FAQ

▍Q: What does HQ-5090 offer as the "Advanced Window Film for Modern Comfort"?

A: HQ-5090 is the mid-range performer in KOOFILM's HQ nano ceramic lineup — approximately 50% VLT for a subtle tinted appearance that is noticeable but not dark. It delivers strong infrared heat rejection and 96%+ UV blocking through nano ceramic particle technology. It is ideal for customers who prioritize cabin comfort and interior protection over an aggressively dark look, and for vehicles registered in regions with moderate tint regulations.

▍Q: What is the difference between HQ-5090 and the IR Series like IR-20100?

A: Both use nano ceramic technology, but they target different needs. The HQ Series (including HQ-5090) is the all-around performer — balanced heat rejection, solid UV blocking, and VLT options from clear to moderately dark, ideal for a factory-look tint. The IR Series is the performance-focused line — enhanced infrared-blocking ceramic formulations for maximum heat rejection, typically in darker VLT options. Think of HQ as the refined daily-driver and IR as the max-heat-rejection specialist.

▍Q: How should HQ-5090 be maintained after installation for maximum lifespan?

A: Allow 3-7 days for full curing — do not roll down windows during this period. For ongoing care: clean only with ammonia-free glass cleaner and a soft microfiber cloth; avoid abrasive sponges or scrapers; promptly remove bird droppings and tree sap. With proper care, HQ-5090's nano ceramic construction delivers years of stable color and heat-rejection performance without fading or discoloration.

▍Q: Can HQ-5090 be installed on sunroofs and rear windows with defroster lines?

A: Yes. HQ-5090 is suitable for side windows, rear windows with defroster lines, and sunroofs. It does not interfere with defroster function. Professional installation is essential for rear windows with heating elements — an experienced installer works parallel to defroster lines to avoid damage. For sunroof applications, HQ-5090 adds significant heat rejection at the largest overhead glass panel. Check local regulations for sunroof tint darkness.