No estimate half, but still able to play a sound effect
No, if the amendment of the surface is not good, it will affect the paving of floor and tile. You can select one of these, and you'better use sound insulation felt for it also is waterproof.
However, the best solution to sound insulation for the floor is to use external thermal insulation board as the bottom material, and it can reduce a quarter to one-third of the sound. Glass wool felts also have good sound insulation effect. As to whether it can lower half of the noise, no one can be certain.
Pour concrete with the thickness of 4-6 cm to the shock absorption pad. The floor treatment is mainly for solid conduction, and the surroundings also need to be isolated by shock pad. Shock absorption pad and concrete floor can ensure that the newly-poured floor is not hard-wired with the original building.
