Washington State Window Tinting/Sunscreening Laws

Sunscreening devices are products, permanent, semi-permanent, and temporary, which reduce the adverse effects of the sun.

How dark can auto window tinting be in Washington State?

The maximum level of sunscreening material to be applied to any window, except the windshield, shall have a total reflectance of 35% or less ( +3%), and a light transmittance of 35% or more ( +3%) resulting in a minimum of 24% light transmission on AS-2 glazing. RCW 46.37.430

Exemption - Doctor's orders. RCW 46.37.430 A greater degree of sunscreening may be applied to the top 6" of the windshield. RCW 46.37.430

Materials not permitted

• Mirror finish products
• Red, Yellow, Gold, or Black material
• Brushed or sprayed on material. RCW 46.37.430

Sunscreening devices and/or recreational products may not be applied to, or suspended between the driver and the windshield, or to the windows to the immediate right and left of the driver. Recreational products may be applied to other windows only if they do not interfere, by their size and/or position with the driver's ability to see other vehicles, persons, and objects. RCW 46.37.430

Must have both left and right side-view mirrors if window tinting is applied, allowing a 200' view to the rear. RCW 46.37.430

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