In short a green roof is made to purposely grow grass.
Roof garden layers.
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.
Garden roof assembly hydrotech s garden roof assemblies combine the proven performance of our monolithic membrane 6125 roofing waterproofing with proven green technology.
Jan 14 2018 experts in thai landscaping and garden design tropical gardens bangkok landscape design and garden construction in thailand.
It is made mostly of xps extruded polystyrene boards pir panels or polyurethane foam.
Protection drainage and filtration.
Unlike conventional earth covered structures garden roof assemblies are lightweight and can be installed on a wide variety of new and existing structures.
It is made of a filtration veil and the polyamide monofilament fibre network layer.
When selecting a growing medium for a roof top garden consider average rainfall in the summer months average high and low temperatures during the growing season and the types of plants to be grown and their needs.
The layers of a green roof regardless of the depth of growing media soil and plant types used above the underlying architectural elements of most vegetated roof systems are typically the same with each layer playing a crucial role.
Layers of a typical green roof.
The rock aggregate should also have a suitable ph and be low in soluble salts to ensure plant growth is not adversely affected.
Green roofs are also known as vegetative or eco roofs.
Replacing the impervious surface of a conventional roof with.
With a green roof the plants layer can shield off as much as 87 of solar radiation while a bare roof receives 100 direct exposure.
Drainage protection filtration layer it is used for lightweight green roofs terraces and has many functions.
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.
If you re in an area with a lot of humidity and or rain during the growing season you would need a media that dries out fast.
Insulation layer protection layer makes a terrace garden resistant to moisture and temperature fluctuation and provides it sufficient mechanical strength.
Bauder sdf drainage layer.
To make this process work various green roof layers are created to give it the most effective and solid chance of being successful.