What Window Tint Percentage Should You Choose?

NW Window Tinting answers a common customer question below.

Direct answer

Choose a tint percentage based on the finished window, not the film label alone. The right shade balances Washington law, daytime and nighttime visibility, privacy, appearance, and heat rejection. Because factory glass already reduces light, the glass and film must be considered together.

What does a tint percentage mean?

The percentage describes visible light transmission, often shortened to VLT. A higher number allows more visible light through and looks lighter. A lower number allows less light through and looks darker.

The finished VLT is not always the same as the number printed on the film box. Factory glass has its own light-transmission level. Once film is added, the combination can meter darker than the film rating by itself.

What do common percentages generally look like?

• 50% is light and subtle. It can reduce glare and add solar performance without creating a heavily tinted appearance.
• 35% provides a noticeable tint while usually preserving strong outward visibility.
• 20% creates substantial privacy and is often visually close to factory privacy glass on many SUVs and trucks.
• 5% is extremely dark and can significantly reduce nighttime visibility. It is not appropriate or legal for many windows and vehicles.

These descriptions are general. Glass color, interior color, weather, and lighting change how tint looks.

Does darker tint reject more heat?

Not necessarily. Shade and solar performance are different measurements. A lighter premium ceramic film can outperform a darker basic film for heat rejection. Customers who care about comfort should compare the exact film specifications, not choose only by darkness.

How does Washington law affect the choice?

Washington generally requires at least 24% net visible light transmission on regulated automotive windows, with different treatment for certain rear windows and vehicle classifications. Reflectivity and windshield placement are also regulated. The installer should inspect and meter the vehicle before recommending a shade.

What should you decide before the appointment?

Think about when you drive, how much privacy you want, whether other people use the vehicle, and how important nighttime visibility is. Tell the shop whether your priority is appearance, legal compliance, heat control, glare reduction, or matching factory privacy glass. That gives the installer enough information to recommend an appropriate film and shade.

A sample board is useful, but viewing film through actual vehicle glass provides a more realistic comparison.

Want to compare shades on your vehicle? Review our automotive tint services or book online.