Help: What Are Those Black Dots on My Windshield?

windshield-dot
A vehicle’s windshield is arguably one of the most important elements to maintain its structure and the safety of the driver and its passengers in the event of an accident. However, many drivers and car owners may not fully understand its purpose. On top of having to watch for cracks and scratches, one might ask: what are the black dots on my windshield? Every windshield has peculiar patterned black stripes and dots on the edge of their windshield, but what is their purpose?

The black band and spots on the windshield are called the frit. An important windshield component, the frit is a black enamel band that is quite literally baked into the edges of the windshield glass, this is how the glass is bonded to the frame of the vehicle. When your windshield needs to be replaced or repaired, a technician uses the frit as a bonding point between glass and frame. The frit not only seals the union, but it also has the advantage of providing a polished appearance as it conceals the adhesive.

However, it does not stop there - the frit has a dual function. The inward facing side of the frit allows adhesive to bond to the windshield, while the outward facing portion serves as a UV radiation shield. In essence, this protection prevents long-term damage from continuous exposure to direct sunlight, which can damage or weaken the adhesion over time. Speaking of sun exposure, the frit also provides some heat dissipation as the dots do provide minor sun shade.

Glass America technicians are trained professionals who understand the many functions and necessities of the frit. Now, you too can understand the purpose of the black dots on your windshield.

Want your windshield inspected by The Best in Auto Glass? Contact Glass America today!