Thermalite Trenchblock Tongue and Groove is an alternative to the construction of cavity walls with concrete infill, engineering bricks or heavy aggregate blocks for foundations. It is available as Hi-Strength Trenchblock (with compressive strength of 7.3N/mm2) and with tongue and groove joints and handholds for easy handling.
for use to Achieve a 150mm cavity.
- Improves thermal performance
- Available in standard or with tongue and groove joints and handholds
- Can be used in thin joint masonry, saving time and money
- Removes the need to mortar perp ends
- Moisture resistance
Compressive Strength: 3.6 N/mm²
λ Design above dpc: 0.15 W/m.K
λ Below ground: 0.24 W/m.K
Dry Density: 600 kg/m³
Face dimensions (mm): 440 x 215