What is an acceptable bonding surface after repairing a pinchweld?

A welded metal surface is an acceptable bonding surface after repairing a pinchweld because it ensures a strong and durable connection between the auto glass and the vehicle’s structure. Welding provides a solid foundation that is able to withstand the stresses that may be applied due to driving conditions or impacts.

In this context, welded metal offers superior strength compared to alternative methods. It creates a secure attachment point that enhances the integrity of the repair, reducing the risk of leaks or separation. This is particularly crucial in maintaining the safety features that auto glass provides.

Other options may not provide the same level of bonding. For instance, an epoxy coating might offer excellent adhesive properties but may not interface as robustly with the surrounding metal as a welded surface does. Sandpaper treatment, while useful for surface preparation, does not serve as a bonding surface on its own. A primed surface can be effective for certain adhesives but typically does not match the strength provided by welding in terms of structural integrity.