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.
Roof garden layers.
It is made of a filtration veil and the polyamide monofilament fibre network layer.
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.
Bauder sdf drainage layer.
Green roofs are also known as vegetative or eco roofs.
Garden roof assembly hydrotech s garden roof assemblies combine the proven performance of our monolithic membrane 6125 roofing waterproofing with proven green technology.
The plants that go into a green roof are usually sedum or other shallow rooted plants that will tolerate the hot dry windy conditions that prevail on most rooftop gardens.
To make this process work various green roof layers are created to give it the most effective and solid chance of being successful.
Protection drainage and filtration.
Drainage protection filtration layer it is used for lightweight green roofs terraces and has many functions.
Jan 14 2018 experts in thai landscaping and garden design tropical gardens bangkok landscape design and garden construction in thailand.
The rock aggregate should also have a suitable ph and be low in soluble salts to ensure plant growth is not adversely affected.
Older green roofs often used a permeable layer of rock aggregate such as scoria or gravel for drainage.
It is made mostly of xps extruded polystyrene boards pir panels or polyurethane foam.
The clay and silt content of materials used in a rock aggregate drainage layer should be 10 per cent by mass.
Layers of a typical green roof.
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.
Replacing the impervious surface of a conventional roof with.
The layers of a green roof are as follows from top to bottom.
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.
Unlike conventional earth covered structures garden roof assemblies are lightweight and can be installed on a wide variety of new and existing structures.
In short a green roof is made to purposely grow grass.