Can I apply a film to my skylight's glass to decrease heat and light?

We don't recommend adding any store-bought film to the glass of VELUX skylights. And keep in mind that the addition of store-bought film or tint will void the 10-year warranty on your glass. VELUX glass is manufactured with a Low-E coating and injected with Argon gas, and both make our skylights very energy efficient. Additionally, we offer several blinds and sunscreening options that can be added to your skylight to regulate light and heat.