Does House Window Tint Block Sunlight?

Does House Window Tint Block Sunlight?

House window tint can block a portion of sunlight, depending on the type and darkness of the tint.

Here’s how window tint can affect sunlight penetration…

Light Reduction

  • Visible Light Transmission (VLT) – Window tint typically comes with a VLT rating, which indicates the percentage of visible light that can pass through the tinted window. Tints with lower VLT ratings block more sunlight, while those with higher ratings allow more light to pass through.

Heat Reduction

  • Solar Heat Gain – Many window tints are designed to block a significant portion of the sun’s infrared (IR) radiation, which contributes to heat buildup indoors. By reducing solar heat gain, window tint can help keep interior spaces cooler, even if it doesn’t block all sunlight.

Glare Reduction

  • Glare Reduction – Window tints can also help reduce glare from direct sunlight, making indoor spaces more comfortable and improving visibility, particularly in areas with high sun exposure.


  • Privacy Tint – Some window tints are designed to provide privacy by blocking the view from the outside while still allowing natural light to enter the room. These privacy tints typically have a darker appearance and may block more sunlight compared to clear or lightly tinted films.

Types of Window Tint

  • Reflective Tint – Reflective window tint reflects sunlight away from the windows, reducing both heat and light transmission. These tints are often used in commercial buildings and offer a high degree of privacy and heat rejection.
  • Non-Reflective Tint – Non-reflective window tint absorbs or absorbs and scatters sunlight rather than reflecting it. These tints are available in various shades and provide a balance between heat reduction, glare reduction, and visible light transmission.

While house window tint can block sunlight to some extent, the degree of sunlight blockage depends on factors such as the type, darkness, and properties of the tint. It’s vital to choose a window tint that aligns with your specific needs regarding light transmission, heat reduction, glare reduction, and privacy.