How to Replace an Auto Windshield

Replacing an auto windshield is a difficult task. Never try to change a windshield during inclement weather. Water should not touch the windshield for approximately 10 hours after replacing it. The windshield is model specific and you must take into consideration the windshield's special features, such as a tint or an integral radio antenna, when planning to replace a windshield.

Instructions

1

Remove the window reveal trim using the molding remover tool. Cut the urethane bead loose around the entire circumference of the window. This is the most difficult part of the job. The urethane must be cut entirely, with no strings attached to the window when it is pushed outward. One string will crack the window. If the person who installed the previous windshield pushed down too hard then it will only have about 1/8 inch bead. This makes it hard to cut from the outside. The knife must never touch the edge of the glass. This means that the bead must be cut from inside the vehicle using a long razor knife. Go slow and be precise.

2

Push the window out slowly. Watch for any adhesive still touching the window and cut it before proceeding.

3

Allow 3 mm of urethane sealer to remain on the vehicle. New urethane grips better on old urethane. Clean any dirt or foreign material away from the sealing area. Prime the new windshield with urethane primer around the outside edge where it will contact the urethane bead. Use a brush to spread it on the windshield.

4

Place a bead of urethane sealant around the window opening, over the top of the existing 1/8-inch of old urethane, using the electric bead gun. Align the windshield with the edges or the window opening. Make sure the windshield is centered properly before lowering it onto the urethane. Once it touches the urethane, it cannot be removed. Lay the windshield on top of the urethane bead. Push down on the edges of the windshield where it meets the urethane. Push on the entire circumference of the window edge to properly seat the window in the urethane so it does not leak.

5

Reinstall the window molding by centering it over the trim fasteners and pushing down.