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300mm Thermalite Aircrete 3.6N Trenchblock T&G

300mm Thermalite Aircrete 3.6N Trenchblock T&G

by Thermalite

£7.40
Prices updated 15 Mar 2026

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Product Description

Thermalite Aircrete Trenchblock T&G with a 300mm width, 440mm length, and 215mm height. These aerated concrete blocks are engineered specifically for below-ground construction, featuring a closed micro-cellular structure that traps air to deliver high thermal insulation and structural reliability. The tongue and groove profile facilitates quick, accurate alignment during the construction of trench foundations. These blocks provide a practical, lightweight solution for sub-structure applications, offering high compressive strength without the excessive weight associated with traditional dense concrete. By improving the overall thermal performance of the building envelope from the foundation upwards, they assist in meeting modern building regulation energy targets and help reduce operational CO2 emissions. This specification applies to the block with a 300mm width.

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