Green Roof Filter Layer

A filter fabric layer on top should separate the aggredrain from the growing media.

Green roof filter layer.

A filter fleece separates the drainage layer from the roof garden substrate in a green roof structure. Considerations in the selection and use of filter sheets include. The 6 slotted triangle shape is used beneath the aggredrain layer and allows for water to flow freely. For a biodiverse green roof the various vegetation options above can be combined to help create different habitats.

An important consideration with filter fabric is the flow rate while preventing media runoff. Green roof solutions has a 3 5 oz filter fabric ff35. This is very important as it provides the level of security needed to ensure safety. It is made of a filtration veil and the polyamide monofilament fibre network layer.

Protection drainage and filtration. Waterproof membrane drainage layer filter layer substrate as well as the planted portion. Filter cloth the filter cloth layer a useful extension to the green roof drainage layer can be easily managed on its own as it works primarily to help remove clogs and excess organic material from the drain. Successfully managing this composite structure is the key to creating a green roof system that performs well over the long term.

A green roof system consists of four layers. The drainage layer is highly useful for those roofs in which the maximum angle is not more than 10 degrees. It prevents small soil particles from filling the drainage layer and so the water buffering function. Enough filter sheet is set down over the roof so that at the vertical edges of the planting beds the sheet will be the same height as the substrate.

Beneath the growing media and above the drainage system the filter fabric keeps the media from clogging up the drainage while allowing water to flow freely. A drainage layer a filter layer a growing medium layer substrate and a vegetation layer. 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. The green roof solutions drainage conduit is a stainless steel channel for use with the aggredrain system.

Of the drainage layer remains intact for longer. A green roof generally possesses a total of five layers that include. Filter layer this layer is a polypropylene geotextile fleece that prevents substrate fines and sediment from being washed in to the water storage or drainage component. The grs ff35 has a high flow rate of 150 gallons per minute per square foot.

Filter sheet a layer of filter sheet will prevent substrate dropping into the drainage layer.