❄️ Rear Defrosters: Still Work Just Fine (If You Know What You’re Doing)

Most rear windows have thin defroster lines built into the glass. They’re safe—as long as the tint is applied correctly.

✅ What You Want:

• A professional install that avoids scraping, cutting, or bubbling over the lines
• Films designed for automotive use that adhere smoothly to the defroster area

❌ What Can Go Wrong:

• Cheap install = razor blades + defroster = broken lines
• Tint lifted or bubbled around the lines = weak heating
• Peeling tint = trapped moisture and reduced performance

Bottom line: If your tint shop knows what they’re doing, your defroster stays strong.

📡 Antenna Systems: It Depends on the Tint Type

Modern cars hide antennas inside the rear windshield or side glass.

And here’s the key:

🚫 Metallic tint can interfere with:

• AM/FM radio reception
• GPS and navigational systems
• Satellite radio
• Keyless entry
• Bluetooth signals

✅ Ceramic tint doesn’t interfere with signals at all.

It blocks heat and UV without messing with your technology.
(And it’s why Tesla, Audi, and BMW owners always go ceramic.)

📡💡 Wait—How Do You Know If Your Antenna Is in the Glass?

• Check your rear windshield—do you see vertical or horizontal lines besides the defroster?
• Google your make/model + “glass antenna location”
• Or ask us—we’ll tell you before you choose a film

🧠 Pro Tip: Just Say No to Metallic in Smart Vehicles

If your car has:

• Smart keys
• Built-in GPS
• Rear glass antennas

You’re better off going ceramic every time.
It’s more expensive up front, but won’t mess with your tech, signal, or sanity.