Window film is an inexpensive way to create privacy, preserve your belongings, and lower your monthly utility bills. Designed for easy do-it-yourself application, it is a thin, flexible, plastic material that is sold by the roll. It is applied to the inner surfaces of windows, typically using a squeegee, sponge, and razor blade.

To apply it, you typically:

1) Clean the window.

2) Spray on a soapy water solution.

3) Cut the film to approximate size and peel the backing from it.

4) Apply the film and scoot it around until it is positioned properly.

5) Squeegee the water out from under the film, working from the center to the edges.

6) Trim the edges of the film with a razor blade.

The types of window film available include privacy film, glare-reducing film, and insulating film.

Why we like it: • Stylish and affordable way to provide privacy • Easy to apply without adhesives • Can be removed without leaving residue

Privacy film allows light through but can’t be looked through from outside, either because it is opaque or because it reflects outward. Opaque varieties look like etched glass, rice paper, or have leaf patterns. The varieties that reflect light are more mirror-like and transparent. Both will block ultraviolet (UV) rays that can fade floors and furnishings.

Privacy window film is occasionally used indoors, too. It can add an extra measure of privacy on interior windows, shower doors, transom windows, and the like.

Glare-reducing film, as the name implies, cuts down on reflected light that causes glare.

Insulating film reflects sunlight (heat) and UV rays in the summer, which reduces your home’s heat gain. In doing so, it helps to substantially lower your energy bills during summer months. In addition, it helps reflect radiant heat back in toward your home’s interior during cold winter months.

Also see Window Film Can Prevent Fading Floors & Furnishings.