To install extensive vegetative roof covers on pitches steeper than 2 5 12 12 degrees supplemental measures will be required to prevent sliding instability.
Extensive roof garden.
All fytogreens roof gardens are irrigated and designed for low maintenance.
Outside melbourne recycled concrete or clinker ash are used to replace scoria the weight is similar.
A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species.
Saturated weight guide extensive roof garden 140mm to 200mm 20mm scoria or recycled stone mulch nb.
Given those advantages only the extensive green roof will be discussed here.
Varied building systems have been developed to support vegetative covers on steeply pitched roofs.
It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants.
Greening the built environment fytogreen australia s lightweight extensive roof garden system.
Fytogreen designs roof gardens specifically to suit the site conditions inclusive of weight and set down limitations.
The intensive green roof uses planting mediums that have greater depth than the extensive green roof.
An extensive garden roof assembly can be applied to flat roofs and sloping roofs with a pitch of up to 12 12 45 provided the appropriate measures are taken to cope with the shear forces and soil retention.
Extensive green roofs are designed to be low maintenance lightweight systems with no general access.
Extensive green roofs sedum roof systems.
The extensive type of green roof by contrast have a soil depth of 50 150mm only support very drought tolerant plants no irrigation are too harsh an environment for most common weeds and so require very little maintenance.
Extensive roofs are typically lightweight and can be installed over a variety of structures including metal roof decks.
The extensive green roof.
It is typically not designed for public access or recreational use and access is strictly for periodic maintenance.
Pitched roof systems sometimes merge into vertical facade vegetative techniques.
This deeper soil allows intensive roofs to accommodate large plants and dramatic plant groupings.
Extensive roofs are typically lightweight and can be installed over a variety of structures including metal roof decks.
With a thinner vegetation support layer green roofs are lightweight compared to roof gardens.
Extensive and semi extensive roof gardens have a thin growing medium 200mm deep planted with predominantly native vegetation.
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.
Another term for these green roofs is rooftop garden.
