Pinchweld flanges that hold stationary glass require proper treatment during repairs. This insures proper bonding of the glass which helps to maintain the structural integrity of the vehicle. If the glass is not properly bonded to the flange, it can alter how the structure reacts in a collision or even during normal body flexing and driving.

A two-component epoxy primer, such as DPLF Epoxy Primer or DPLV 2.1 VOC Epoxy Primer, must be used on bare metal areas of pinchwelds when installing stationary glass using urethane repair materials. If metal repair or metal replacement is required, remove any corrosion and/or existing primer from the pinchweld flange to expose clean, bare metal. In order to restore the bonding strength of the area, epoxy primer must be applied and should be the only coating between the bare metal and the urethane adhesive.

The PPG Refinish Assumptions Guide provides more detailed information on this process as well as many other useful refinish processes that can be helpful to collision repairers. Clink on the link below to check it out!