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Delivering durable, efficient below-ground performance

Celcon Blocks: Foundation Blocks

Built for below-ground construction

A simpler foundation solution

Celcon Foundation Blocks provide a durable and efficient aircrete solution for below-ground construction. Resistant to water penetration, freeze/thaw conditions, and sulfate attack, they provide a practical alternative to traditional masonry foundations.

Easy to install, they can be laid below ground without mortar perpends and are available in Standard and High Strength grades to meet different structural requirements.

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Specifications

Widths

275mm - 355mm

Compressive Strength

3.6N/mm² 7.3N/mm²

Thermal Conductivity

0.24W/mK & 0.29W/mK

Density

600 kg/m³ & 730 kg/m³

Foundation Block sizes and specifications

Grade
Thickness
Face Size
Strength
Conductivity
Density
Weight
Standard
275mm
440mm x 215mm
3.6N/mm²
0.24W/mK*
600 kg/m³
20kg
Standard
300mm
440mm x 215mm
3.6N/mm²
0.24W/mK*
600 kg/m³
22kg
Standard
355mm
440mm x 215mm
3.6N/mm²
0.24W/mK*
600 kg/m³
26kg
Standard
300mm
325mm x 215mm
3.6N/mm²
0.24W/mK*
600 kg/m³
16kg
High Strength
275mm
440mm x 215mm
7.3N/mm²
0.29W/mK*
730 kg/m³
27kg
High Strength
300mm
440mm x 215mm
7.3N/mm²
0.29W/mK*
730 kg/m³
29kg
High Strength
355mm
440mm x 215mm
7.3N/mm²
0.29W/mK*
730 kg/m³
35kg
High Strength
300mm
325mm x 215mm
7.3N/mm²
0.29W/mK*
730 kg/m³
16kg

*Please note that the thermal conductivity quoted for use below ground is different to that when used above DPC because they may have higher moisture content. Block weights at typical moisture content when laid.

Why use Foundations blocks?

Discover how H+H aircrete can be used below ground to create strong, thermally efficient foundations. Explore the key benefits and see how the system supports faster, simpler construction.

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Disclaimer

The information on this website is provided for general guidance only and does not reflect current product availability or stock levels. For up-to-date stock information or specific product requirements, please contact our Customer Services or Technical teams.

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