If the design of the floors in the house provides additional loads on the insulation, it is very important that the material of the insulation itself is characterized by stability of the shape and volume, temperature minimal deformations, durability. These parameters are important for thermal insulation materials, which are used for floating floors, floors in basements, underfloor heating. However, there is no technical possibility of a floating floor in the upper room. Then you can mount the suspended ceiling between the lags with the filling of space with a light, sound -absorbing material.