Thermalite T&G Trench Block 300mm 4N

Item Code: 446510323

£4.49 Ex VAT £5.39 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