Window Tint Levels Explained: Your Guide to the Perfect Window Film


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There is no shortage of options for commercial and residential window tint to match the unique needs of each client — but sorting through the options solo can quickly become overwhelming.

When determining what level of window tint is right for your space, you'll want to consider your possible needs for the space. Are you wanting to reduce glare? Increase privacy? Cool down the space without cranking the AC more? All of these factors can play a part in which tint solution is right for you.

What Is Visible Light Transmission?

Visible Light Transmission (VLT) measures how much natural light is able to pass through the window film. A higher VLT percentage (50–70%) means more natural light passes through the film, allowing for a lighter space. A lower VLT percentage (20–35%) means less natural light passes through, resulting in a darker interior space.

Tints come in a variety of VLT options — if you are worried about your space becoming too dark, we recommend going with a medium to high VLT tint option.

Tint options can vary in what level of VLT they offer for each product, so it's important to review and discuss the options available with a professional to ensure you're selecting the right product for your space!

Afternoon sun streaming through untinted sliding glass doors onto a hardwood floor
What Factors Should I Consider Before Choosing a Window Tint Option?

Some factors you'll want to consider before selecting a window film for your space are:

  • What direction do the windows face? West- and south-facing windows get hit with more direct sunlight, while north-facing glass gets more indirect sunlight.
  • How are you using the space? For office spaces or homes with a lot of screens, you may want to consider a glare-reducing option.
  • Is your space getting too warm? Window film options with ceramic can help bring down the temperature of the room without making the room too dark.
  • Do you have privacy or security needs? A darker level of window tint, or reflective options, can help add additional privacy to the space. Options like security films can also add an additional layer of protection.
What Level of Window Tint Is Best for South- and West-Facing Windows?

We recommend considering a medium to dark or reflective window film option to help combat the direct sun that south- and west-facing windows get hit with.

That being said, putting a darker window film on north-facing windows can quickly make the room dark and gloomy, so you'll want to go with a lighter 50–70% VLT tint option for these spaces.

What Level of Window Tint Is Best for Glare Reduction?

Squinting at your computer screen or TV while the sun beats on it is fun for no one — and we've all been there.

Technology isn't going anywhere, but introducing medium to dark level window film to your area can help combat glare from natural light entering the space, reducing eyestrain for the people in the space.

Side-by-side comparison of sunlight on a hardwood floor without tint and with 3M Night Vision 35 window film
What Level of Window Tint Is Best for Heat and Energy Savings?

While the level of tint can have some impact on heat and energy savings, what you really want to find here is a window film with ceramic.

The tint level can help shade the space, but the ceramic technology found in some window films can better help combat infrared heat.

This means even a lighter window film closer to 50–70% VLT paired with ceramic can still effectively cool down the room — making for a more comfortable, well-lit space while you save money on energy costs.

What Window Tint Option Is Best to Meet My Privacy and Security Needs?

A darker window film (20% VLT) or reflective film can be a great option to add an additional layer of privacy.

It is important to note, though, that even darker window films can still allow people outside to see in through the window when the interior lighting is brighter than the outside lighting.

Security film is another great film that adds additional security to a space, with many schools, churches, and office spaces turning to this option. The window film is designed to slow down and deter intruders, and the glass spiderwebs in place when struck rather than allowing the glass pieces to fall on the ground and create an additional hazard.

How to Choose a Window Film Option

Use this quick guide to match your goals to a window film type:

Your Goal Light Tint
(50–70% VLT)
Medium–Dark Tint
(20–35% VLT)
Ceramic* Security Film
Glare Reduction Recommended
Privacy Recommended
Security Recommended
Heat / Energy Savings Recommended
South- / West-Facing Windows Recommended
North-Facing Windows Recommended
Maximize Natural Light Recommended

*Ceramic options are available in both light and dark tint.

Which Window Film Is the Right Fit for Me?

Selecting window film for your space doesn't have to be confusing — we're here to help!

Our knowledgeable customer service team will work directly with you to find the perfect window film option to match your needs. Our Nebraska-based team will provide you with a free quote and coordinate a certified install team to come to your location and complete the installation — mess- and hassle-free!

Reach out to us today and ask how we can help transform your space!

FAQs
  • How does Visible Light Transmission affect window film?
    Visible Light Transmission (VLT) measures how much natural light can pass through the window film. A higher VLT percentage results in a lighter window film, and a lower VLT percentage results in a darker window film.
  • Do I need a darker window film for heat and energy savings?
    You don't necessarily have to go with a darker window film. A ceramic window film option will do a great job of helping with infrared heat, even with a lighter level of tint.
  • What windows take the most direct sunlight?
    South- and west-facing windows get hit with more direct sunlight than north-facing windows. This means finding a darker tint option for west- and south-facing windows, and a lighter tint for north-facing windows to prevent that space from getting too dark.
  • What factors impact which window film option is best for me?
    You'll want to consider your needs for the space, like glare reduction, privacy and security needs, and how the space is used. All of these will impact which option works best for you and your space.

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