What to Do When the Car Floor Soundproofing Cotton Gets Wet?
3 Answers
Soundproofing cotton getting wet is definitely due to incomplete sealing of the car body. Here is the relevant information: 1. Inspection Methods: Check if the sealing strips are aged, cracked, or incomplete, leading to poor sealing and water ingress; whether the waterproof membrane inside the rear door trim panel is damaged, and recall if any repairs or modifications have been done that might have affected the waterproof membrane; check if the drainage holes on both sides of the sunroof are blocked. If blocked, rainwater cannot drain through the pipes, causing the water level to rise continuously until it overflows along the headliner and sealing strips, eventually reaching the floor soundproofing cotton. 2. Solutions: Call the 4S shop for a comprehensive vehicle inspection and to seal any leaks.
My car also got water inside last year, and the soundproofing felt was all wet and uncomfortable. I immediately used old clothes to soak up the water, then turned the fan and air conditioner to maximum and blew them at it for a whole day. It must be completely dried, otherwise it can easily grow mold, not to mention the strange smell in the car and damage to the metal body. The source of the water could be rain leaking through the door gaps or the air conditioner leaking. I checked the door and window seals and found cracks, so I patched them up with rubber tape. If the area is large or the leak can't be found, it's best to take it to a repair shop for professional handling—they can use instruments to detect the leak and also check if the chassis drainage holes are clogged. When washing the car, always pay attention to water traces on the ground. Prevention is always better than fixing it afterward. Don’t delay, as it can affect driving safety and even corrode wiring, leading to serious consequences.
Don't panic if sound insulation cotton gets wet. I've fixed it myself several times. First, park the car in a sunny spot and open the windows for ventilation. Use a vacuum to remove most of the moisture, then blot repeatedly with dry cloth or newspaper. For heavy residual moisture, buy a portable dehumidifier or use an electric fan to blow continuously for several hours until completely dry. Check the leak source—it might be torn carpet or clogged door drain holes; unclogging them usually solves the issue. DIY repairs save money and hassle, but handle carefully to avoid tearing the insulation, which would require costly replacement. Prevent future issues by watching for door-splash during rain, installing waterproof floor mats as protective layers, and regularly inspecting seals. These habits significantly extend vehicle lifespan and prevent odor problems.
