One they are heavy due to soil and the fact your plants need water to survive.
Green roof and nurseries differences.
Due to the differences in growing medium between an extensive and intensive green roof the latter can accommodate deeper plantings with more diversity.
Typically these roofs will have more soil and some small shrubs as well as the low growing wildflowers and sedums found on an extensive roof.
An intensive green roof is more like a conventional garden or park and can have virtually no limit to the plant types that can be used.
Ideal for large flat roof buildings and apartments.
Green and blue roofs are both excellent choices when it comes to environmental sustainability.
This article describes the distinction between the two and outlines the benefits of each.
Both benefit the environment.
However the green roof has to be designed to support the kinds of plants you intend to grow.
There are three types of green roofs.
Getting enough water to the plants and providing good drainage are two main concerns.
You have to nurture it in order for it to thrive unless it.
The benefits of green roofs are undeniable.
So make your plans known to your architect structural engineer and green roof system provider.
It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants.
This adds to the expense of a green roof.
Intensive green roofs are widely used on commercial buildings where owners want to have large green areas that incorporate all sizes and types of plants these roofs will have grasses ground covers flowers shrubs and even trees.
Two a green roof is akin to a garden.
Green roofs are built as an extension of the foundation where plants and garden areas are constructed.
Suitable for low sloped residential roofs and retrofits.
If you want any large or tall plants you ll need a semi intensive or intensive green roof.
A green roof like your lawn is generally flat thin 4 6 of soil and planted with a family of short plants called sedum.
But the difference between a green roof and a rooftop garden is kind of like the difference between a turf lawn and a patio garden bed with trees and shrubs.
Plants for intensive and semi intensive green roofs.
One of the easiest green roof constructions is available from a company called greengrid.
3 6 of light weight growing medium.
However they each have a separate set of goals.
Desert grasses and succulent plants.
Components of an intensive green roof click for high res version intensive.
On green roofs plants cool air through natural processes and shield buildings from high heat levels produced by direct sunlight.
Extensive green roofs designed for environmental solutions.
A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species.