Description : There is a room with a Ytong wall, this should be soundproofed so that noises come in from the street.
Last Answer : If it is not possible to insulate the outside, it remains to have glass wool and drywall inside. This is a well-proven solution, the disadvantage is that it takes 10-15 cm to be effective, and it ... alt_text = '' description = ''] https:///wp-content/uploads/2017/03/hangszigetelés.jpg [/ img]