Green Roof Airation Layer

A green roof is a layer of vegetation planted over a waterproofing system that is installed on top of a flat or slightly sloped roof.

Green roof airation layer.

Drainage protection filtration layer it is used for lightweight green roofs terraces and has many functions. Although there are no precise definitions of them an extensive green roof has a shallow growing medium usually less than six inches with a modest roof load limited plant diversity minimal. Root barrier the root barrier is the system that avoids the membrane underneath from being pierced and penetrated by roots ensuring that the system can remain in top shape for as long as it possibly can without needing any adjustments or changes. The clay and silt content of materials used in a rock aggregate drainage layer should be 10 per cent by mass.

The rock aggregate should also have a suitable ph and be low in soluble salts to ensure plant growth is not adversely affected. Bauder sdf drainage layer. Of course this is not all that. Green roofs are also known as vegetative or eco roofs.

They fall into three main categories extensive intensive and semi intensive. Older green roofs often used a permeable layer of rock aggregate such as scoria or gravel for drainage. Additional green roof layers. Thicker welded root barriers will be needed for green roofs involving trees bamboo or other vigorous spreading grasses.

The most common root barriers used are thin polyethylene sheets laid over the waterproofing membrane. To assist in excess water drainage rubber or plastic modeled drainage elements are often included in this layer. They can also be used to increase the size of the root growth zone and provide space for an aeration system. What is a green roof.

Protection drainage and filtration. They can also provide additional functions for the green roof other than just drainage.