OPTIGRUN BLUE ROOF - Roof solutions with defined water retention

A Blue Roof is a flat roof designed to allow controlled attenuation of rainfall during an intense or storm event as part of a Sustainable Urban Drainage Systems Policy (SuDS) policy. A Blue Roof can be created at roof level or on a podium and will be designed to store water temporarily and release it from the building at a controlled and managed rate, usually over a period of 12 -24 hours after the rainfall event. The build-up will normally consist of a storage or void board working (rather than a drainage board) with adjustable or controlled outlets with a green roof surface or alternatively paving or pebble finish.

RETENTION ROOF MEANDER FKM 30

• System solutions with defined water retention
  
• High level of reduction of water discharge during high intensity rainfall whilst retaining good drainage (even for large roof areas)
  
• Peak discharge
  
• Discharge coefficient Cs (according to FLL): 0.01 - 0.17 at 2° roof pitch
  
• Water storage and discharge delay.
  
• Suitable for blue roofs
  
• For green and gravel roofs.

RETENTION ROOF MEANDER FKM 60

• System solutions with defined water retention
  
• High level of reduction of water discharge during high intensity rainfall whilst retaining good drainage (even for large roof areas)
  
• Peak discharge
  
• Discharge coefficient Cs (according to FLL): 0.01 - 0.17 at 2° roof pitch
  
• Water storage and discharge delay.
  
• Suitable for blue roofs
  
• For green and gravel roofs
  
• Meander FKM 60 prevents accumulation of water in cases of ponding in depths of up to 40 mm.
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The RETENTION ROOF FLOW CONTROL SOLUTION for extensive and semi-intensive Green Roofs is a cost-effective and efficient product for rainwater retention and outflow delay

RETENTION ROOF FLOW CONTROL EXTENSIVE AND SEMI-INTENSIVE

• For extensive green roofs
  
• Optigrun Water Retention Box WRB, including Flow Control system
  
• Additional storage volume of approximately 75 l/m² in Water Retention Box WRB 85i. Maximum storage volume of 140 l/m² in Water Retention Box WRB 150
  
• Very low discharge through individual Flow Control system setting
  
• Discharge yield, also less than 1 l/s adjustable
  
• Low weight due to cavity type construction of the Water Retention Box WRB
  
• Increased evaporation performance due to integrated capillary system
  
• Rainfall runoff model with the RWS 4.0 rainwater simulation program.

RETENTION ROOF FLOW CONTROL INTENSIVE

• For intensive green roofs
  
• Optigrun Water Retention Box WRB, including Flow Control system
  
• Additional storage volume of approximately 75 l/m² in Water Retention Box WRB 85i. Maximum storage volume of 140 l/m² in Water Retention Box WRB 150
  
• Very low discharge through individual Flow Control system setting
  
• Discharge yield, also less than 1 l/s adjustable
  
• Low weight due to cavity type construction of the Water Retention Box WRB
  
• Increased evaporation performance due to integrated capillary system
  
• Rainfall runoff model with the RWS 4.0 rainwater simulation program.