Summary: Learn how to lay a concrete floor and how to mix and lay screed.
A concrete floor is usually laid during renovation work to replace a rotting timber floor. Before laying a concrete floor, you must consult your local Building Control Department as changing a floor can affect the ventilation in other parts of the building and it is possible that insulation will also be required. If infill material of more than 600mm is required a new suspended floor must be fitted instead, as the settlement of the infill material may result in damage to the new concrete floor.
Before concreting you need to infill the area with layers of different materials.
A screed (layer of mortar) should be laid over the concrete to produce a smooth surface. The floor screed mix should be:
3 parts sharp sand1 part cement
Before laying the screed, dampen the concrete floor using water and a bonding agent mixed in equal parts.
Author: C J Mills Google+
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