How to Replace the Rear Glass Window on a Car

Replacing the rear glass window on a car takes only a few simple tools and materials. Modern cars make it simpler to replace windshields because of the new adhesives that are applied to most cars. Weatherstripping and caulking are two key elements that lock glass in. Once these elements are removed, it allows for a relatively easy entryway for the new glass to be installed.

Instructions

1

Use a one-sided razor blade or a windshield knife to cut all the way around the window's weather-stripping perimeter, which is the black adhesive tape that secures the windshield. Maintain a slow and steady pace when using the knife to cut the perimeter. Start cutting from the bottom with the knife pointing up and away from the glass; this will prevent puncturing the glass or the car's exterior.

2

Go inside the vehicle and use a free hand to tap and press up on the rear window. This will help to loosen the windshield up from the seal. The glass should be easier to remove once it is fully detached from the threshold. Lift the glass from the outside. It may be helpful to have an assistant to help you lift the glass from the threshold.

3

Clean the windshield's opening with any commercial cleaner to remove the sticky substance from the weather-stripping adhesive. Replace the windshield's clips, if necessary.

4

Apply the seal to the replacement rear window. Apply a thin layer of urethane caulk with a caulk gun, spreading alongside the inside frame. Ask your assistant to help lift the rear windshield and place its edges onto the caulk. Put pressure on the top and bottom layer of the windshield so that it can set into the caulk.

5

Allow the rear window to dry and set into place for 24 hours.