Thermalite Trenchblock is a tried and tested, economical alternative to the construction of cavity walls with concrete infill, engineering bricks or heavy aggregate blocks for foundations.
- For use in soils of up to Design Sulfate Class DS 4
- Available with tongue & groove joints & handholds
- Improves thermal performance
- Eliminates the need to mortar perpends
440mm x 215mm
0.15W/m.K (Above DPC), 0.24W/m.K (Below Ground)