The common window tint failures, what causes each one, and how to tell a curing issue from a defect that needs the panel replaced.
Bubbles are the most common tint complaint and the most misunderstood, because three very different things get called bubbles.
Soft, irregular pockets that appear in the first days and shrink a little each day. This is mounting solution evaporating through the film. Leave them alone. They clear in days in summer and up to two weeks in winter.
A small, round, hard-edged bump with a speck visible at the center. That is dust, a fiber or a hair trapped under the film. It will not go away. It is an install defect and we replace the panel under warranty.
Large bubbles or blisters that show up months or years after install, often on the rear window or on cars that bake in the sun. The adhesive has let go. This is the classic cheap-film failure. On our film it is a warranty replacement. On someone else's film it is a removal and new install.
Purple tint is dye failure. Low-grade dyed films use dyes that are not stabilized against UV. The sun breaks down the dye over a few summers, and because the dyes do not all fade at the same rate, the film shifts purple. Once it goes, the film has also lost most of its ability to block heat and glare.
There is no fix other than removal. The good news is that it is the easiest failure to avoid: carbon-stabilized film, which is what we install as standard, is warrantied for life against color change. If a shop cannot tell you what their film is warrantied against, that is your answer.
Usually the window was rolled down before the film cured, and the weatherstrip dragged the edge. Sometimes it can be reset if caught early. If not, the panel is replaced.
Either the film was cut short and never fully bonded at the corner, or something has been picking at it, like a seat belt buckle or a phone mount. Install defects are covered. Mechanical damage is not, but it is usually a cheap single-panel replacement.
Adhesive failure across the whole panel, the same root cause as blister bubbles. Removal and new film.
Scratches in the film come from the inside: a razor used to scrape ice or stickers, an abrasive pad, cargo rubbing the glass, a dog. Film has a hard coat but it is not glass. Scratches are not a defect and not covered, but a single panel can be replaced affordably.
A rear window done in two or three strips, a light gap along the edge of a door window, or film that stops short of the corner are install shortcuts. They are not going to get worse, but they are not going to get better either, and they are the sign of a shop that did not heat-shrink the glass or did not use a cut pattern.
We do not leave the shop that way. If you see any of it on a Pro Tint install, bring it back and we redo the panel. If you see it on tint from somewhere else and want it fixed, removal and new film is the only real fix.
Almost certainly not. Small water pockets in the first two weeks are the mounting solution curing out. If a bubble has a hard edge and has not changed after two weeks, bring it in; that one is a defect and is covered.
No. The dye has broken down. The only fix is removal and new film. Purple film has also lost most of its heat rejection, so it is not doing its job anyway.
The defroster was turned on before the film cured. The heat along the grid lines pushed the solution into streaks. Sometimes it settles; if not, the panel gets replaced under warranty.
Yes, if it is film or adhesive failure. Peeling caused by a razor blade, a scrub pad or something rubbing the glass is not. The technician can usually tell which it is at a glance.