I think 24 hours, if any? I do know that occasionally, there will be some air bubbles trapped underneath the film, but they actually diffuse through the film. At first, I thought I had a few bubbles, but after being the the sun for a couple days, they disappeared. I have had windshield film applied, picked up the car, and then embarked on a week-long road trip, with zero issues!Looks great. After the application/install how long do you have to wait before driving?