Is Adding Soundproofing Cotton to a Car Effective?

[JoannaLynn]

Adding soundproofing cotton to a car has some effect, but it is not significant enough to impact the noise level inside the vehicle. This is because there are multiple sources of noise in a car, and installing soundproofing cotton alone is unlikely to make a major improvement. More relevant information is as follows: 1. Soundproofing cotton does not provide much help in reducing cabin noise. Car soundproofing is a systematic project, and engine soundproofing cotton is just a small part of it. Simply adding a piece of soundproofing cotton to improve cabin noise is clearly insufficient. 2. There are mainly two types of soundproofing cotton: one is custom-made for specific car models, mostly using plastic flocking and high-temperature-resistant flame-retardant cotton; the other is freely cuttable aluminum foil soundproofing cotton, made of aluminum foil and flame-retardant foam material.