Thermalite Aircrete Trenchblock Tongue and Groove

Benefits of Thermalite Aircrete Trenchblock Tongue and Groove

Thermalite aircrete blocks provide a cost-effective solution for wall, floor and below-ground constructions. 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 and moisture 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 Trenchblock Tongue and Groove specifications

Height Length Width Dry Weight
215mm 440mm 255mm 14.9kg
215mm 440mm 275mm 16.1kg
215mm 440mm 300mm 17.5kg
215mm 440mm 355mm 20.8kg

Key data

Compressive Strength 3.6 N/mm²
λ Below ground 0.24 W/m.K
λ Design above dpc 0.15 W/m.K
Dry Density 600 kg/m³
Working Dimensions

Face dimensions (mm) : 440 x 215

Dimensions and Weights

Block thicknesses and weights at equilibrium density (for 440 x 215mm)


Please send us your enquiry and we will contact you as soon as possible to discuss your project or requirements in greater detail.

Thermalite Aircrete Trenchblock Tongue and Groove

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