Can you play a sound absorbing effect with a grid ceiling?
With a grille ceiling, sealed ceiling (or microporous, such as aluminum microplate, gypsum microplate), to maintain a certain internal space, the deeper the better the internal strength, the air filled with sound-absorbing cotton, Allow, fill about 20 centimeters. Do not fill up. Such as off the micro-porous ceilings, sound-absorbing cotton can be sealed with non-woven (anti-sound-absorbing cotton dust).
Upstairs that is to use fiberglass, this is if it is home improvement, do not choose this, home improvement on the election polyester fiber cotton, the sound-absorbing effect is also good, according to the upstairs that do, polyester fiber sound-absorbing cotton filled 10 cm about there!