Thermalite Trenchblock

Aircrete concrete block, foundation block

Trenchblock

‘Strength 4.0 N/mm2
Thermal conductivity 0.15 W/mK
Density 600 kg/m3

Thermalite Trenchblock is a tried and tested, economical alternative to the construction of cavity walls with concrete infill for foundations.
• For use in soils of up to Design Sulfate Class DS 4
• Available with tongue and groove joints and handholds
• Improves thermal performance

Thicknesses: 255 - 355mm’
 

Trenchblock Tongue and Groove

Strength 4.0 N/mm2
Thermal conductivity 0.15 W/mK
0.23 W/mK (below ground)
Density 600 kg/m3

Thicknesses: 255 - 355mm

The tongue and groove joints enable blocks to slot easily together in one simple process. By joining the blocks together in this way, the perp-ends do not need to be mortared, providing a much quicker method of construction.’
 

Hi-Strengh Trenchblock

Strength 7.0 N/mm2
Thermal conductivity 0.19 W/mK
Density 730 kg/m3

Thermalite Hi-Strength Trenchblock provides all the benefits of Trenchblock, together with the 7.0 N/mm2 compressive strength of Thermalite Hi-Strength.
• For use in soils of up to Design Sulfate Class DS 4
• Available with tongue and groove joints and handholds

Thicknesses: 255 - 355mm

Environmental metrics

Manufacture details

Downloads

Product brochure

Environmental guide

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