Understanding Window Tint Measurements
Window tint darkness is measured by Visible Light Transmission (VLT) — the percentage of light that passes through the film. A lower VLT percentage means darker tint. For example, 5% VLT (often called "limo tint") is very dark, while 70% VLT is nearly clear.
Every state regulates tint levels differently, and most states have separate rules for the windshield, front side windows, rear side windows, and back window. Getting this wrong can result in tickets, failed inspections, and forced removal of the tint.
Texas Window Tinting Laws
Since many of our customers are in Texas, let's start there:
- Windshield: 25% VLT allowed above the AS-1 line (top 5 inches) only
- Front side windows: Must allow 25% or more VLT
- Rear side windows: Any darkness (no restriction)
- Rear window: Any darkness (no restriction)
- Reflectivity: No more than 25% reflective on front and rear side windows
Texas penalties for illegal tint: $20 - $200 fine per violation, plus the cost of removing or replacing the non-compliant tint.
State-by-State Tint Guide (Key States)
Sun Belt States (Popular for Tinting)
| State | Front Side | Rear Side | Back Window |
|---|---|---|---|
| Texas | 25% VLT | Any | Any |
| Florida | 28% VLT | 15% VLT | 15% VLT |
| California | 70% VLT | Any | Any |
| Arizona | 33% VLT | Any | Any |
| Nevada | 35% VLT | Any | Any |
| Georgia | 32% VLT | 32% VLT | 32% VLT |
| Colorado | 27% VLT | 27% VLT | 27% VLT |
California stands out with the strictest front window laws at 70% VLT — effectively allowing almost no tint on front side windows.
Medical Exemptions
Most states offer medical exemptions for drivers with conditions that make them sensitive to sunlight, such as lupus, photosensitivity, or melanoma. Requirements typically include:
- A signed letter from a licensed physician
- Documentation must be carried in the vehicle at all times
- Some states require an annual renewal of the exemption
- Exemptions usually allow darker tint than standard limits but still have maximums
Planning to Travel?
If you drive between states regularly, your tint needs to comply with the laws of every state you drive through — not just your home state. A tint that's legal in Texas (25% VLT front) would be illegal in California (70% VLT front). Keep this in mind before choosing your tint level.
Types of Window Tint Film
- Dyed film ($50 - $150): Most affordable, good for privacy, but fades faster and offers less heat rejection
- Metalized film ($100 - $250): Reflective, great heat rejection, but can interfere with phone/GPS signals
- Carbon film ($150 - $350): No signal interference, excellent UV protection, matte finish, long-lasting
- Ceramic film ($200 - $500+): Top-tier heat rejection, no interference, clearest appearance, lifetime durability
For a full pricing breakdown, check our car window tinting cost guide.
Choosing the Right Tint Level
Beyond legality, consider what you want from your tint:
- Privacy: 5-20% VLT rear windows with legal front windows
- Heat reduction: Ceramic film at any legal VLT rejects more heat than cheap dark film
- UV protection: Even 70% VLT ceramic film blocks 99% of UV rays
- Appearance: 35% VLT gives a clean, subtle look; 20% is noticeably dark
