How to repair a plastic bumper with heat

Written by robert russell
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An unfortunate encounter with a stray shopping trolley or parking too close to another car can easily lead to dents in your plastic bumper. Having the dent professionally repaired is an unnecessary expense. Dents in plastic bumpers are unsightly and annoying but in most cases you can make the repair by applying heat and pressure. Heating the plastic with a heat gun makes the plastic soft and malleable. This makes it possible to pop the dent back out.

Skill level:
Moderately Easy

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Things you need

  • Screwdriver
  • Gloves
  • Heat gun
  • Mallet
  • Spray bottle

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Instructions

  1. 1

    Visually inspect the dented area of the bumper. To repair a dent in a plastic bumper you will push the dent out from the backside. This may involve removing the bumper. If it is possible to access the rear of the bumper with the bumper still on the vehicle, there is no need to remove the bumper. If the bumper does need removal, use a screwdriver. The bumper is held in place with screws and clips.

  2. 2

    Heat the dent with a heat gun for five to 10 minutes.

  3. 3

    Gradually push the dent from the backside of the bumper with the appropriate tool. The appropriate tool depends on the size and severity of the dent. It is possible to push out minor dents with your finger. Make sure to wear gloves. Push larger dents out with the handle of a mallet or screwdriver. Apply pressure to the dent, starting at the most shallow edges, and move toward the centre of the dent. Continue until the bumper goes back into place.

  4. 4

    Spray the dent with water to cool the plastic.

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