In practice, usually the old wooden ceiling bends under its weight, which creates a strong load on the walls and the foundation of the structure itself. Imagine when 1 kV. m of clay-lime mass 15 cm thick weighs up to 200 kg. Therefore, during the reconstruction of old buildings, the priority task is to reduce the weight of the structure without losing thermal insulation properties.
Many experts in this case recommend filling the space between expanded clay beams, due to its small weight. In this way, we significantly reduce the weight of the structure.
It must be remembered that the overlap should pass air, so before the backfill of expanded clay, it will not be superfluous to put a steam butter. Thus, we will protect ourselves from the accumulation of moisture on our future ceiling.
To fall asleep expanded clay in two stages. First, we fall asleep with a coarse -grained fraction with a layer up to 15 cm, and then cover with improvised material, for example, an old flooring, and fall asleep with a second layer up to 10 cm with small expanded clay. Thanks to this, we provide good sound insulation of the ceiling and level its surface. To complete the work, we perform a dry screed.
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