A windshield dam tape system that holds urethane in place. It maintains the windshield the proper distance from the pinchweld and promotes adhesive cure.

• A. Substrate
• B. Tape (Butyl or Foam)
• C. Sidelite
• D. Ultraviolet Light

Answer: (B)

The dam tape system is used to create a controlled barrier around the windshield opening. It holds the urethane in place as you apply the bead, defines the exact bond line thickness, and keeps the windshield at the proper distance from the pinchweld so the adhesive cures evenly. The tape acts as a dam and spacer, with butyl or foam variants providing both sealing and a stable gap during cure. Substrate refers to the car surface and isn’t a temporary barrier or spacer. Sidelite is a side glass panel, not part of the windshield installation. Ultraviolet light isn’t used to cure standard windshield urethane, which cures by moisture over time rather than UV exposure.