Maine Window Tint Laws Explained: Legal VLT Limits for 2026

Mainers run the gamut from coastal commuters to folks logging serious miles on I-95, and tint is one of the few upgrades that pays off in every season — less glare off the snow, less heat in August. The number to anchor on: every side window and rear window must allow at least 35% VLT. The windshield, meanwhile, basically can’t be tinted below the top strip at all.

How dark can you legally tint in Maine?

35% VLT is the line for every side and rear window. Under 29-A M.R.S.A. § 1916, a side or rear window may not be treated with material allowing light transmittance of less than 35% net of glass and material, the windshield may not be tinted to cut light below the original glass, and no window may be reflective. The full statute is also published as a Maine Legislature PDF.

Don’t fall for these two Maine tint traps

Trap: mirrored or “chrome” film is fine if it’s light enough. Not in Maine. The statute prohibits any window that is reflective, period — the VLT number doesn’t save a mirrored film. If it bounces light, it’s out.

Trap: tint and inspection have nothing to do with each other. Maine ties them together. If your windows are tinted, you’re supposed to carry a light-transmittance certificate and show it to the inspection mechanic, and an officer who asks for it and doesn’t get one is allowed to presume your vehicle doesn’t comply. That paperwork is part of the job, not an afterthought.

Reflective glass, the windshield strip, and the certificate

Reflective treatment is banned outright, which rules out mirror-finish and many high-metal films regardless of darkness. On the windshield you only get tint above the AS-1 line, or a 5-inch strip at the top if there’s no AS-1 marking — and Maine’s statute points straight to that marking as defined in the federal glazing standard, FMVSS 205 (49 CFR 571.205). The light-transmittance certificate is its own requirement: installers who put on tint for compensation must issue one, and it stays with the vehicle.

Penalties and what you must keep

A violation of § 1916 is a traffic infraction with a forfeiture of not less than $100, and the practical sting is failing inspection until the film is corrected. The medical exemption here is real and statutory: the Chief of the State Police can grant an exception when sunlight adversely affects the health of the owner or a usual occupant, and that certificate of exemption has to be shown on request. Keep both pieces of paper — the transmittance certificate and any exemption certificate — where you can hand them over.

What to do: Spec a non-reflective 35% film for all the side and rear windows, keep the windshield clear below the top strip, and make sure your installer issues the light-transmittance certificate so you can show it at inspection.

The reassuring thing about Maine is that the rules are easy to hit cleanly: a quality non-reflective 35% film, a clear windshield, and the certificate in the glovebox cover you in nearly every case. We spec that exact build for Dallas–Fort Worth drivers on our window tint service and lay out the numbers on our window tint laws hub. Shade tiers live on pricing, and you can get started whenever you’re ready; if your real concern is heat, UV, and finish, look at ceramic coating and paint protection film, and compare other states on our Vermont and Texas guides.