Horticulture & green roof
Leca Garden 4–10
Washed and dust-free, for growing media and hydroponics.
- Grain size
- 4–10 mm
- Loose bulk density
- 300–380 kg/m³
Applications
Green roofs
The drainage course and part of the growing medium, at the lowest saturated weight available.
What limits any green roof is the slab's capacity when everything is saturated. A gravel drainage course is heavy wet; expanded clay at the same depth weighs a fraction of it.
At the same time the granule's porosity retains part of the rainfall and releases it between waterings — which cuts both irrigation demand and the peak load on urban stormwater drainage.
Recommended grades
Horticulture & green roof
Leca Green Roof 8–16
The green roof drainage layer: light and frost-stable.
- Grain size
- 8–16 mm
- Loose bulk density
- 280–340 kg/m³
Reference projects
2023 Doha, Qatar
Green roof, Doha office complex
Intensive green roof drainage across 9,000 m² under a tight dead-load budget.
Volume supplied 3,200 m³
Get a quotation for your project
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