TerraExt - BC Mix
TerraExt – BC Mix
Cool and Resilient

Key features
Pre-vegetated system designed for climate change preparedness
- Lightweight growing medium (GM)
- GM adds thermal mass & moderates heat flow through the roof
- Saves energy – cools building in summer & warms in winter
- Increases plant resilience to sharp temperature change
- Ideal for harsh/extreme climates, climate change preparedness
- GM depth is customizable to project requirements
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 | 80.00 | 51.20 | 96.80 | 45.60 |
NL400 | Filter Fabric | 0.55 | 0.10 | 0.40 | 0.30 |
NL300 | Drainage Mat | 17.00 | 0.34 | 0.34 | 0.00 |
NL120 | Root Barrier | 0.50 | 0.46 | 0.46 | 0.00 |
Total | 118.05 | 69.30 | 127.70 | 58.40 |
Product Code | Product Name | Thickness (inch) | Dry Weight (psf) | Saturated Weight (psf) | Water Retention (inch) |
---|---|---|---|---|---|
NL718 | Sedum Blanket | 0.79 | 3.52 | 6.08 | 0.49 |
NL600 | Growing Medium | 3.15 | 10.49 | 19.83 | 1.80 |
NL400 | Filter Fabric | 0.02 | 0.02 | 0.08 | 0.01 |
NL300 | Drainage Mat | 0.67 | 0.07 | 0.07 | 0.00 |
NL120 | Root Barrier | 0.02 | 0.09 | 0.09 | 0.00 |
Total | 4.65 | 14.20 | 26.16 | 2.30 |
Keep Cool

Keep Cool
- Reduces heat gain through the roof, keeps building cool in the summer
- Reduces urban heat island, contributes to cooling of the community
- Just enough GM to up thermal performance without excessive load
Enhanced Performance

Enhanced Performance
- Improves thermal performance, saves energy for space conditioning
- Increased water retention & filtration in engineered GM
- Customizable to meet project-specific performance requirements
Climate Resilience

Climate Resilience
- Prepared for extreme/intense temperatures due to climate change
- Cools the building through evapotranspiration during heat waves
- Protects plant roots from sudden/extreme temperature changes
The Bioberm™ Add-On
A cost-effective option to enhance biodiversity on the TerraExt green roof system, maximize value, achieve LEED or meet the Toronto Green Standard Native/Biodiverse requirements. BioBerm™ is a multi-strategy design technique approved by the Design Guidelines for Biodiverse Green Roofs.
Unique Design
Sloped, rounded, pyramid-shaped, TerraExt 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.
Technical Document Downloads

"*" indicates required fields
Similar Green Roof Systems
See All SystemsIn-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.