Thermalite Aircrete Hi-Strength 7 Trenchblock Tongue & Groove

Benefits of Thermalite Aircrete Hi-Strength 7 Trenchblock Tongue & Groove

Thermalite aircrete blocks provide a cost-effective solution for below-ground construction. A closed micro-cellular structure, that features tiny pockets of trapped air, gives Thermalite its distinctive features: high thermal and sound insulation, lightness for handling, high compressive strength and fire resistance. Thermalite’s excellent thermal insulation properties make U-value targets easier to achieve and can help reduce the CO2 emissions during a building’s life.

Thermalite Aircrete Hi-Strength 7 Trenchblock Tongue & Groove specifications

Height Length Width Weight *
215mm 440mm 255mm 23.2kg
215mm 440mm 300mm 27.2kg
215mm 440mm 355mm 32.2kg

Key data

Compressive Strength 7.3 N/mm²
Dry Density 730 kg/m³
λ Below ground 0.29 W/m.K
Working Dimensions

Face dimensions (mm) : 440 x 215, 440 x 140**
* Weight : Based on the block gross density + 50Kg/m³ at a typical moisture content of 23% (typical received), moisture equilibrium approximately 3% (protected) and 5% (exposed).
** All 140mm high trenchblocks : are supplied without hand holds and
tongue & grooves - they have flat ends.

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