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Product Data

MedO Green Roof Systems

MedO D40 Reservoir/Drainage Board

Radmat D40 is made of high impact recycled polystyrene. It stores up to 23.3 l/m2 of water and will therefore provide a good supply of water for all plants within an intensive or extensive green roof. With a maximum crush resistance (filled) of 625 kN/m2 green roofs can easily be combined with areas of hard landscaping. 

The three-level drainage system with integrated branch drains ensures a high drainage capacity. Radmat D40 is supplied in sheets 40mm deep and is resistant to compression from 280 kN/m2 (unfilled) to 625 kN/m2 (filled). 


As a drainage and water storage board for intensive and extensive green roofs 

With infill as a drainage board under fully bedded paving systems 

With an appropriate infill can also provide a drainage layer under areas accessible to vehicles 

For intensive and extensive green roofs with a pitch of > 0° – 10° 

Description  Value
Length 1.995m
Width 1.003m
m2/board 2m2
Weight/board 3.84kg 
Height 40mm
Filling volume 23.8/m2
Material Recycled polystyrene



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