How do you repair a car bumper crack?

What’s the best way to repair a crack in my car bumper? I don’t want to pay to take it in but it’ll probably just get worse if I don’t fix it now.

Answer
Cracked bumpers may not be worth replacing, but they should still be fixed. To repair a car bumper with a crack, follow these steps:
  • First, remove the bumper to prevent further damage.
  • Use a dremel, boxcutter, or razor blade to carve a V-shaped groove into the back of the bumper following the crack. This will give you more surface area to apply the adhesive, so it’ll be easier to stick the bumper back together.
  • Tape the front of the bumper so that the crack is flush with the rest. You can also clamp the crack to prevent it from separating during the next step.
  • Now, apply epoxy to the crack and put some drywall mesh tape over the back before it dries. Then cover the tape with another layer of epoxy.
  • Once the epoxy dries, remove the tape and clamps and apply touchup paint to the discolored area.
  • Use a body filler to fill in any depressions in the bumper and sand it down with 320-grit sandpaper until the crack is flush with the rest of the bumper.
  • Finally, prime and paint the bumper before putting it back on your car.
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Liz Jenson
Answered on Nov 12, 2021
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