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My aftermarket headlights that I just purchased have had problems with condensation for some time now. All the rubber covers around where the bulbs are place are sealed tight and installed correctly. I did notice the small "vents" which were covered with what looks like some sort of venting patch. Its just a piece of fabric and seems to not be the tightest seal. What would be the best way to re-patch these vents with something more water-tight?
For reference I have a 2001 Impala.
There are two designs vented and non-vented. In the vented design the vents actually help prevent the condensation. Make sure they are clear, you may even have to add additional holes to create more venting.
I have a chevy with the same fabric. I suspect it is Gore-Tex/PFTE material. It allows condensation to escape. But does not let in water drops. A breathable membrane seems ideal. This is a guess. I am buying a sample of Gore-Tex and will cut and glue around the hole in my headlights to hopefully stop fogging. Gore-Tex fabric's properties of breathing does not last forever. My chevy is 12 years old.
