A green roof is a system that uses vegetation rather than only standard roofing materials to create a roof covering. The vegetated layers are located above the building’s conventional waterproofing layer. The use of vegetation in construction dates back to early times, but it has become a popular alternative to traditional roof finishes in recent years.
(Green Roof : Arlington County 2010)
What is an Intensive Green Roof?
Intensive Green Roofs include the construction of a garden at rooftop level, by the planting of greenery, vegetation, and grassed regions. The alternatives to a standard rooftop is endless, as the owner of a property can use a variety of materials not just foliage such as decking and wood chippings, so as to create a garden like rooftop.
This sort of green rooftop is intensive as the kind of plants and vegetation utilised need a highly specialised substrate to help them continue to grow. Subsequently, installation and systematic support is required along with normal watering and bolstering to guarantee the plants full sustenance.
What is an Extensive Green Roof?
Extensive Green Roofs are planted for ecological reasons with various vegetation: sedum (succulents), plants, herbs and grasses. This kind of green roof requires minimal upkeep making it the most practical. The plants employed are wind, ice and dry spell safe, allowing them to make do in the intense, exposed conditions experienced at rooftop level. The plants give a vivid and alluring green rooftop, which changes normally throughout the seasons.
Green roofs offer numerous favourable benefits to the purchaser, the environment and wildlife as it shows environmental innovative and has financial and ecological advantages.
(House Leak: Hans 2018)
What are the benefits of having a green roof?
- Prolonged future – builds the future of the rooftop waterproofing and decreases entire life costs.
- Lessens heating and cooling costs – improves the warm properties of the construction.
- Reduces dampness within a building.
- Enables the building to mix in with the environment.
- Gives substitute planting without building within the current landscape.
- Decreases flood hazard – green rooftops can hold 40-90% of the water they receive.
- Lessens CO2 contamination.
- Gives a characteristic territory to dislodged widely varied vegetation.
- Diminishes noise pollution both remotely and inside.
Green roof advantages are that they provide natural life. They give extra protection and increase the durability of the rooftop by shielding its surface from environmental exposure. City inhabitants additionally have the unique advantage of enjoying the green rooftops. Little-scale or broad, green roofs utilise a thin layer of supplement poor soils, which delivers a sketchy vegetation cover, vulnerable to dry spell pressure. This is helpful to some plants and insects.
(Doves on a roof: fernandosilvaeb2 2018)
The best benefit of a green roof is the appeal it has on wildlife. Regardless of which type of green roof you choose, it will: form new habitats and nourishment for wildlife, help endangered species and increase biodiversity. Biodiversity is attained by using an array of plants and by adding natural extras such as woodland and water features. Green roofs are new homes to all kinds of wildlife from insects, birds to wild mammals.
Give it a try! Plan and create your own rooftop garden for yourself and your local wildlife.
Author: Rachel Nurse