- Invest a couple of bucks in a squeegee. It will make the application process go smoother (yes, the pun is intended!). Sometimes, these window film kits will come with a squeegee.
- Clean the window before applying the window film.
- Be careful about what you use to clean the window. Often, ammonia-based cleaners will adversely affect the window film.
When shopping for window film, make sure it is heat control window film. Otherwise, you may end up with a decorative window film that does nothing to help your heat gain/loss.