Why Blu Roofs

Sustainablu Systems are solutions for sustainable stormwater detention, retention, and drainage methods. The systems are designed to attenuate and manage stormwater on a flat roof - depending on prior, current, and future precipitation parameters.  

How It Works

Sustainablu has a variety of specifically engineered and patented active outlet controls. These controls manage outlet restrictions that regulate the discharge of stormwater to a precise calculated and pre-designed flow rate. This significantly slows down the volume of water leaving the roof.

The Smart System is able to create maximum water storage just hours before a rain event and as the storm passes, water can be held on the roof to avoid combined sewer overflow and flooding. Days or hours after a storm event, the system drains excess water from the roof at a controlled rate or desired volume.

The Sustainablu System can be constructed at either rooftop or podium level. The designed void space between the flat roof waterproofing membrane and hard/soft landscaping finish allows the stormwater to attenuate.

Why Specify A Blu Roof

Development and expansion of towns and cities has seen exponential use of impervious surfaces causing artificially high rates of rainwater runoff. In measures to prevent flooding, planners are restricting the amount of rainwater leaving a site using Sustainablu Systems. This reduces, limits, or eliminates combined sewer overflow. 

All Sustainablu solutions have weight load implications. The project’s structural engineer will need to be engaged with the design process from an early stage.

SustainÅBlu Passive Blu Roof Systems control the rate at which water drains from a rooftop or structure. This is done through non-mechanical means and without any moving parts. It detains water on the surface with a variety of project specific techniques. Passive Systems are typically utilized on existing structures where design options are limited.

SustainÅBlu Active Blu Roof Systems control the rate at which stormwater drains, retains, or detains from rooftops, while also podiums or any ground remote location.

The autonom and smart automated runoff management system provides accurate live data and is equipped with computerized emergency functions. The systems can be combined with other solutions like Green Roofs, Paver Roofs, or Solar Systems.

SustainÅBlu Blu Roof Systems are solutions for urban areas where options for ground-based attenuation systems are limited. This is particularly where construction is being carried out within flood sensitive areas.

SustainÅBlu is the world leader in Blu Roof Systems. Whether it is an Active or Passive System, SustainÅBlu has what you are looking for.


531 S. Water Street                     
Milwaukee, WI 53204