Vegetated Roof Layers

They fall into three main categories extensive intensive and semi intensive.

Vegetated roof layers. Vegetative roofs also known as green roofs are thin layers of living vegetation installed on top of conventional flat or sloping roofs. A vegetated roof design green roof is defined as a roof membrane system with a top layer of living plants in an engineered soil blend growth medium. 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. Locations where municipal stormwater retention codes or incentives drive the market.

They are present throughout north america in almost all climate zones and can be installed on various roofing assemblies. Green roofs are also known as vegetative or eco roofs. 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. The foundation of any vegetated roofing system is its waterproofing layer and tremco commercial sealants and waterproofing has four options to support the vr lite vr mod and vr max.

We have chosen to use the word vegetative rather than the word green in this guide because a non vegetative roof could be considered to be environmentally green without being vegetative. The mat based vegetated system consists of a roll grown in the open field unrolled and laid directly on the layer of growing medium and the usual layers of a system drain filter. Typical green roofs consist of multiple layers including a durable waterproof foundation a root management system drainage layers and some type of. Layers of a typical green roof.

Elevation of finished growing media surface of planting area. Projects where the roofer is the vegetative roof installer. As the name suggests vegetative roofs are a design in which plants are used to create a green space on top of a building. Water that is retained in the drainage layer of a vegetated roof assembly after new water additions have ceased and that cannot escape the roof except through evaporation or plant transpiration.

More information on the vr max system is available here. The skyscape 1 0 drainage panel or the skyscape 1 25 drainage grids with added void space and filtration layers are recommended to support this design style. The layers of a green roof. Pre planted mats allow the roof to be vegetated immediately and can be laid at almost any time of the growing season.

Vegetated roofs also referred to as a green roofs eco roofs or living roofs typically include a vegetation layer growing medium retention layer drainage and a root barrier. System components include a membrane protection layer drainage layer filter layer and a root barrier between the soil and roof membrane.