How to Repair a Car Plastic Bumper

How to Repair a Car Plastic Bumper

A part of a machine that receives the most external damage is the bumper. Bumper are an important safety feature that cushions the driver and passengers in case of collision. When a bumper carries an object, it is designed to squeeze, reducing the initial impact. Most automobile bumpers are made of plastic materials such as ABS. While ABS is extremely durable, it has a stress limit that can leave it broken and needs repairs after a collision. Use a couple of tools and glue to repair a Silverado 1500 Rear Bumper or other model, saving a large amount of money in the process.


  1. Remove the damaged bumper

Refer to a car repair manual to remove the bumper.

Remove the damaged bumper, referring to a car repair manual for the position of the bolts that secure the bumper to the position. Place any loose bolts and / or nuts in a can so that you do not get lost. Clean the inside of the bumper with a strong detergent designed to remove grease, mixed with hot water. This detergent can be found in any auto parts store. Allow the inner surface of the bumper to dry completely.

  1. Locate hidden screws in damaged bumper

This bumper is kept with the hidden screws.

Examine the damaged area completely. Most of the half-bolt light is in the form of stress cracks. Use a paint sticker tape to delineate the crack. The tape should allow a 2 inch edge around the slot to ensure that the entire damage area is fully identified. The adhesive tape border makes it easier to remember where the damage is.

  1. Fixing plastic bumpers

Plastic bumpers are easier to repair than metal bumpers.

Cut small pieces of fiberglass cloth 6 in pieces of the same size as the area marked with a painter's tape. Cut two pieces for each crack in repair. Mix the resin. Use a general purpose epoxy resin with a 50-50 mix ratio. This ratio equals a cup of resin mixed with a hardening cup. Place the bumper in a position allowing the slot to sit parallel to the ground. This keeps the dripping resin out of the slot, which is messy and rubbish resin.

  1. Fill the gap with a small amount of resin.
    Remove the adhesive tape and brush on a thick layer of resin around the damaged area. Carefully place a fiberglass cloth on the damp resin. Smooth the fiberglass fabric out so there are no wrinkles. Place another layer of resin on the top of the fiberglass fabric. Repeat the procedure for remaining cracks. Allow the resin to dry for six to eight hours.
  1. Sand the areas covered with resin lightly by hand
    Using 220-grain sandpaper.

Remove the resin powder and apply a thick layer of resin. Add the second piece of fiberglass fabric and apply another thick layer of resin on top of the fabric. Leave the drying time 24 hours. Reinstall the bumper and the project is complete.

In any case, you can visit a mechanic to get your Silverado Chrome Rear Bumper repaired without any damage or mess.