False ceilings


Bricks, timber struts or fills

Ceilings between two floors are made of a heavy and a light material. If the spaces between the ceiling beams are filled with solid clay, this creates both good heat storage and good room sound insulation. In addition, the wood protection function of the clay takes effect here, which permanently removes moisture from the wood and thus protects it from decay. A soft insulation material for the footfall sound insulation lies on top. For the heavy construction, earth bricks, earth wraps or a clay fill are suitable. Depending on whether the ceiling joists are completely or only partially visible from below, the clay fill is either built into the sub-floor between the joists or over the entire area on formwork on the joists. A full-surface use, however, requires a honeycomb-shaped support structure made of plastic so that the bed does not shift and is slapped, for example under the walkways.

The use of earth bricks has the advantage that they are already dry and therefore only introduce little moisture into the building. The earth bricks are also on a blind floor or formwork.

The classic ceiling structure is created with prefabricated and pre-dried timber struts. In the old half-timbered house, these earth-wraps are wrapped in a mixture of straw and clay between the ceiling joists, either inserted into a groove in the joist or resting on squared timbers. They are plastered with clay from below and covered with clay from above. Installation is easy and quick.

When constructing the false ceiling, one should consider whether trickle protection is necessary and appropriate: while a fully plastered ceiling does not tend to trickle, this can be the case at the contact points between plaster and beams.

To the clay fills