Green Roof Drainage Mat Thickness

Protection drainage and filtration.

Green roof drainage mat thickness.

17 20 mm. Intensive to describe green roofs that are thick enough. Green roof systems of this type are drained by a multi layer fabric mat called a drainage mat that combines soil separation drainage and protection functions. Developed by fm approvals llc fm standard 4477 is the approval standard for vegetative roof systems.

It is ideal for drainage and drying behind stucco and. In july 2011 the liveroof hybrid green roof system became the first to be fm approved according the fm standard 4477. The gr52 can withstand 0 352 gallons per square foot or 1 4 gallons per panel. Extensive green roofs are less than six inches deep and are typically 2 4 inches in depth.

Bauder sdf drainage layer material of the drainage layer polyamide monofilament weight of the drainage layer 400 g m. Designed for sloped green roofs. Their light weight makes them ideal for retrofit projects on older buildings or any stricture with limits on the total weight load. Systems with drainage mats.

It evaluates green roof performance related to fire foot traffic resistance and water leakage. It is specified in some very low pitched extensive green roofs. Compared with green roofs systems using drainage plates or granular drainage this system is the fastest to install and creates the thinnest and lightest green roof assembly. Sdf mat drainage filtration layer.

The nominal thickness of a green roof is the approximate total height of the soil and drainage components that constitute the green roof system excluding the roof structure insulation waterproofing and plants. Made of non rotting fibers penetration resistant for water and nutrient retention as well as protection layer. The board is effective with fiber cement wood and foam backed vinyl. It is made of a filtration veil and the polyamide monofilament fibre network layer.

Roofs that have potted plants or container gardens are not generally considered green roofs. It is common practice to use the term extensive to describe green roofs that are very thin and will only support hardy drought resistant vegetation such as sedums herbs and perennials. The sdf mat drainage filtration layer is a multi functional drainage and filter layer which prevents the roots of the plants in the xf301 sedum system from becoming waterlogged. Because dc14 is made of extruded polystyrene xps it does not absorb moisture and is not a food source for mold.

Green roof solutions gr32 and gr52 drainage panels come in 24 x 24 interlocking squares constructed of 100 recycled high density polypropylene hdpp. The grs gr52 panel size is 24 x 24 x 2 125.