The boards are molded to allow for installation with the reservoirs on the upper face for high water retention.
Green roof drainage board.
Grs drainage products typically fit into a green roof system above the grs root barrier and below the grs filter fabric.
Used within schemes where the growing medium is of sufficient depth to negate the need for additional water storage for the vegetation.
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Diadrain 25h flow delay retention board.
Intensive green roofs balconies and terraces.
Plastic drainage layers may be rigid open mesh structures that allow unrestricted drainage of water or they may have a cup style egg carton design that enables water to be stored at the base of the profile see image below.
Depending on regional precipitation rates and the water retention goals for your specific project green roof solutions has a full range of products to meet your needs.
Suitable for use on inverted roofs.
Our green roof partners app diadem supply a wide range of drainage boards to suit even the most challenging planting schemes.
We also offer grufekit tiles in sedum wildflower and sedum mix and brown wildflower this system is great for diy and for existing.
Drainage and storage board fkd 25.
The urbanscape eps drainage system is a drainage and reservoir board made out of eps and specifically designed for green roofs.
Diadrain 25h dp drainage board perforated on both sides.
Paralon membranes will retain their root repellent characteristics for the lifespan of the roof system.
Our own uk green roofing system is a blend of high quality substrate soil drainage board and sedum or wildflower blankets.
Buy green roof materials from substrate and sedum to drainage board as well as our modular grufekit tiles systems.
On modern lightweight green roofs plastic drainage sheets or boards are the preferred drainage materials.
Drainage boards fkd are available in various designs and are selected according to which drainage target is to be achieved either by delaying the flow retaining water or targeted drainage of roof areas.
Diadrain 25hf m flame resistant flow delay retention board.