Green Roof Water Retention Layer

Their main function is to incorporate a thin layer of air within the profile of a green roof system while also providing lateral water movement.

Green roof water retention layer.

In all green roof scenarios substrate depths are completely dependent on the vegetation specified and the different drainage water retention layers are selected according to the levels of water required to be held within the construction. Common uses of the grs air layers are. It is made of a filtration veil and the polyamide monofilament fibre network layer. There are two types of green roof.

This means that the water leaves the roof as vapor. Moisture retention and protection mat for extensive green roofs and ballasted roofs. Retention works like this. Extensive green roofs cover the entire roof area with lightweight low growing self sustaining low maintenance planting.

Green roofs are multi layered systems that cover the roof of a building with vegetation and or green landscaping over a drainage layer. Protection drainage and filtration. Drainage protection filtration layer it is used for lightweight green roofs terraces and has many functions. Bitumen resistant biologically and chemically neutral heat resistant.

The vegetation layer must be put directly over the drainage course without using the filtration cover. The basic anatomy of a green roof consists of vegetation growing medium filter membrane drainage layer waterproof root repellant layer roofing membrane support for plantings above thermal insulation vapor control layer and structural roof support. Rain falls onto a relatively dry green roof and the green roof absorbs the water usually in pore spaces later the sun comes out and the plants use the rainwater to evapotranspire. Green roof system with high watre retention capacity especially designed to maximize precipitation retention.

The most critical role of the drainage layer is to provide an adequate flow of water off the roof during and after rainfall. Made of recycled non rotting polyester fibers for water and nutrient retention as well as a protection layer. They are only accessed for maintenance. All three types of roofs require specific layers of roofing materials not found on regular roofs.

Bauder sdf drainage layer material of the drainage layer polyamide monofilament weight of the drainage layer 400 g m. Green roof solutions offers many different drainage layer options depending on system goals regarding water retention. Extensive green roofs with water retention built on pitched surfaces of 5 15 inclination can be landscaped the same way as flat surfaces having only one important difference. The green roof solutions air layers serve multiple purposes.