Green Roof Drainage Mat Thickness

With drainage channels on both sides it permits easy drainage for water and allows air movement between the siding and sheathing to help keep the wall dry.

Green roof drainage mat thickness. Roofs that have potted plants or container gardens are not generally considered green roofs. Drainage mats nominal thickness. Green roof systems of this type are drained by a. Used within schemes where the growing medium is of sufficient depth to negate the need for additional water storage for the vegetation.

The grs gr52 panel size is 24 x 24 x 2 125. Protection drainage and filtration. It is specified in some very low pitched extensive green roofs. In july 2011 the liveroof hybrid green roof system became the first to be fm approved according the fm standard 4477.

It is made of a filtration veil and the polyamide monofilament fibre network layer. Drainage protection filtration layer it is used for lightweight green roofs terraces and has many functions. Sdf mat drainage filtration layer. 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.

Developed by fm approvals llc fm standard 4477 is the approval standard for vegetative roof systems. The gr52 can withstand 0 352 gallons per square foot or 1 4 gallons per panel. Drainage board is a lightweight multi directional drainage to allow for free dispersal of the water to the nearest outlet. Their light weight makes them ideal for retrofit projects on older buildings or any stricture with limits on the total weight load.

Moisture retention and protection mat specifically designed for sloped green roofs. The board is effective with fiber cement wood and foam backed vinyl. Made of non rotting fibers penetration resistant for water and nutrient retention as well as protection layer. It is ideal for drainage and drying behind stucco and.

Because dc14 is made of extruded polystyrene xps it does not absorb moisture and is not a food source for mold. 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. It evaluates green roof performance related to fire foot traffic resistance and water leakage. 17 20 mm.

Systems with drainage mats. Extensive green roofs are less than six inches deep and are typically 2 4 inches in depth.