Beam and Block Floors with Aircrete

A beam and block floor is a suspended flooring system formed from pre-stressed concrete beams with aircrete blocks laid between them. Suitable for ground and intermediate floors, the system provides a robust alternative to timber flooring for homes and commercial buildings.

Pre-stressed concrete T-beams are supported by perimeter and internal loadbearing walls, with aircrete blocks laid between them to form the floor. The system can be used for ground and intermediate floors and can typically achieve longer spans than timber joists, potentially reducing the need for internal supports.

Beam and block flooring requires minimal groundwork when used for suspended ground floors and installation is generally less dependent on weather conditions. Once installed, the floor can provide an early working platform for follow-on trades, helping construction progress efficiently. 

Insulation is typically positioned above the beam and block floor beneath the screed, with the required specification determined by the thermal performance of the floor construction.

Celcon Block Standard Grade 440 × 215 × 100mm is suitable for use as infill between precast concrete beams. For a standard floor, beams are typically spaced at 440mm centres, while closer spacing can accommodate higher loads or longer spans.

Suspended ground floors require appropriate ventilation beneath the floor, with additional measures potentially required in areas affected by radon. Refer to current Building Regulations and H+H technical guidance when specifying the complete floor construction.

Explore H+H aircrete solutions for walls, floors and other applications throughout the building.