The protection of polyurethane sealant is there to adhere to the glass. Its goal is not only to hold the glass in place but also to protect the cabin from rain and other precipitation. It’s important that it keeps its qualities for as long as possible. The frit band also helps protect the sealant from ultraviolet light, thanks to which the car is able to sit in the heat, under the burning sun, and its service life increases by a lot.
Aesthetic reasons: The frit closes the adhesive layer located along the edges of the glass. In addition, the halftone pattern has a rough surface, which serves as an excellent aid for adhesion.
The “third visor frit” is what the frits located on the windshield right behind the rearview mirror are called. Usually, this zone is expanded, and the dots located there differ in pattern from those along the edge. They help block out the sun’s rays that can’t be avoided behind the 2 front visors.

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