Window Tint Guide: Compare
Red Flags When Shopping for Window Tint
Most bad tint jobs are not a surprise in hindsight. The warning signs were there at the quote: a promise that sounded too good, a question that got a vague answer, a missing piece of paper. The trouble is that you only learn which signs matter after you have paid for the lesson once.
This list collects the red flags worth walking away from, grouped by the law, the film, the work and the paperwork, with the better answer to listen for in each case. Use it on any shop, including The Auto Show.
The short answer
The biggest red flags are a shop that says very dark film like 5% or 20% is legal on regulated windows in South Carolina, skips the required compliance sticker, will not name the film brand and product line, cannot show a written warranty, or offers no receipt. Each one points to a ticket, early film failure or a warranty you cannot use.
Key points
- South Carolina requires at least 27% combined light transmission on regulated side and rear windows; any shop calling 5% or 20% legal there is wrong.
- Every after-factory tinted window must carry a certificate of compliance naming the installer; a professional tinter who skips it commits a misdemeanor.
- A shop should name the film's brand, product line and construction, not just say carbon or ceramic.
- Federal rules require sellers of warranted products to let you see the written warranty before you buy.
- No receipt means no proof of what was installed, when or by whom, which makes any warranty claim hard.
The law
Red Flags About the Law
South Carolina's tint law, S.C. Code § 56-5-5015, is short and specific. Film on the side windows next to and behind the driver, and on the rear-most window, must combine with the factory glass to let at least 27 percent of light through. Film must be nonreflective and cannot be red, yellow or amber. The windshield can take film only along the top, above the AS-1 line. The rear-window rule does not apply to multipurpose passenger vehicles and several other types, but it does apply to pickup trucks.
A shop that knows this law will talk about combined readings, your factory glass and your vehicle type. A shop that does not will talk about how dark it can go.
- "5% is legal here" or "20% is fine" on a sedan, coupe or pickup's regulated windows. It is not.
- "Nobody gets pulled over for tint." The owner or operator of a noncompliant vehicle can be charged with a misdemeanor under subsection (K).
- No mention of your factory glass. A film's rating is not what a meter reads once it is on tinted factory glass.
- An offer to film the whole windshield. South Carolina allows film only above the AS-1 line, and none at all if the line is not visible.
- Mirror or colored film presented as an option. The statute requires nonreflective film and bans red, yellow and amber.
- "The MPV exception covers your truck." Subsection (I) says the rule still applies behind the driver on pickups.
The sticker
No Certificate of Compliance
Subsection (E) requires every vehicle with after-factory film to carry a certificate of compliance on the inside lower right-hand corner of each tinted window. It must show the percentage of light transmission, the installer's name, address and telephone number, and the date of installation. The film manufacturer must supply the certificates and instructions for applying them.
The statute treats this seriously. A professional window tinter who installs film without permanently affixing the certificate is guilty of a misdemeanor, with a fine of not less than one thousand dollars or up to thirty days, or both, for each offense. A shop that says the sticker is optional, charges you to skip it or leaves it off is either careless or hoping you will not notice. The sticker is also how you or a future buyer identify who did the work.
The film
Red Flags About the Product
- No brand named"Our ceramic" or "premium film"
- Any reputable film has a manufacturer and a product line. If a shop cannot or will not tell you, you cannot check its specs or its warranty. Ask for the name in writing on the quote.
- Ceramic with no spec sheetA word, not a product
- Ceramic is a construction, and films vary widely in how much infrared heat they reject. Ask to see the manufacturer's published specs for the exact film and shade. How to read a spec sheet
- Heat numbers that sound too goodCheck what is being measured
- Some marketing quotes infrared rejection at a single wavelength or uses up-to numbers from the darkest shade. Ask which figure applies to the shade you are buying. Heat claims explained
- A lifetime claim with nothing in writingAsk whose lifetime the warranty means
- The FTC notes that a lifetime warranty can mean the life of the product, the original buyer's ownership or the buyer's own life. A spoken promise is not a warranty you can claim on.
The work
Red Flags About the Installation
- A firm full-car price over the phone without asking your year, make and model. Window count, glass shape and old film change the job.
- An offer to install new film over your old film. The statute refers to a single sunscreening device per regulated window, and layering makes the window darker.
- No questions about your car's age or condition. Older seals and trim can break during installation; a careful shop raises it before you book.
- Pressure to go darker than you asked for, or to add windows you did not want.
- A dirty, dusty work area. Dust and hair trapped under film are a common workmanship complaint, and they start with the room.
- No aftercare instructions. You should leave knowing how long to keep the windows up and how to clean the film.
Paperwork
Red Flags About Paperwork and Payment
The Federal Trade Commission's pre-sale availability rule requires the seller of a consumer product with a written warranty to make the warranty text available for you to examine before you buy. A shop that cannot show you written terms, or says the warranty is whatever they decide later, is not offering a warranty you can rely on.
Payment itself is not the issue; how it is documented is. Cash is fine if you get an itemized receipt. A cash-only job with no receipt leaves you with no record of the film, shade, date or installer, which is exactly what a warranty claim or a future buyer will ask for.
- No written quote naming the film and the windows covered.
- No itemized receipt after the work.
- No warranty document, or a refusal to show it before you pay.
- A deposit with no written booking terms.
Good signs
What a Good Answer Sounds Like
They check your vehicle first
A good shop asks for your vehicle, looks at whether you have factory privacy glass and confirms whether the rear-window exception applies.
They name the film
Brand, product line and construction on the quote, with published specs available.
They talk about the combined reading
They explain how the film and factory glass combine and keep regulated windows at 27 percent or lighter.
They put a sticker on every tinted window
Without being asked, with their name, address, phone number and the date.
They hand you paperwork
An itemized receipt, aftercare instructions and the film warranty terms.
| Red flag | Why it matters | The better answer |
|---|---|---|
| "5% is legal in SC" | Regulated windows need 27% combined | Measured, and kept at 27% or lighter |
| No compliance sticker | Required on every tinted window | A sticker on each window, naming the installer |
| "Our own ceramic" | No specs or warranty to check | Brand, product line and spec sheet |
| "Lifetime" with no document | Nothing to claim against | Written terms you can read before paying |
| Film over old film | Darker than allowed; poor adhesion | Old film removed first |
| Full-windshield film | Only above the AS-1 line is allowed | A visor strip above the line |
| No receipt | No proof of film, date or installer | Itemized receipt naming the film |
Shopping for tint in the Upstate?
Ask us the same questions. We install LLumar Carbon and LLumar Ceramic, check the legal shade for your vehicle before installing and put a South Carolina compliance sticker on every tinted window.
Common questions
Who gets in trouble if a shop installs illegal tint?
Potentially both. South Carolina's statute lets the owner or operator of a noncompliant vehicle be charged with a misdemeanor, and separately penalizes a professional tinter who skips the certificate of compliance or offers noncompliant film for use. Saying the shop told you it was legal will not change the reading on an officer's meter. This is not legal advice.
Is a very low tint price a red flag?
Not by itself, but find out why it is low. Usually it means dyed film instead of carbon or ceramic, fewer windows than you assumed, no warranty paperwork or rushed prep. Get the film brand, product line and window list in writing so you are comparing like with like before deciding.
Should I worry if a shop won't tint my older car?
No, that is often a sign of care. Rubber seals and plastic trim harden with age and can crack or snap during installation. A shop that declines, or explains the risk before you book, is being straight with you. The Auto Show, for example, does not tint vehicles more than 8 years old for this reason.
How can I check a shop's tint after the job?
Look for a compliance sticker on each tinted window with the installer's details and the date. Check edges for even gaps and no lifting, and look for dust or hair trapped under the film in good light. Small haze or water pockets in the first days are often normal; ask the installer about anything that has not cleared.
Sources
- S.C. Code Ann. § 56-5-5015, South Carolina Legislature (https://www.scstatehouse.gov/code/t56c005.php), accessed October 2026
- 16 CFR § 702.3 Pre-sale availability of written warranty terms, Legal Information Institute, Cornell Law School (https://www.law.cornell.edu/cfr/text/16/702.3), accessed October 2026
- Businessperson's Guide to Federal Warranty Law, Federal Trade Commission (https://www.ftc.gov/business-guidance/resources/businesspersons-guide-federal-warranty-law), accessed October 2026
- Ceramic Window Tint, LLumar (https://llumar.com/en/tint/ceramic/), accessed October 2026
- Automotive Installation Process, International Window Film Association (https://iwfa.com/automotive-installation-process/), accessed October 2026
Prices on this page are The Auto Show’s published starting prices. Film ratings and warranty terms come from the manufacturer. This guide explains South Carolina law in plain words; it is not legal advice.