VLT (Visible Light Transmission) determines how much light passes through your window film. Learn what different percentages mean for comfort and legality.
Window Film Tinting: Understanding VLT Percentages
VLT (Visible Light Transmission) is the most important specification for window film. It measures the percentage of visible light that passes through the film.
VLT Scale Explained
| VLT % | Appearance | Use Case |
|---|---|---|
| 70% | Nearly clear | Windshield visor strip |
| 50% | Light tint | Front side windows (most states) |
| 35% | Medium tint | Rear side windows |
| 20% | Dark tint | Rear window (private vehicles) |
| 5% | Very dark (limo) | Commercial vehicles only in most areas |
Legal Considerations
Window tint laws vary by region. Common restrictions:
- Windshield — Usually limited to top 4-6 inches or 70%+ VLT
- Front side windows — Typically 35-70% VLT minimum
- Rear windows — Often unrestricted for private vehicles
Always check local regulations before installation.
Choosing the Right VLT
Consider these factors:
- Climate — Hotter climates benefit from lower VLT (more heat rejection)
- Privacy needs — Lower VLT provides more privacy
- Driving habits — Night drivers may prefer higher VLT for visibility
- Local laws — Must comply with regional regulations
Frequently Asked Questions
What does VLT mean for window tint?
VLT (Visible Light Transmission) is the percentage of light that passes through. Lower VLT means darker tint. 70% VLT allows 70% of light through.
What VLT is legal?
Laws vary by region. Common limits: 70% windshield, 35-50% front sides, 20-35% rear. Always check local regulations.
Does darker tint mean better heat rejection?
No. Ceramic films can reject 90%+ infrared even at high VLT. Heat rejection depends on IR technology, not darkness.
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