How to Fix Car Window Rubber

Written by danny donahue
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How to Fix Car Window Rubber
The weather stripping around your car windows keeps moisture out. (Car image by cacheman from

The rubber weather stripping that surrounds your car windows keeps moisture out while keeping the heat and air conditioning inside where it belongs. Age, sun and accidents can all damage this protective gasket. Damage to the weather stripping on your car requires immediate attention so that the elements outside can not invade your vehicle and cause permanent damage. Repairing your rubber window gaskets takes just a bit of time, a few inexpensive supplies and a little know-how.

Skill level:

Things you need

  • Dust sheet
  • 5-in-1 putty knife
  • Rags
  • Denatured alcohol
  • Plastic 5 gallon bucket
  • Epoxy adhesive
  • Shears
  • Rubber window gasket
  • Safety glasses
  • Rubber gloves

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  1. 1

    Roll the car window down to expose the entire rubber gasket. Lay down your dust sheet onto the seat, the floor board and against the inside of the car door.

  2. 2

    Wedge the pointed end of your 5-in-1 putty knife into the window frame. Place the point against the top edge of the rubber. Twist the putty knife to pull the rubber down and away from the metal frame.

  3. 3

    Continue prying the rubber away from the window with your putty knife. Pull the loosened rubber gasket free with your free hand and discard the pieces into your bucket. Remove the old rubber and gently scrape the frame clean with your putty knife.

  4. 4

    Soak a rag with denatured alcohol. Rub the frame where your new rubber will be installed with the alcohol soaked rag. Rub every surface that will touch your gasket to remove all of the old adhesive.

  5. 5

    Slide the seating groove of your replacement gasket onto the receiving lip around the window. Trim the gasket with your shears to fit the frame. Remove the gasket from the frame.

  6. 6

    Mix your epoxy adhesive according to the manufacturer's recommendations. Apply a coat of epoxy inside of the seating groove of the new gasket. Press the gasket into place around the window frame. Let the epoxy cure for three hours before rolling up your window.

Tips and warnings

  • Safety glasses are needed when working with a putty knife.
  • Rubber gloves are necessary when working with epoxy.

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