Quick answer: VLT (Visible Light Transmission) is the percentage of visible light that passes through a window film. A 5% VLT film is very dark, blocking 95% of light; a 70% VLT film is nearly clear. Lower VLT means darker tint, more privacy, and typically more heat rejection — but also stricter legal limits by state and province.
Window tint VLT explained in plain English
Quick answer: VLT means visible light transmission. It tells you how much visible light passes through window tint. A lower VLT percentage looks darker because less visible light gets through; a higher VLT percentage looks lighter because more visible light gets through.
Do not choose window tint by darkness alone. The right tint depends on VLT, local laws, window position, night visibility, glare goals, privacy goals, and film construction. Heat comfort also depends on film performance, not only the VLT number.
- Low VLT: darker appearance, more privacy, and more legal/visibility considerations.
- High VLT: lighter appearance, more visible light, and often easier daily visibility.
- Front side windows: usually require more careful legal and night-driving checks.
- Rear windows: often allow more privacy-focused choices, depending on local rules.
Always check your state, province, or country window tint law before installation. Veloro shopping content is guidance, not legal advice. If you are unsure, order samples and compare shade, reflectivity, interior visibility, and exterior appearance in real daylight before choosing a larger roll.
Common VLT percentages at a glance
| VLT range | How it usually looks | Best-fit buying note |
|---|---|---|
| 70%–50% | Light tint; more daylight passes through. | Often chosen when visibility and a subtle look matter more than privacy. |
| 35%–20% | Medium to dark appearance. | Common privacy-focused range, but front-window legality varies by location. |
| 15%–5% | Very dark appearance from outside. | Check local law and night visibility carefully before ordering a full roll. |
VLT, IR rejection, and TSER are different numbers
VLT measures visible light, IR rejection describes infrared heat rejection, and TSER means total solar energy rejected. A darker-looking film is not automatically the highest heat-rejection film, so compare construction and sample appearance before buying.
Window tint VLT quick chart: 70%, 50%, 35%, 20%, and 5%
Quick answer: Higher VLT looks lighter and lets in more visible light; lower VLT looks darker and gives more privacy, but increases legal and night-visibility risk. VLT is not the same as heat rejection, so compare IR rejection, TSER, film construction, and real samples before buying.
| VLT | How it usually feels | Best-fit shopping note | Extra caution |
|---|---|---|---|
| 70% | Very light tint; mostly clear, factory-like look with mild visible glare reduction. | Good starting point when daily visibility, windshield/front-window caution, or subtle appearance matters most. | Check local law; some areas regulate windshield and front side windows very strictly. |
| 50% | Light tint with a noticeable but not aggressive shade change. | Useful when you want a cleaner look without making the cabin feel very dark from inside. | Compare samples in daylight and at dusk because interior color changes perceived darkness. |
| 35% | Medium tint; darker from outside while usually staying more daily-drivable than very dark films. | Common choice for balanced style, privacy, and visibility goals. | Front-window legality varies widely, so verify rules before ordering a full roll. |
| 20% | Dark tint with stronger privacy and a more dramatic exterior appearance. | Better suited for privacy-focused rear windows or builds where dark styling is the main goal. | Night visibility becomes more important; test visibility before committing. |
| 5% | Very dark tint, often called limo-style darkness. | Only consider when privacy and appearance outweigh most visibility concerns, and only where legal. | Highest caution: law, night driving, parking, reversing, and side visibility all need careful review. |
Before ordering a full roll, compare a window tint sample in daylight, shade, and evening conditions. The same VLT can look different depending on glass color, interior color, and film construction.
Helpful tint paths: Window Tint Film · Ceramic Tint vs Carbon Tint · Does Darker Tint Mean a Cooler Car? · Film Samples Guide · Complete Sample Book
Does lower VLT mean darker tint?
Yes. A lower VLT percentage means less visible light passes through the film, so the tint usually looks darker. A higher VLT percentage lets more visible light through and usually looks lighter.
Is darker tint always cooler?
No. Darker tint may reduce visible light, but cabin heat comfort depends on film construction and heat/infrared performance, not just darkness or VLT percentage.