Where Arizona draws the line on windshield tint — literally
Arizona allows non-reflective tint on your windshield only above the AS-1 line. Everything below that line has to stay clear. Front side windows must let at least 33% of visible light through. Back side windows and the rear glass can be as dark as you want, provided the vehicle has working mirrors on both sides. That is the short version of A.R.S. § 28-959.01, and the part drivers get wrong is almost never the percentage — it is the AS-1 line, because most people have never been told where it is or that it moves when the glass is replaced.
How to find the AS-1 line on your own windshield
AS-1 is a glazing designation. You will usually see "AS1" stamped inside the monogram — the small etched block of manufacturer text in a lower corner of the windshield. The AS-1 line is something different: a short etched mark, notch, or arrow near the top edge of the glass, typically on both the driver and passenger sides, a few inches down from the roofline. Draw an imaginary horizontal line between those two marks and you have the boundary. Tint above it is permitted. Tint below it is not.
Two things complicate this in the real world. First, the dark ceramic band across the top of most windshields — the shade band, sometimes called the sunband or frit — is baked into the glass at the factory and is not tint. It is legal regardless of depth because it came that way. People see it and assume they can match it with film. Second, not every windshield carries a visible AS-1 mark. If you cannot find one, the conservative approach is to treat the bottom edge of the factory shade band as your ceiling and confirm with the Arizona Department of Public Safety before an installer cuts film. Guessing costs you a fix-it citation and a stripped windshield.
The numbers Arizona actually uses
- Windshield: non-reflective tint above the AS-1 line only.
- Front side windows: must transmit more than 33% of visible light.
- Back side windows and rear window: any darkness.
- Reflectivity: side windows may not be more than 35% reflective.
- Mirrors: dual side mirrors are required when the rear window is tinted.
- Medical exemption: Arizona provides for one, supported by a signed statement from a physician.
Notice what is not on that list: an exception for high-VLT "clear" ceramic film across the full windshield. Installers in Phoenix and Tucson sell it hard because it genuinely cuts heat, and the statute simply does not carve out a below-the-line allowance based on how light the film is. If you are considering it, go in knowing that.
Why this matters the day your windshield gets replaced
Here is the connection nobody makes until it bites them. Tint film lives on the glass. When the glass comes out, the film goes with it. A windshield replacement always means starting over on any strip you had along the top, and the new glass may not give you the same canvas the old one did.
Windshields for the same vehicle can exist under several part numbers — OEM, OEM-equivalent, and aftermarket — and the depth and darkness of the factory shade band is one of the details that varies between them. So does the presence and placement of the AS-1 etch. We have pulled a windshield with a deep band and installed a replacement whose band was noticeably shallower, and suddenly the customer's carefully placed tint strip from three years ago would have sat partly below the line. Same car, same tint shop, different glass.
So before you re-tint: find the AS-1 mark on the new windshield, not the one you remember. And if any part of your decision depends on part choice, ask which glass is going in and why. Availability, acoustic interlayers, heated wiper park, rain sensors, HUD compatibility, and camera brackets all drive that answer.
Cameras, brackets, and the top of the glass
On most vehicles built in the last decade, the forward-facing camera for lane keeping and automatic emergency braking sits in a bracket right behind the mirror — inside the shade band, inside the AS-1 zone. Film applied over or around that window can interfere with what the camera sees, and the camera itself has to be recalibrated after the glass is replaced regardless. If your vehicle has driver assistance features, plan on ADAS calibration as part of the job, and tell your tint installer where the camera aperture is so they cut clear of it. That aperture is not a place to improvise.
Heat, gravel, and the Arizona-specific reality
Tint demand here is not cosmetic. A car parked at a Chandler or Gilbert office lot in July has interior glass surfaces well past 140F, and the dash reflection alone can make a windshield harder to see through. Good ceramic film on the front and rear door glass does far more for cabin temperature than a windshield strip ever will, and it is unambiguously legal at 33% or lighter up front and any darkness in back.
Heat also matters for damage. Monsoon season loads I-10, the Loop 101, and the Superstition with gravel, and a rock chip that took a hit at 5pm can run into a crack when the AC hits the hot glass on the way home. A chip up in the shade band area is often still repairable. One directly in the driver's primary viewing area frequently is not — a finished repair leaves some optical distortion, and most techs will decline rather than put that in your sightline. That distinction, not the size of the chip, is usually what decides repair versus replacement.
Insurance, and who picks the shop
Arizona is not Florida. There is no statute here that automatically waives your comprehensive deductible for glass. What A.R.S. § 20-264 does is require insurers to offer an optional full-glass endorsement with no deductible — you have to have bought it. Many Arizona drivers did, years ago, and forgot. It is worth checking before you assume you are paying out of pocket; we verify coverage for free and can walk you through how Arizona glass claims work before anything is scheduled.
Two other statutes are worth knowing. A.R.S. § 20-469 means you choose the shop, not your insurer's network list. A.R.S. § 20-263 bars an insurer from raising your premium as a result of an accident you did not cause or significantly contribute to. The statute is written about accidents rather than glass, and rating practices vary by carrier. Tint film is a separate question — it is an aftermarket addition, and whether your policy covers re-application depends on your specific policy language, so ask before you assume.
One last piece of timing. Do not book a tint appointment for the same afternoon as a glass replacement. Urethane needs to cure before the vehicle is safe to drive, and safe drive-away time depends on the specific adhesive, the ambient temperature and humidity, and how your airbags deploy against the glass — a 112-degree Phoenix afternoon and a 60-degree February morning are not the same job. Your installer will give you the number for your vehicle on the day. Film should go on after the glass is fully set and clean.
We work out of trucks, not a building — every job is done wherever the vehicle is parked, from Phoenix and the surrounding Valley out through Mesa, Scottsdale, Tempe, and Tucson, with next-day appointments in most areas. Across 17,000-plus completed jobs we have seen every version of the shade-band surprise described above. If you want the AS-1 question settled before you commit to film, ask us to look at the specific glass going into your car, and know that the installation itself is backed by our lifetime workmanship warranty anywhere we work in Arizona.