Smart Stormwater Roofing Contols - The Highest Value Method to Manage Stormwater
Date & Time
Wednesday, September 28, 2022, 2:30 PM - 3:00 PM
Anthony Mayer Joseph Diekfuss Matt Knouse

Our presentation illustrates how with determined vision, cross built-environment discipline expertise and a network of supporting companies and individuals, that an extraordinarily high value method to effectively manage volume stormwater on structures is fueling a paradigm shift for savvy real estate developers. Over the past 20 years, the real estate development economics for site development have significantly evolved. With increasing regulations, labor and especially land costs, common methods of volume stormwater management like retention ponds, bioswales, porous pavements, underground storage, green roofs, etc. have become less effective to meet developer’s ROI requirements. We evaluated many options and a common theme kept occurring: All commonly used volume-based stormwater management systems were a complete build. There were limited efficiencies or interconnectivity to other systems and furthermore, none of these systems were predictable or provided reporting with exact amounts of stormwater managed. We noticed that low-slope roofing comprised a significant percentage of the impervious space in any densely populated community. Multi-family, industrial, institutional, and commercial spaces use this method for waterproofing and are consistently the most regulated types of developments across the 770 combined sewer system (CSS) communities in the USA. To effectively utilize low-slope roofing for volume stormwater management we started by creating a smart control to retain and measure stormwater volume/flow. This was followed up by another smart control to indicate the exact origin of any potential leak and an instantaneous notification of that condition, thus if a leak is identified, the system automatically releases any retained water. Lastly, we needed to vet waterproofing products to meet ponding water requirements for warranty purposes. The thermoplastic waterproofing segment became the obvious choice. The product is designed for ponding water, provides the highest R-value available and melded well with our smart controls. As important, this industry agreed to fully warrant the system with their billions of dollars of assets backing our endeavor. Our “Smart” Blue Roofs utilize our thermoplastic partners membrane systems as our bladder to retain stormwater. For about 40% more than a conventional roof, owners no longer need to compromise the use of their land for ROI generating activities or dig expensive pits below their buildings. Owners pay 60-70% less than they previously paid for stormwater management. Consistent with other CSS cities, if “Smart” Blue Roofs were universally implemented to manage stormwater in New York City, in less than 15 years, everything remaining constant, overflows of raw sewage would no longer occur (20 billion gallons/year on average today). At the end of this presentation, participants will of have the tools of where, when, and how to implement “Smart” Blue Roofs and how they make a difference to drive both ROI and environmental sustainability. To support these tools, they will be provided examples of several successes in large market communities from around the USA.

Location Name
National Harbor 5
Full Address
Gaylord National Resort & Convention Center
201 Waterfront St
Fort Washington, MD 20745
United States