Floor screeds on old timbered ceilings are used to compensate for level difference and sag, and also for improved sound attenuation. However, sealing the joints and then pouring over a liquid screed is not a good solution!
Activating the screed together with the timber beams to create a supporting structure
If the screed - in the ideal case a liquid cement screed - is bonded to the timber beams by means of SFix bolts, the resulting composite structure become as highly effective design. The load take-up is tripled, and the vibration resistance of the timber-beamed ceiling can now be proven easily - thanks to the enormous increase in rigidity, as a rule by a factor of 10. Depending on requirements, footfall sound-deadening matting may now be placed on the timber-concrete substrate, followed by a dry screed, which will serve as support for a floor covering (parquet, tiles, etc.).