One of the common materials is insulating cotton wool, which not only suppresses noise, but also has thermal insulation properties. Each soundproofing material has its pros and cons of. When choosing a material for isolation of sound, you need to look at the weight, the degree of protection, as is attached to the ceiling, environmental friendliness, etc. D. The material is determined by the material. Such materials can be used not only to isolate the ceiling, but also the walls, the floor of the apartment. Now in the stores of building materials a wide selection of different noise-sound-insulating materials with various properties and prices is presented.