Blue Green Roof through Friction
StormCap® Detain 3°
StormCap® Detain 3°
Retain and Detain
Key features
Retention & Detention
- Maximum stormwater management potential
- Retains: Water is stored in Hydro Blanket & growing medium
- Detains: Runoff is slowed down through friction at drainage level
- Works efficiently on low-sloped roofs; No need for control flow drains
- Customizable layers temporarily store up to 100 mm (4″) of runoff
- Ideal for infill developments, projects with high water table, or challenging stormwater requirements
- Wind tested to CSA A123.24: Standard Test Method for the Wind Resistance of Modular Vegetated Roof Assembly (VRA)
- RCABC RoofStar Guaranteed Green Roof System
Properties
| Product Code | Product Name | Thickness (mm) | Dry Weight (kg/m2) | Saturated Weight (kg/m2) | Water Retention (l/m2) |
|---|---|---|---|---|---|
| NL718 | Sedum Blanket | 20.00 | 17.20 | 29.70 | 12.50 |
| NL600 | Growing Medium | 50.00 | 40.50 | 70.00 | 29.50 |
| 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 | 114.00 | 63.24 | 130.54 | 67.30 |
| Product Code | Product Name | Thickness (inch) | Dry Weight (lb/f2) | Saturated Weight ((lb/f2)) | Water Retention (inch) |
|---|---|---|---|---|---|
| NL718 | Sedum Blanket | 0.79 | 3.52 | 6.08 | 0.49 |
| NL600 | Growing Medium | 1.97 | 8.30 | 14.34 | 1.16 |
| 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 |
| 4.49 | 12.96 | 26.74 | 2.65 |
Stormwater Retention
Stormwater Retention
- Water is stored on the roof & does not reach the storm sewer
- Source control reduces the burden on the city’s storm sewers
- Retained water reduces plant stress & irrigation needs
Stormwater Detention
Stormwater Detention
- Detention reduces & delays peak flow, which helps prevent flash floods
- Unlike blue roofs, friction detention works efficiently on low-sloped roofs
- Detention is reliable & works well with back-to-back storms
Climate Resilience
Climate Resilience
- Futureproof – manages intense/frequent rainfalls due to climate change
- High water storage to reduce plant stress between rainfall events
- Improves water storage & thermal performance of the building
Works on Sloped Roofs
StormCap® Detain 3° easily adapts and conforms to various roof designs. The sedum blanket and premium base layers are fully customizable and can be easily cut to fit any shape and design.
BioBerm® & Biodiversity
StormCap+Detention® and the Bioberm® add-on feature seamlessly integrate for topographic variation and enhanced biodiversity. The flexible sedum mat drapes over varying depths of engineered growing medium creating an undulating roof scape with custom plants.
Technical Document Downloads
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