North Carolina Window Tint Rules When a Window or Windshield Is Replaced

What a replacement window arrives with

Aftermarket tint is a film applied to the inside of the glass. When the glass breaks, the film goes with it. A replacement door window, quarter window or back glass comes as the glass alone, usually with whatever shade the glass itself is made with. A new windshield may carry a shade band along the top, which is part of the glass, not a film.

The limits in G.S. 20-127

Glass	What North Carolina allows
Windshield	Tint only along the top, not more than five inches below the top or below the AS1 line, whichever is longer. A clear UV-blocking film that does not obstruct vision is allowed. No exceptions.
Other windows	Total light transmission of at least 35 percent; a light meter reading over 32 percent is conclusively presumed to comply.
Reflectance	20 percent or less.
Colours	No red, yellow or amber film.

There are exceptions to the 35 percent rule for some vehicles and people: windows behind the driver on multipurpose vehicles such as minivans and pickups, limousines, and drivers with a medical exception permit. The windshield rule has no exceptions. A violation is a Class 3 misdemeanor under G.S. 20-127(d).

What changed in 2025

Section 22 of S.L. 2025-47 (Senate Bill 391) removed window tint from the vehicle safety inspection, effective December 1, 2025. Since then, a North Carolina inspection station no longer checks tint. That does not make darker tint legal: the limits in G.S. 20-127 still apply on the road, and they are enforced there instead.

The same statute now has a new subsection, G.S. 20-127(g): a driver whose windows are tinted must roll down the driver side window when a law enforcement officer approaches, or the passenger side window if the officer comes from that side.

Matching tint after a side window replacement

• Have the new window tinted with film that meets the 35 percent limit, even if the old film was darker. The old film being on the car before does not make a darker replacement legal.
• If the vehicle is a minivan or pickup, the windows behind the driver fall under the multipurpose vehicle exception, so a rear window there can be darker than on a car.
• Ask the tint shop to meter the window: a reading over 32 percent is presumed to comply.
• Avoid red, yellow and amber films, and highly mirrored ones over 20 percent reflectance.

Windshields and the AS1 line

Most windshields carry a small AS1 mark near the top edge. North Carolina allows tint down to that line or five inches from the top, whichever is longer, and nothing below it apart from a clear UV-blocking film that does not obstruct vision. A new windshield’s own shade band sits within that area on most vehicles; if you add a strip of film, keep it there. On a vehicle with a forward camera at the top of the windshield, keep film off the camera’s window altogether so the camera sees clearly.

Inspection still checks the wipers

With tint gone from the list, the parts of the safety inspection that concern glass come down to the wipers. G.S. 20-183.3 lists windshield wipers as required by G.S. 20-127(a), and the inspection rule says wipers fail if they do not operate freely, cannot clean rain, snow and other matter from the windshield, or have damaged or missing parts. The glass itself is not on the statutory list, and no North Carolina statute sets a crack size, though a crack in your line of sight is still a safety problem.

Getting the window replaced first

Impex Auto Glass replaces side windows, back glass and windshields at your address in Fayetteville and Cumberland County. Impex says most side windows take 30 to 60 minutes and can be driven straight away, and back glass about one to two hours, with no car wash and no rear defroster for 24 hours. Tinting comes after. See side window replacement, back glass replacement and the overview of auto glass repair in Fayetteville, NC.

Questions people ask