Aircrete Flooring Systems - Technical Data for Aircrete Flooring Systems

The thermal performance of the completed floor depends on the ratio of the floor’s exposed perimeter length (P) to area (A). Using the Celcon flooring system offers a simple solution that meets both structural and thermal requirements, giving a U-value of 0.25W/m²K to meet the Elemental Method:

• For a P/A of 0.6 (typical of a detached house) this floor with aircrete foundations and without any other floor insulation will achieve the requirements.
• For a P/A of 0.45 (typical of a semi-detached house) this floor without edge or any other insulation will achieve the requirements.

Screeds

Celcon flooring systems will accommodate both traditional screeds and levelling screeds; other types of finishes can also be used.

Loadings and Deflection of Aircrete Flooring

The imposed load capacity of floor elements is 5.0 kN/m².

Total long-term deflections are limited to span/250. This should normally ensure that the part of deflection occurring after construction of finishes and partitions will be limited to span/350.

Under Floor Ventilation

As with other pre-cast flooring systems, Celcon flooring systems at ground floor require an under floor ventilation space of not less than 250mm.

Dealing with Services

Elements have a zone below the top surface into which services may be chased or cut. 600mm wide elements can accommodate local cut-outs of approximately 150mm square. Contact H+H Celcon Technical Services Department for specific project details.

This information has been sourced, reviewed and adapted from materials provided by H + H Celcon.

For more information on this source, please visit H + H Celcon.