The reason I witter on about rainex is because I have rainexed the side windows of my little Abarth which sits out on my drive at night. In the morning the side windows are misted up on the outside. A wipe with a finger shows that these are micro drops and just the finger will force them to bead together and run off. Or, of course, as soon as I drive off the wind will do it.
Could it be something similar, maybe one of the coatings you've applied is causing same..?
Nick

Last edited by nick w; 20/12/17 09:19 AM.