While Stocks Last

Thermalite T&G Trench Block 275mm 4N

Item Code: 446510322

£4.09 Ex VAT £4.91 Inc VAT

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Thermalite Trenchblock Tongue and Groove is an alternative to the construction of cavity walls with concrete infill, engineering bricks or heavy aggregate blocks for foundations.


  • Improves thermal performance
  • Can be used in thin joint masonry, saving time and money 
  • Removes the need to mortar perp ends
  • Moisture resistance