inside the property. This can lead to savings on your energy bill.
  • Creates jobs – developing a green roof requires roofing contractors, plant producers and landscape designers.


Here at John O’Conner, we create green rooftops and living walls for all types of properties. Our experts undertake every stage of the process, from design to construction to maintenance, ensuring you receive a rooftop that is perfectly suited to your personal preferences and building dimensions. If you’d like to enquire about our services, get in contact with our team today.


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