Our Expanded Clay Product Range
Explore EXPA Materials' range of expanded clay aggregates. Available in various sizes to suit diverse applications in construction, landscaping, horticulture and more.
EXPA SAND
Ultra-fine lightweight sand for mortars & screeds. Reduces weight while improving thermal and acoustic performance.
EXPA 0/3
Fine expanded clay with high resistance and good workability. Ideal for strong lightweight screeds, mortars & insulation concrete blocks.
EXPA 3/8
A strong, versatile lightweight aggregate for substrates, green roofs, drainage and concrete based products.
EXPA 8/16
Coarse, ultra-light aggregate that significantly reduces structural loads. Suitable for drainage fills, substrates and lightweight screeds for foundations.
EXPA 16/32
Large, lightweight granules developed exclusively for first-stage drainage layers in landscaping, infrastructure and large-scale drainage projects.
EXPA BROKEN
Crushed angular aggregate combining low weight with excellent stability & strength. Its rough surface provides strong mechanical interlocking and high hook resistance. Ideal for infrastructure, drainage & concrete blocks.
Technical Specifications
| Product | Thermal conductivity λ (W/mK) | PH | Reaction to fire |
|---|---|---|---|
| EXPA SAND - 0/1 mm | 0.09 < λ < 0.121 | neutral | A1 (non-combustible) |
| EXPA 0/3 - 0/3 mm | 0.09 < λ < 0.121 | neutral | A1 (non-combustible) |
| EXPA 3/8 - 3/8 mm | 0.09 < λ < 0.120,1 | neutral | A1 (non-combustible) |
| EXPA 8/16 - 8/16 mm | 0.09 < λ < 0.120,08 | neutral | A1 (non-combustible) |
| EXPA 16/32 - 16/32 mm | neutral | A1 (non-combustible) | |
| EXPA BROKEN - 4/10 mm | neutral | A1 (non-combustible) |
