SpongeBase™
SpongeBase™
Transforms Impervious Areas & Provides Source Control On-Site
Key features
Helps achieve water balance & quantity control targets
- Hidden, non-vegetated system provides source control, on-site
- Uses the void space between impervious surfaces & roofing system
- Highly absorbent, it stores up to 6 times its own weight in water
- Fire resistant, the hydro blanket distributes rainwater laterally
- Can be customized to 75mm to meet water balance target
- Ideal for rooftop terraces, exposed balconies, walkways & more
- Reduces flooding, burden on sewer infrastructure & CSOs
- Purple-Roof Compliant
- Choice of two: SpongeBase™ Retention or SpongeBase™ Detention
SpongeBase™ Retention
SpongeBase™ Retention
- Retains up to 75 mm of rainfall to meet water balance target
- Diverts runoff & reduces burden on the municipal sewer infrastructure
- Dries effectively to recharge for water storage during next storm event
- Cools building to save energy & mitigate the urban heat island
Properties
| Product Code | Product Name | Thickness (mm) | Dry Weight (kg/m2) | Saturated Weight (kg/m2) | Water Retention (l/m2) |
|---|---|---|---|---|---|
| NL501 | NM Hydro Blanket | 25.80 | 3.90 | 28.80 | 24.90 |
| NL310 | Drainage Board | 11.43 | 0.80 | 1.72 | 0.92 |
| NL120 | Root Barrier | 0.50 | 0.46 | 0.46 | 0.00 |
| Total | 37.73 | 5.16 | 30.98 | 25.82 |
| Product Code | Product Name | Thickness (inch) | Dry Weight (psf) | Saturated Weight (psf) | Water Retention (inch) |
|---|---|---|---|---|---|
| NL501 | NM Hydro Blanket | 1.02 | 0.80 | 5.90 | 0.98 |
| NL310 | Drainage Board | 0.16 | 0.35 | 0.04 | 0.02 |
| NL120 | Root Barrier | 0.02 | 0.09 | 0.09 | 0.00 |
| Total | 1.20 | 1.25 | 6.03 | 1.00 |
SpongeBase™ Detention
SpongeBase™ Detention
- Retains up to 75 mm of rainfall to meet water balance target
- Detains up to 100 mm of rainfall for up to 24 hours
- Delays & reduces peak flow
- Meets quantity control target
- Optional reservoir layer can further increase detention capacity
- Can be combined with StormCap™+Detention green roof system
- Meets stringent water balance & quantity control targets
Properties
| Product Code | Product Name | Thickness (mm) | Dry Weight (kg/m2) | Saturated Weight (kg/m2) | Water Retention (l/m2) |
|---|---|---|---|---|---|
| NL501 | NM Hydro Blanket | 25.80 | 3.90 | 28.80 | 24.90 |
| NL351 | Reservoir Cell | 12.70 | 0.78 | 0.78 | 0.00 |
| NL350 | Detention Mat | 5.00 | 0.40 | 0.80 | 0.40 |
| NL120 | Root Barrier | 0.50 | 0.46 | 0.46 | 0.00 |
| Total | 44.00 | 5.54 | 30.84 | 25.30 |
| Product Code | Product Name | Thickness (inch) | Dry Weight (psf) | Saturated Weight (psf) | Water Retention (inch) |
|---|---|---|---|---|---|
| NL501 | NM Hydro Blanket | 1.02 | 0.80 | 5.90 | 0.98 |
| NL351 | Reservoir Cell | 0.50 | 0.16 | 0.16 | 0.00 |
| NL350 | Detention Mat | 0.20 | 0.08 | 0.16 | 0.02 |
| NL120 | Root Barrier | 0.02 | 0.09 | 0.09 | 0.00 |
| Total | 1.73 | 1.14 | 6.32 | 1.00 |
Innovative
Hidden and invisible, SpongeBase™ provides source control by managing rainfall exactly where it lands; on rooftop terraces, exposed balconies, walkways, and vegetation-free zones. The systems enable impervious rooftop surfaces to manage rainwater without sacrificing accessibility and aesthetics.
Nature-Based Solution
The core of SpongeBase™ is a lightweight, fire resistant, highly absorbent needled mineral hydro blanket that evaporates stored water, returning it to the atmosphere via the natural hydrological cycle.
Featured Projects
Technical Document Downloads
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In-Person Presentations or Live Webinars
Engineering Green Roofs for CoV’s Rainwater Management Plan
Green roofs play a key role in the City of Vancouver’s (CoV) new simplified rainwater management (RWM) requirements for new Part 3 buildings that took effect on Jan 1. We will learn how to design green roofs to help meet CoV’s retention/detention requirements and when upgrading to a blue-green roof can increase ROI.
Engineering Green Roof Systems to Optimize SWM 2.0
2.0 is a deep dive into the latest stormwater retention and detention technologies. Learn to use modeling to meet water balance and quantity control targets through initial abstraction and irrigation water reuse. Recognize opportunities and limitations. Case study demonstrates performance and cost savings.
Strategies to Meet Policy & Design Goals in Toronto
Check off multiple requirements set by the Toronto Green Standard (TGS) & Wet Weather Flow Management Guidelines (WWFMG). Success requires collaboration between architect, landscape architect & engineers, as well as understanding components, their functions & selection criterion to achieve specific goals.
NutsN’Bolts: A-Z of Essential Tips to Achieve Success
This three part series navigates through the complete green roof process; from recognizing opportunities, to planning, to material selection and system design with emphasis on stormwater management, to specifications and drawings, to clarity in construction documents and, finally green roof aftercare and maintenance for long term success. (3 hours over 3 weeks)
Cost Saving Strategies to Meet Toronto’s Green Roof Policy
Love ’em or hate ’em green roofs are everywhere and can check off multiple requirements set out by the Toronto Green Standard (TGS) and the Wet Weather Flow Management Guidelines (WWFMG). This webinar explores functions and selection criterion, and the collaboration between architect, landscape architect and engineer to achieve specific design goals.
Wind Design for Modular Vegetated Roof Assemblies
Webinar about the CSA A123.24: Standard Test Method for the Wind Resistance of Modular Vegetated Roof Assembly (VRA) reviews the two key test components that measure wind uplift and wind flow resistances. Videos & case studies help demonstrate how VRAs behave at different wind pressures and wind speeds.