01Automotive FAQs
Automotive tint questions, answered
Legal limits, film types, curing, and care — the auto-specific details.
Under Maine motor vehicle standards, tint restrictions vary by window placement. Rear & back side windows: any vehicle not otherwise restricted may feature unlimited dark tint on all glass behind the "B-Post" (directly behind the driver and front-passenger seats), provided the vehicle has dual outside rearview mirrors meeting state inspection requirements — no compliance certificate is needed for glass behind the B-post. Front side windows: glass beside the driver and front-seat passenger must allow at least 35% Light Transmittance after application; the finished glass must register 35% VLT or above on a digital tint meter, and an official compliance certificate must be kept in the vehicle. Windshield: you may apply unlimited dark tint to the very top section down to the factory AS-1 line; if the glass lacks an etched AS-1 mark, tint is restricted to the top 5 inches. No certificate is required for windshield tinting meeting this standard.
Yes. Maine state law mandates that vehicle owners carry a valid Certificate of Compliance for aftermarket window tinting materials. When you have your automotive tint applied at Portland Tint Inc., we handle the testing metrics and provide you with the official paperwork to keep you fully street-legal.
When you choose professional installation with us, your premium LLumar window films are protected by a lifetime warranty against cracking, peeling, adhesive failure, and demetallizing. (Some restrictions and limitations apply; contact your certified dealer for complete details.)
Every professional application at Portland Tint Inc. is backed by a national lifetime warranty. This premium coverage remains fully active for as long as you own the vehicle, protecting your investment nationwide.
No. To ensure maximum performance, optical clarity, and valid warranty coverage, LLumar window films must be installed by a certified professional using specialized climate-controlled equipment and precision cutting techniques.
We recommend keeping your windows fully rolled up for approximately 3 days after installation to allow the adhesive to cure completely. On rare occasions involving specific winter weather, we may advise waiting slightly longer. As a safeguard, our team will place protective reminder tape over your electronic window switches before you leave the shop.
Maintenance is remarkably simple. While window film requires a bit more mindfulness than raw glass, our LLumar coatings are highly scratch-resistant. You can clean your tinted windows safely using common household glass cleaners (ammonia-free recommended), soft cotton cloths, or non-abrasive paper towels. Just avoid scraping the surface with hard, sharp, or metallic objects.
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