440mm x 215mm x 300mm Thermalite T&G Trench Block 3.5N

Product code: B020493

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Foundation blocks

Description

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.

Features:
- For use in soils of up to Design Sulfate Class DS 4
- Available with tongue and groove joints & handholds
- Improves thermal performance
- Eliminates the need to mortar perpends

Applications:
- Foundations

Face Dimension:
440mm x 215mm

Block Thickness:
300mm

Block Weight:
17.5kg

Strength:
3.6N/mm²

Thermal Conductivity:
0.15W/m.K (Above DPC), 0.24W/m.K (Below Ground)

Density:
600kg/m³