As you probably imagine, building your own rooftop garden is not as easy as planting shrubs in the ground, but with research, good planning and determination, such a project could substantially upgrade your lifestyle. If you are ready to embark on this dazzling adventure, the photos below should inspire you in deciding on the overall design of the new garden. Your landscaping contractor will work hand-in-hand with a roofer to get the best outcome.

A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and a growing medium, planted over a waterproofing membrane. It may also include additional layers such as a root barrier and drainage and irrigation systems.[1] Container gardens on roofs, where plants are maintained in pots, are not generally considered to be true green roofs, although this is debated. Rooftop ponds are another form of green roofs which are used to treat greywater.[2] Vegetation, soil, drainage layer, roof barrier and irrigation system constitute green roof.[3]

Green roofs serve several purposes for a building, such as absorbing rainwater, providing insulation, creating a habitat for wildlife, increasing benevolence[4] and decreasing stress of the people around the roof by providing a more aesthetically pleasing landscape, and helping to lower urban air temperatures and mitigate the heat island effect.[5] Green roofs are suitable for retrofit or redevelopment projects as well as new buildings and can be installed on small garages or larger industrial, commercial and municipal buildings.[1] They effectively utilize the natural functions of plants to filter water and treat air in urban and suburban landscapes.[6] There are two types of green roof: intensive roofs, which are thicker, with a minimum depth of 12.8 cm (5.0 in), and can support a wider variety of plants but are heavier and require more maintenance, and extensive roofs, which are shallow, ranging in depth from 2 cm (0.79 in) to 12.7 cm (5.0 in), lighter than intensive green roofs, and require minimal maintenance.

ROOF GARDENS SUBSTANTIALLY INCREASE PROPERTY VALUES

A roof garden substantially enhances re-sale or rental values. It raises property values.  The most obvious advantage of a roof garden is as a valuable amenity that enhances the worth of the structure it occupies for a relatively modest expenditure. It is additional or reclaimed usable space. Independent researchers in London (Marsh and Parson’s) have found that a roof garden or balcony typically adds 10-25% more value to the property in high-end neighborhoods. 

A ROOF GARDEN CAN INCREASE THE LIFE EXPECTANCY OF YOUR ROOF

One of the great benefits of roof gardens, vertical gardens and green roofs is that by protecting the underlying roof covering, they extend the life of the existing roof fabric by up to 200%. A green roof protects the roof membrane from climatic extremes and physical abuse, thereby greatly increasing the life expectancy of the roof. 

This existing roof is protected by a rubber drainage mat, with pedestals supporting the lightweight pavers. The actual roof is completely protected from climatic extremes.  In the event of any roof repair, these pavers can be lifted up with ease to accommodate any maintenance.