How Dark Can Window Tint Be in Washington State?

In Washington, the percentage of tint the windows can be for the front side, back side and the rear window is 24%. This percentage refers to visible light allowed in through the combination of film and the window. The windshield is allowed a non-reflective tint on the top 6 inches of the windshield.

How Reflective Can Window Tint Be in Washington State?

In Washington, the percentage of reflectiveness the windows can be is 35% for front side windows and back side windows.

State Window Tinting Laws (PDF)

Washington Window Tint Law Washington Tint Law Enacted: 1993

Window tinting laws vary from state to state and you should always thoroughly review the appropriate state regulations to make sure that you are in compliance with all applicable rules.

How Dark Can Window Tint Be in Washington State?

Darkness of tint is measured by Visible Light Transmission percentage (VLT%). In Washington, this percentage refers to the percentage of visible light allowed in through the combination of film and the window.

Windshield	Non-reflective tint is allowed on the top 6 inches of the windshield.
Front Side Windows	Must allow more than 24% of light in.
Back Side Windows	Must allow more than 24% of light in.
Rear Window	Must allow more than 24% of light in.

How Reflective Can Window Tint Be in Washington State?

Similar to sunglass lenses, some tinting film contain metallic elements that help in reflecting incoming light and reducing the glare and heat generated by visible light.

Front Side Windows	Must not be more than 35% reflective.
Back Side Windows	Must not be more than 35% reflective.

What Are Some Other Window Tint Rules in Washington State?

Restricted Colors	The tint color(s) of RED are not legal by state law.
Side Mirrors	Dual side mirrors are required if back window is tinted.
Certificate Requirements	Manufacturers of film need to certify the film they sell in the state. Ask your dealer if they are using ceritified film.
Sticker Requirements	The sticker to identify legal tinting is required between the film & glass on the driver’s side window.
Medical Exemption	State allows medical exemptions for special tint. For more details about the specific terms of the exemption, consult your state law.