Fill & screed grades
Leca Fill 3–10
The standard grade for roof screeds and void filling.
- Grain size
- 3–10 mm
- Loose bulk density
- 380–450 kg/m³
Applications
Thermal insulation
A mineral, non-combustible insulant with no performance loss over the building's life.
Organic insulants lose performance with time and moisture, and add fire load in a blaze. Expanded clay does neither: fully mineral, Euroclass A1 reaction to fire, stable to about 1,150 °C.
Typical uses: filling cavity walls, insulating ground-bearing floors, packing around buried heating pipes, and lining industrial kilns and flues.
Recommended grades
Structural grades
Leca Structure 10–20
The lightest structural fraction, for where dead load governs the design.
- Grain size
- 10–20 mm
- Loose bulk density
- 260–320 kg/m³
Reference projects
2024 Basra, Iraq
Lightweight block plant, Basra
Annual supply of fine aggregate to a non-loadbearing lightweight block line.
Volume supplied 26,000 m³
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