Window film has a lifespan, and Florida's heat and UV shorten it, especially for lower-grade dyed films. If you bought a used car or had it tinted years ago, the film may be past its best.
Purple tint is the most common sign. The dye in cheaper films breaks down in sunlight and shifts from black to purple. By then it has also lost much of its ability to block heat.
Bubbles and peeling edges mean the adhesive is failing. Beyond looking bad, bubbles on the back glass or side windows can distort your view, which is a safety issue when you're changing lanes or backing up.
Removing old tint is more than peeling it off. The adhesive often stays on the glass, and on the back window it has to be removed carefully to avoid damaging the defroster lines. We strip the old film, clean the glass completely, and then install fresh film.
If you're replacing it anyway, it's a good moment to consider ceramic film. It holds its color, rejects more heat, and will look the same years from now.