Green Roofs

Terra Landscaping Ltd.

Whatever your landscaping needs - whether residential, commercial or industrial we can provide you with professional service to make your project unique.


Terra Landscaping Ltd. is proud of its ongoing commitment to greener practices and providing its clients sustainable landscaping options. Specialised in all aspects of landscape design and construction, Terra is taking its level of expertise to new heights, literally. Terra Landscaping Ltd. is available to consult with architects, builders, homeowners and project managers to discuss the integration of a green roof system with your home or work place.

Green roofs are also known as rooftop gardens. These roof gardens are planted over a new or existing roof structure using a strong, specialized membrane to protect the building. Studies have shown that having a green roof will double the life of a standard roofing system and can be economical in the long run. Green roofs also increase property value, especially when an intensive rooftop garden is developed.

Terra Landscaping Ltd. is NOW available to assist you with your green roof projects

Benefits of a Green Roof (vegetated roof) For a Building

  • Absorbs rainwater, hence reduces storm water run-off
  • Filters pollutants and heavy metals from the rainwater
  • Improves air quality
  • Reduces noise
  • Acts as fire retardant
  • Provides extra usable space
  • Reduces heat loss in winter and cooling needs in summer
  • Creates habitat for wildlife
  • Increases roof life

Benefits of a Green Roof

1. Absorbs rainwater, hence reduces storm water run-off

Intensification of construction in urban centres leads to decreased green space on the ground level. The loss of green space is not simply limited to a building’s footprint, but also includes entrances, sidewalks and parking lots that are paved to serve these new structures. Green spaces were once relied upon to absorb rainwater. When it rained, the city’s green areas absorbed some of the water. What could not be absorbed flowed on the concrete surfaces until it could be drained away in the city’s storm system. With this new development and loss of green space in urban centres, some city streets are often flooded after a normal summer storm because the existing storm sewer systems are not designed to handle this increased water run-off. A green roof can be designed to compensate for loss of green spaces measuring up to the surface area of a building’s footprint. Rather than being absorbed at the ground level, water is absorbed at a higher elevation – on the roof. A green roof will absorb the water it needs for the vegetation. Depending on the design, the remaining water can either slowly be drained away from the building to not overwhelm the city’s storm system, or can be collected for future use.

2. Filters pollutants and heavy metals from the rainwater

Industrial activity and high density of cars in urban centers contaminates rains that fall over cities with pollution and heavy metals. Plants are known to be great filters for such contaminants. When it rains, the vegetation used on a green roof absorbs the water it needs. The rest is filtered through the soil medium and the plants’ root systems resulting in contaminant-free water available for other uses.

3. Improves air quality

The increase of any kind of vegetation increase the air quality. Plants used in a green roof not only produce oxygen, but filter dust and pollution in the air.

4. Reduces noise

The vegetation, growing medium and moisture used in a green roof acts as a sound barrier, greatly decreasing the cacophony of an urban setting.

5. Acts as a fire retardant

The vegetation, growing medium and moisture used in a green roof decreases the rate of spread for fire.

6. Provides extra usable space

A green roof can be designed to provide additional usable space for human activity, similar to that of a public park.

7. Reduces heat loss in the winter and cooling needs in the summer

A green roof is well insulated allowing for less loss of hot air in the winter and cool air in the summer.

8. Creates habitat for wildlife

All vegetation will attract some kind of wildlife ranging from birds to small mammals. A green roof can be designed to attract specific wildlife depending on location and species of the vegetation used.

9. Increases roof life

A green roof is designed and built with very strict load bearing and water resistant guidelines and will last longer than a normal roofing system.