What kind of glue should be used to seal a leaking car sunroof?
3 Answers
It is not recommended to use glue for a leaking car sunroof. Instead, you can use silicone sealant or visit a 4S shop for professional assistance. Below is more relevant information: 1. Causes of leakage: (1) Sunroof: The reasons for sunroof leakage include issues with the sunroof drainage outlet, commonly caused by blockages from dust, branches, or leaves, which prevent proper drainage and lead to water seepage. Another common issue is aging rubber seals. (2) Trunk: Water may enter the trunk through the tail light area due to aging trunk seals, which can be resolved by replacing the seals. 2. Methods to handle water ingress in the cabin: (1) Remove all floor mats and dry them thoroughly. (2) Ensure proper ventilation inside the cabin. (3) Visit a 4S shop to have the wiring system rechecked.
As an experienced driver who has owned multiple cars, sealing a sunroof leak with glue usually isn't the right solution. Most leaks stem from aged or deformed weatherstripping or clogged drainage holes blocked by leaves and debris. Temporarily applying household adhesive can actually worsen the problem since it can't withstand high temperatures and vibrations, eventually cracking and peeling off. I recommend first inspecting the sunroof's drainage channels and using compressed air or a soft tube to clear any blockages. If the weatherstrip is damaged, visit a professional repair shop for OEM replacement parts – that's the most reliable fix. Untreated leaks can soak into floor carpets causing mildew odors or even electrical shorts. Parking away from trees helps prevent debris buildup. If you must use adhesive, automotive-grade silicone sealant works better, but it's only a temporary measure. For long-term safety, addressing the root cause is essential.
Although I haven't been driving for long, I'm quite attentive to car maintenance. Hearing about sunroof leaks, I wanted to find a simple solution. After talking to several mechanics, I learned that leaks might be due to worn seals or clogged drainage pipes. Using ordinary glue for sealing isn't durable and could even damage the sunroof rails. Automotive-grade high-elasticity silicone, like the commonly available RTV silicone sealant, is more reliable, but the surface must be cleaned and dried before application. However, DIY repairs are risky—if the application is uneven or the sealant isn't durable, leaks can return after rain, as I've experienced. A simpler approach is to regularly clear debris around the sunroof or spend a bit to have a professional handle it, ensuring long-term peace of mind.
