Looking to measure your car tint but not sure how to go about it? You’re in the right place! Car tint measurement is an important aspect of maintaining privacy and reducing heat and glare inside your vehicle. So, how is car tint measured exactly? In this blog post, we’ll delve into the ins and outs of car tint measurement and provide you with all the information you need to ensure your tint is compliant and effective. Let’s get started!
How Is Car Tint Measured
Car window tinting is not only a popular trend among vehicle owners, but it also offers numerous benefits such as heat reduction, glare reduction, and UV protection. However, when it comes to getting your car windows tinted, one important factor to consider is the measurement of the tint. In this article, we will explore how car tint is measured and the various methods employed by professionals to ensure a precise and accurate outcome.
Visible Light Transmission (VLT)
One of the most common measurements used to classify car tint is Visible Light Transmission (VLT). VLT refers to the amount of visible light that is allowed to pass through the window film. Expressed as a percentage, a lower VLT percentage means less light is transmitted, resulting in darker tinted windows.
Car window tints with higher VLT percentages are often referred to as “light” tints, while lower VLT percentages are associated with “dark” tints. The acceptable VLT percentage varies depending on local regulations, with some states allowing darker tints on rear windows compared to the front.
Here is a breakdown of common VLT percentages and their corresponding darkness levels:
- 50% VLT: Lightest tint, allowing the most visible light into the vehicle.
- 35% VLT: Moderately light tint, providing a balance between visibility and heat reduction.
- 20% VLT: Fairly dark tint, offering increased privacy and significant heat reduction.
- 5% VLT: Very dark tint, providing maximum privacy and substantial heat reduction.
It’s important to note that different car models have varying initial levels of light transmission, and applying tint can further reduce the VLT. Therefore, it is essential to consider your car’s base VLT level to ensure compliance with local regulations.
Infrared (IR) Rejection
In addition to VLT, car window tints are often measured based on their infrared (IR) rejection capabilities. Infrared light is a component of sunlight that contributes to heat buildup inside a vehicle. Window films with high IR rejection properties help to minimize heat transfer, keeping the interior cooler and reducing the workload on your car’s air conditioning system.
The measurement of IR rejection is expressed as a percentage, indicating the amount of infrared light that is blocked by the window film. The higher the IR rejection percentage, the more effective the tint is in reducing heat.
Most high-quality window films in the market today offer excellent IR rejection properties, with some providing up to 99% rejection. Investing in a window film with high IR rejection can significantly improve the comfort of your car’s interior and the overall driving experience, especially in hot and sunny climates.
Ultraviolet (UV) Protection
Car window tints also provide a crucial barrier against harmful ultraviolet (UV) rays. UV radiation from the sun can cause damage to your skin, eyes, and the interior of your vehicle. The SPF rating of window tint is used to measure its UV protection capabilities.
The SPF rating represents the level of protection the tint offers against UVB radiation. A higher SPF rating indicates a more effective UV barrier. It’s worth noting that even clear window films can offer UV protection, so it’s essential to choose a tint that offers adequate SPF to safeguard your health and preserve your car’s interior.
It is recommended to choose a window film with a minimum SPF of 30 to ensure optimal UV protection. High-quality tints can even provide SPF ratings of 50 or higher, offering excellent defense against harmful UV rays.
Measuring Techniques
Now that we understand the different measurements associated with car window tinting, let’s dive into the various techniques used to measure and verify these properties accurately:
- Tint Meter: A tint meter is a device used by professionals to measure the VLT of a window film. It consists of a light sensor that is placed on the interior side of the window, and the device measures the amount of light that passes through the film. This measurement is then displayed as a VLT percentage on the meter’s screen. Tint meters are calibrated to provide accurate readings and are commonly used by authorities to enforce tinting regulations.
- Spectrophotometer: A spectrophotometer is a more sophisticated device that can measure not only VLT but also IR rejection and UV protection. It uses advanced optical technology to analyze the transmitted, reflected, and absorbed light by the window film. Spectrophotometers provide precise measurements across the entire spectrum of light and are often utilized by manufacturers and professional tint installers to ensure the quality and performance of the window film.
By employing these measuring techniques, tint professionals can accurately assess the VLT, IR rejection, and UV protection properties of a window film, helping vehicle owners make informed decisions when choosing the right tint for their car.
Understanding how car tint is measured is crucial when it comes to selecting the right tint for your vehicle. By considering factors such as Visible Light Transmission (VLT), Infrared (IR) rejection, and Ultraviolet (UV) protection, you can ensure that your tint provides the desired level of darkness, heat reduction, and UV defense while complying with local regulations.
Professionals utilize tint meters and spectrophotometers to measure and verify the performance of window films accurately. These tools enable them to assess the VLT, IR rejection, and UV protection properties, ensuring a precise and satisfactory outcome.
Whether you’re looking to enhance your car’s aesthetics, reduce heat buildup, or protect yourself and your vehicle’s interior from harmful UV rays, understanding how car tint is measured empowers you to make an educated decision and enjoy the benefits of a well-tinted vehicle.
Frequently Asked Questions
How is car tint measured?
Car tint is measured using a unit called Visible Light Transmission (VLT) percentage, which represents the amount of light that can pass through the window film. The lower the VLT percentage, the darker the tint.
What is the common range of VLT percentages for car tint?
The common range of VLT percentages for car tint is typically between 5% and 50%. However, the specific limits can vary depending on the regulations set by different states or countries.
How is the VLT percentage measured?
The VLT percentage is measured by using a tint meter, also known as a photometer. This device shines light through the window film and measures the amount of light that is transmitted. The reading is then displayed as a percentage, indicating the VLT level.
Is it possible to measure car tint visually?
It is extremely difficult to accurately measure car tint visually. The human eye is not sensitive enough to determine the exact VLT percentage. Therefore, relying on professional tint meters is the most accurate and reliable method to measure car tint.
Are there any legal restrictions on car tint measurements?
Yes, there are often legal restrictions on the VLT percentages of car tint. These restrictions vary from place to place, so it is important to check your local regulations to ensure compliance. Violating tint regulations can result in fines or even legal consequences.
How can I find out the VLT percentage of my car tint?
If you are unsure about the VLT percentage of your car tint, you can consult the tint manufacturer or the professional who installed the tint. They should be able to provide you with the necessary information or assist in measuring the VLT percentage accurately.
Final Thoughts
Car tint measurement is a crucial factor to consider when selecting the appropriate tint for your vehicle. With various tools available, such as a tint meter or a VLT (Visible Light Transmission) meter, the process becomes much simpler. By utilizing these devices, the amount of light that can pass through the tint can be accurately measured and expressed as a percentage. This measurement helps determine the legality and effectiveness of the tint. Therefore, understanding how car tint is measured is essential to ensure compliance with regulations and achieve the desired level of tint darkness.