Window Tint

Does Window Tint Keep Heat Out


Does Window Tint Keep Heat Out: To understand how window tint keeps heat out, we’ll dive into the science behind it. Window tint is typically made of multiple layers, including a thin film with special properties that selectively filter light and heat. We’ll explore how this film interacts with sunlight to reduce heat penetration. Sunlight contains various types of energy, including visible light and infrared (IR) radiation. Window tint is designed to absorb or reflect a significant portion of the sun’s IR radiation, which carries heat. We’ll examine how this process helps maintain cooler interiors.

Visible Light Transmission (VLT) is a measure of how much visible light passes through the tint. We’ll discuss how the VLT percentage impacts the heat-rejecting properties of window tint and why darker tints tend to be more effective at blocking heat. Beyond comfort, window tinting can contribute to energy efficiency in homes and buildings. We’ll explore how reduced heat gain from window tint can lead to lower cooling costs and a smaller carbon footprint.

Window tint is a popular choice for car owners seeking relief from the scorching heat of the sun. We’ll discuss how automotive window tint can significantly reduce cabin temperatures, improve driving comfort, and protect vehicle interiors. Window tinting is also widely employed in residential and commercial settings. We’ll explore how it can enhance comfort, reduce glare, and provide privacy while keeping interiors cooler. Window tinting regulations vary by location, with different limits on darkness and reflectivity. 

Does Window Tint Keep Heat Out

Does window tint actually reduce heat?

Car window tint blocks both ultraviolet and infrared light. Both are responsible for the excess heat inside your car during the hot months. By blocking these rays, car tint makes your car cooler. With car window tint, you no longer need to wait for the car tint to cool off so you can drive off.

Solar Heat Absorption: Window tint is designed to absorb solar energy, particularly the infrared (IR) radiation from the sun. IR radiation is responsible for carrying heat, and by absorbing it, the window tint prevents this heat from entering the interior.

Solar Heat Reflection: In addition to absorption, window tint can also reflect a portion of the solar heat away from the window. Reflective window films are particularly effective in this regard, as they bounce a significant amount of sunlight, along with its heat, back toward the exterior.

Visible Light Transmission (VLT): The VLT percentage of window tint determines how much visible light is allowed to pass through the film. Tints with lower VLT percentages (darker tints) reduce the amount of visible light and heat that enters the interior, keeping it cooler.

UV Radiation Blockage: Window tint typically includes UV-blocking properties, which are essential for reducing heat and protecting against the harmful effects of ultraviolet (UV) radiation. UV rays can cause heat buildup and can also fade and damage interior materials.

How much heat does tint keep out?

The average sunshade on a vehicle without tint was only able to cool the interior air temperature by about 2 degrees Celsius. A car with tinted windows was able to reduce the ambient temperature in both the front and rear of the vehicle. In fact, the tint was able to cool interior air by up to 8 degrees Celsius.

VLT Percentage: Darker window tints with lower VLT percentages are generally more effective at reducing heat because they allow less visible light to pass through. This means that a 5% VLT tint is darker and provides more heat reduction than a 50% VLT tint.

Infrared (IR) Reduction: Window tints are designed to block a significant portion of infrared (IR) radiation, which carries heat. Tints with IR-blocking properties are particularly effective at reducing heat transfer.

Solar Reflectivity: Some window tints have reflective properties that bounce a portion of the sun’s heat away from the window, further reducing heat gain.

UV Protection: Tints often provide protection against ultraviolet (UV) radiation, which can contribute to heat buildup. Blocking UV rays not only reduces heat but also helps protect interior materials from fading and damage.

What is the best window tint to block heat?

If you are looking for a budget-friendly option, dyed films will be the most affordable choice. If you are wanting maximum heat reduction and UV ray protection, though, metalized films or carbon films are your best bet.

VLT Percentage: Generally, darker tints with lower Visible Light Transmission (VLT) percentages are more effective at blocking heat because they allow less visible light to pass through. Tints with VLT percentages of 5% to 20% are considered dark and can provide significant heat reduction.

Infrared (IR) Reduction: Look for window tints that specifically mention their IR-blocking properties. IR radiation carries heat, so tints that block a significant portion of IR radiation are effective at reducing heat transfer.

Solar Reflectivity: Tints with reflective properties can bounce a portion of the sun’s heat away from the window, further reducing heat gain. However, keep in mind that highly reflective tints may not be permitted by local regulations.

What are the disadvantages of tinted windows?

Reduced Visibility – While tint reduces sun glare, drivers may have visibility issues, particularly at night. There are also potential visibility issues with/of other drivers. Stylish – Tinted windows just look upscale. Legality – The level of darkness (measured by VLT) allowed fluctuates by state and region.

Reduced Visibility at Night: Dark window tints, especially those with a low Visible Light Transmission (VLT) percentage, can significantly reduce visibility at night. This can make it challenging to see road signs, pedestrians, and other vehicles, potentially increasing the risk of accidents.

Legality and Compliance: Window tint regulations vary by location, and using tints that are too dark or reflective may result in fines or legal consequences. It’s crucial to ensure that your window tint complies with local laws.

Interference with Electronic Devices: Certain types of window tints, particularly metallic or metallized tints, can interfere with electronic devices such as GPS, cell phone signals, and radio reception. This interference can be frustrating and inconvenient.

Does 70% tint block heat?

A 70% tint on your windshield can help you to reduce the glare and temperature in your vehicle.

Heat Reduction: A 70% tint will provide a limited reduction in heat compared to darker tints. It can help make the interior of a vehicle or building somewhat cooler by reducing the amount of direct sunlight and solar energy that enters. However, its heat-reduction capabilities are less pronounced than those of darker tints.

Solar Heat Absorption: Darker tints with lower VLT percentages are more effective at absorbing and blocking solar heat, particularly infrared (IR) radiation. A 70% tint will allow more IR radiation to pass through, contributing to a less significant reduction in heat.

Energy Efficiency: While a 70% tint can contribute to improved energy efficiency by reducing heat gain, especially in sunny conditions, it is less efficient in this regard compared to darker tints.

Does 50% tint reduce heat?

A 50% tint is a great option if you don’t want complete darkness on your windows. It’ll only block half the light coming into your vehicle, but it still blocks out UV rays and heat. Plus, it’ll still reduce eye strain and glare, which makes for safer driving.

Moderate Heat Reduction: A 50% tint will provide a moderate reduction in heat compared to having no tint at all. It can help make the interior of a vehicle or building somewhat cooler by reducing the amount of direct sunlight and solar energy that enters.

Solar Heat Absorption: Darker tints with lower VLT percentages are more effective at absorbing and blocking solar heat, especially infrared (IR) radiation. A 50% tint allows more IR radiation to pass through, which means it offers less heat reduction than darker tints.

Energy Efficiency: While a 50% tint can contribute to improved energy efficiency by reducing heat gain, its effectiveness in this regard is limited compared to darker tints.

Visibility and Aesthetics: A 50% tint provides a good balance between heat reduction and visibility. It allows a reasonable amount of light into the interior, which can be important for maintaining good visibility, both for driving and for interior spaces in buildings. It also offers a subtle tinted appearance without being overly dark.

How long can tint last?

around five years

Standard window tint films will last around five years and are relatively affordable. High-quality tints consisting of polyester, metal, or ceramic will cost more but last significantly longer. Avoid cheap window tints as they’ll need replacing every one to two years.

Quality of the Tint Film: The quality of the tint film itself is a significant factor. High-quality tint films, such as those from reputable manufacturers, tend to be more durable and long-lasting. They are less likely to fade, peel, or deteriorate over time.

Professional Installation: Proper installation is crucial to the longevity of window tint. When window tint is professionally installed by experienced installers, it is less likely to develop issues like bubbles, creases, or edge peeling. Professional installers also ensure that the tint film adheres correctly to the glass surface.

Tint Type: The type of window tint can also affect its lifespan. Ceramic tints, for example, are known for their durability and resistance to fading compared to some other types of tints.

Exposure to Sunlight: Window tint is exposed to UV radiation and sunlight, which can cause fading and deterioration over time. Tint films with UV protection properties are better equipped to resist UV-induced fading.

Which company is best for tint?

Both LLumar and 3M are reputable brands of window tint, but LLumar offers better performance and durability. LLumar tints are known for their superior heat rejection and UV protection, which helps protect your car’s interior from fading and damage.

3M: 3M is a well-respected manufacturer of window tint films. They offer a wide range of tint options, including high-performance films known for their durability and heat-reduction capabilities. 3M also has a network of authorized dealers and installers.

LLumar: LLumar is a popular brand known for its quality window tint products. They offer a variety of tint films, including automotive, residential, and commercial options. LLumar has an extensive network of authorized dealers and installers.

Solar Gard: Solar Gard is known for its high-quality window tint films that provide heat reduction, UV protection, and privacy. They offer a range of tint solutions for automotive, residential, and commercial applications.

XPEL: XPEL is a manufacturer that specializes in automotive window tint and paint protection films. They are known for their advanced technologies, including ceramic and nanotechnology-based films.

Does Window Tint Keep Heat Out


Window tint’s ability to reduce heat penetration is rooted in its capacity to selectively filter sunlight. By absorbing or reflecting a significant portion of infrared (IR) radiation, the film effectively blocks the heat-carrying properties of sunlight while allowing visible light to pass through. Visible Light Transmission (VLT) percentage of window tint plays a crucial role in determining its heat-rejecting capabilities. Darker tints, with lower VLT percentages, tend to be more effective at keeping interiors cooler by reduce heat the amount of sunlight that enters.

Window tinting isn’t just about comfort—it’s about sustainability too. By reducing heat gain, especially in large commercial buildings and homes, window tint contributes to lower cooling costs and reduced energy consumption. This translates into financial savings and a reduced environmental footprint. For drivers and passengers, automotive window tinting can make a substantial difference in cabin temperatures, making hot summer drives more bearable. 

Window tinting offers added benefits beyond heat management. It provides privacy by limiting visibility from the outside, enhancing security and personal space. It also reduces glare, making it easier to work, drive, or relax without the harsh glare of direct sunlight. It’s essential to be aware of local regulations when considering window tint. Limits on darkness and reflectivity vary by region, and compliance is crucial to avoid legal issues. Window tinting technology continues to advance. Innovations like smart films and low-emissivity (Low-E) coatings offer new possibilities for controlling window transparency and improving insulation.

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

The reCAPTCHA verification period has expired. Please reload the page.

Back to top button