Floors

Thermalite® Floorblock, together with Floor Endblocks and Coursing Slips, forms a complete insulated flooring system for use with any proprietary inverted T-beam structure.

Applications
Thermalite® Floorblock is suitable for both domestic projects and, with floor beams at closer centres, may also be used in non-domestic applications. For further information, please contact Hanson’s Product Services
Department.

Floors built with Thermalite® Floorblock will meet the structural requirements of the Building Regulations, provided that the floor loadspans are calculated in accordance with BS 8110: Part 1. Floorblocks must also be specified and installed in accordance with Agrément Certificate No 91/2723.

Installation
After the Floorblocks have been positioned, before any trafficking or loading is allowed, and before any floor finish is commenced, it is recommended that the floor be grouted with a 1:4 cement/sharp sand composition.

Screeding
The floor screed should be 1:3 cement/sand in accordance with BS 8204: Part 1. The minimum depth recommended for domestic ground floors is 50mm.

For non-domestic applications, a minimum 50mm thick concrete screed with a minimum compressive strength of 20N/mm² should be specified. The manufacturers of the floor beams should be consulted with regard to beam spacing and the possible need for reinforcement to the screed.

The cement/sand screed can be laid directly on the grouted floor and, unless it is particularly moisture sensitive, a damp-proof membrane need not be laid over the grouted pre-cast floor.

Floating layers
Floating layers, such as timber boarding on battens, including insulation, may be laid over the grouted Floorblocks.