Manage stormwater runoff without occupying surface-level space
A roof system designed to provide temporary or permanent water storage that gradually releases stored water - typically rainfall - over time.
Manage stormwater runoff without occupying surface-level space
Well-suited for sites at which roofs make up a large fraction of the total
impervious area, and for sites with ground-level space constraints
Typically require no additional sewer connections besides the ones already
provided for the building
Can cost less than other SMPs
Readily coupled with other SMPs, such as Green Roofs
Easy to install if structural and waterproofing requirements are met
Require no excavation
Can provide educational benefits, especially when used at public and/or highly
visible sites such as schools, recreation centers, libraries, etc.
Blu roofs or controlled-flow roof drain systems, are detention and retention stormwater management practices (SMPs) that provide temporary storage and slow release of rainwater on a rooftop. Blu roof systems are an effective practice for controlling runoff from buildings with flat or mildly sloped roof surfaces.
On Smart Blu Roofs, water is detained on the roof surface more effectively. The release of detained and retained stormwater is precisely managed by a Smart Flow Control (SFC) and a Weather App. Smart roof drain valves (Smart Flow Control or SFC) operate entirely autonom, powered by solar/battery, and with emergency release. SFC is in applications around the world and have proven high reliability, fast payback, and low maintenance.