It is a common question, because the windshield is a large panel and a lot of heat comes through it. Windshield film is treated differently from side and rear glass under state vehicle rules, so what is permitted, and where on the glass, needs checking against the current regulations before anything is applied. Since solar performance is not tied to darkness, a light nano-ceramic film such as Photon can still be a worthwhile option here. Discuss it with your installer, who can confirm what is appropriate for your car.
Did you know Kepler also supplies residential and commercial security window films? View our security window film options