Thermalite Aircrete Trenchblock Tongue and Groove 355mm 3.6N

Thermalite Aircrete Trenchblock with tongue and groove joints offers superior thermal performance for cavity wall construction. Its closed micro-cellular structure delivers exceptional compressive strength whilst remaining lightweight and easy to handle. The 355mm blocks with 3.6N rating provide excellent thermal and sound insulation, fire resistance, and moisture protection—helping you meet U-Value targets and reduce building carbon emissions. Tongue and groove joints ensure precise alignment and faster installation, making this an economical choice for foundations and structural applications where performance and efficiency matter.