Ceramic vs. dyed vs. metallic window film

Dyed film

A layer of dye absorbs some solar energy. It's the least expensive, it darkens the glass, and it reduces glare. It does relatively little for heat compared to the other types, and in Florida sun the dye breaks down over time, turning purple and eventually bubbling. Fine for privacy on a small window; not a long-term heat solution.

Metallic film

A thin metal layer reflects solar energy back out. Good heat rejection, durable, and doesn't fade. The downsides are a reflective or mirrored look from outside, which some HOAs restrict, and possible interference with cell, GPS and radio signals inside. Common on commercial buildings where the mirrored look is acceptable.

Ceramic film

Ceramic particles absorb and reject heat without metal, so there's no mirrored look and no signal interference. It comes in nearly clear to moderately tinted, blocks nearly all UV, doesn't fade, and handles heat well. It costs more than dyed film. For a Florida home where you want the view, the light and less heat, ceramic is the usual answer.

Which film for which glass

Insulated (double-pane) glass and some tinted or coated glass can be stressed by films that absorb a lot of heat. That rules out certain dark dyed and some ceramic films on certain units. Impact glass has its own considerations. The film choice depends on the glass, which is why we check the glass type before recommending anything and bring samples so you can see the options on your own windows.