Type III: Savannah
Two-layer system
Fast Facts
CSI Specification
Type III:
Savannah Specifications
Details
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Profile
Savannah two-layer systems employ a lightweight growth medium over a granular drainage layer, with a root-permeable separation fabric maintaining the layer integrity. Replicating natural systems, Savannah roofs promote strong plant growth by draining and distributing water efficiently and concentrating root mass in a stable temperature and moisture zone.
To reduce heat stress in semi-arid climates, Roofscapes, Inc. introduces a permeable thermal shield above the drainage media. Highly efficient base capillary irrigation may also be used.
Wind
Erosion Stabilization System
- Lightweight Growth/Drainage Medium
- Root-permeable Separation Fabric
- Thermal Shield (for semi-arid climates)
- Lightweight Granular Drainage Media
- Protection/Water Distribution Fabric (for unirrigated systems)
- Capillary Fabric (for irrigated systems)
- Root Barrier Membrane (when required)
- Waterproofing
Typical Depth: 4 - 6 inches
Max. Saturation Weight: 27 - 40 lbs/square foot
Typical Plant Families
- Sedums & Herbs
- Sedums & Meadow Grasses
- Sedums & Meadow Perennials
Optional
Irrigation: Base drip with capillary fabric
Recommended for
- Diverse plant communities
- Use with patios and paths
- Many retrofit applications
- Minimal maintenance
- Roof pitches to 2:12
Special Applications: Available in modular form
Data Sheet
Typical Applications
- Chicago City Hall
- Premier Automotive North American HQ
- Heinz 57 Center
- Peggy Notabaert Nature Museum
- Boston's World Trade Center - Podium Buildings
- Sanitation District No. 1 Office
- Private Residence, Medina, WA
- Kansas City Central Library
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