Division C - Accepted Materials
Group - Vegetated Roof Systems
NLSM StormCap
by Next Level Stormwater Management
| System/Material Acceptance and Product Details
The information published in the RCABC Roofing Practices Manual and offered below does NOT represent a complete set of the manufacturer’s data or specifications, nor is this system and its various materials recommended or endorsed by the Guarantor. The preparation of a detailed specification is the responsibility of the Design Authority.
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- Vegetated Roof System Manufacturer
- https://www.nlsm.ca/
- Accepted for the RoofStar Guarantee Program
- October 25, 2024
- Accepted for application in
- Vegetated Roof Systems
- Acceptance Criteria
- Refer to the RGC Standard for Vegetated Roofs
- System Summary
- StormCap™ is designed by Next Level Stormwater Management as a superior water retaining pre-vegetated system absorbing 67 l/m2, a high water retention-to-weight ratio. Engineered growing media is a proprietary mix of lightweight minerals and organic components that encourages microbial soil health, healthier plants, reduces irrigation, and reduces the potential need for fertilizers. The Needled Mineral Hydro Blanket is a non-petroleum based, formaldehyde-free product that holds up to 90% of its volume in water, making it very effective in capturing and storing rainwater without exerting excessive loading. Most components come in rolls for easy transport and install (adapted from the manufacturer's literature).
- Manufacturer Online Resource
- StormCap System
- System Depth
- 114 mm (4-1/2") to 264 mm (10-3/8")
- Growing Media Depth
- 70 mm (2-3/4") to 170 mm (6-11/16")
- Vegetation Profile
- Moss-Sedum
- Suitable climate zones
- All BC zones, subject to manufacturer's approval
- System Components
- NL718 Sedum Blanket (Click here for the Technical Data Sheet PDF)
- NL600 Growing Medium (Click here for the Technical Data Sheet PDF)
- NL501 NM Hydro Blanket (varies from 2.5 to 7.5 cm) (Click here for the Technical Data Sheet PDF)
- NL400 Filter Fabric (Click here for the Technical Data Sheet PDF)
- NL300 Drainage Mat (Click here for the Technical Data Sheet PDF)
- NL120 Root Barrier (Click here for the Technical Data Sheet PDF)
- NL200 Edging & Accessories (Click here for the Technical Data Sheet PDF)
- NL210 Drain Box & Accessories
- NL220 Penetration Box
- *Conditions and Limitations
- Note that system thickness is dependent upon the selection of components, which is determined (in part) by design parameters, including hydrological requirements. Consult with the vegetated roof system manufacturer for options and saturated system weight.
- Also note that vegetation coverage under the RoofStar Vegetated Roof Guarantee applies only to extensive systems planted with mats or trays - see Part 3 of Division A for more about coverage.
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