TSER, IRR, VLT — what those tint spec sheet numbers really mean and how to compare ceramic films honestly.
Every ceramic tint manufacturer slaps big numbers on their spec sheet. Here's what they actually mean.
The percentage of visible light passing through. 35% VLT = 35% light gets in, 65% blocked. Lower = darker.
The headline number. Combines visible light, IR, and UV blocking into one figure. Premium ceramic hits 50–65% TSER. Anything claiming 80%+ is marketing fluff — physics doesn't allow it on auto glass.
The number you actually feel. IR is the heat. A film with 90%+ IRR at peak wavelengths feels dramatically cooler than dyed film at the same shade.
Should always be 99%+ on any modern film, ceramic or not. UV is what fades your interior and damages skin.
Ask for TSER and IRR at 950nm. If a shop only quotes "heat rejection %", they're hiding behind a vague metric. Real ceramic films publish full spectral data.
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