Aircrete Blocks – Aircrete Solutions for Solid Wall Construction Applications

Celcon blocks are ideal for the construction of solid walls, and the range of blocks available provides the designer with a choice of solutions which will meet the primary functions. With their inherent combination of strength and thermal insulation, Celcon blocks provide construction solutions which are value engineered for the majority of buildings.

Solid Wall of Celcon Blocks

A solid wall of Celcon blocks is commonly used for domestic extensions, where the blocks provide major benefits for the overall construction. As an alternative to the external render finish, the blocks can be clad with timber boarding, or tile hanging on battens.

Construction of Solid External Walls

For the construction of solid external walls, the designer may choose from a range of strengths. In two-storey housing, the Solar range is generally more than adequate. For walls or piers under high vertical loads, or large infill panel walls which are likely to be subjected to high wind loading, higher strength Celcon blocks may be more appropriate.

Celcon Blocks

All Celcon blocks have excellent resistance to water penetration and can easily satisfy the National Building Regulations requirement that walls shall adequately resist the passage of moisture to the inside of the building.


  • Internal and external leaves of cavity walls
  • Separating /party walls
  • Flanking walls
  • Multi-storey

Lintels for Solid External Walls

Celcon blocks can be easily chased on site to accommodate proprietary metal lintels. Some lintel manufacturers can provide alternative details.

Restraint and Connections

Where joists run parallel to the wall, the three joists nearest the wall should be connected to it by metal restraining straps located at maximum 2m centres. Note the diagonal strutting between joists and packing between the wall, this enables restraining straps to act in compression as well as tension. For full details see Approved Document ‘A’ Cl.1.c33 (table 11, Diag 18 lateral support by floors and Diag 19 lateral support at roof level) and BS 5628-1. fig 18-22 (timber floors).

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.


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