Green Roof Drainage Board

Diadrain 25hf m flame resistant flow delay retention board.

Green roof drainage board. Drainage board is an important part of roof greening system and plays a role in storing and draining water. And because the assembly incorporates hydrotech s. Green roof solutions gr32 and gr52 drainage panels come in 24 x 24 interlocking squares constructed of 100 recycled high density polypropylene hdpp. Used within schemes where the growing medium is of sufficient depth to negate the need for additional water storage for the vegetation.

Protection and drainage board fkd 60bu. Diadrain 25h dp drainage board perforated on both sides. Hydrotech s garden roof assembly allows the design professional to transform virtually any flat or sloped roof into a landscaped environment. Diadrain 25h flow delay retention board.

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. The urbanscape eps drainage system is a drainage and reservoir board made out of eps and specifically designed for green roofs. The gr52 can withstand 0 352 gallons per square foot or 1 4 gallons per panel. Three thicknesses of drainage plates are available to meet the drainage and water storage requirements of almost any green roof.

The boards are molded to allow for installation with the reservoirs on the upper face for high water retention. The grs gr52 panel size is 24 x 24 x 2 125. On modern lightweight green roofs plastic drainage sheets or boards are the preferred drainage materials. 25mm 1 thickness is standard for thin extensive roofs 40mm 1 5 is recommended for enhanced water storage and drainage on thicker extensive roofs and semi intensive roofs and 60mm 2 5 is available for maximum water retention on intensive roofs.

Drainage board drainage board is a lightweight multi directional drainage to allow for free dispersal of the water to the nearest outlet. Designed as a lightweight low profile system the garden roof assembly can be safely installed on roof and plaza decks not engineered to handle the heavy load requirements of a traditional green roof.