Repairing Guides

how to repair a cracked plastic car bumper

by Dr. Jaime Ryan Jr. Published 2 years ago Updated 1 year ago
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Cracked Bumper Repair

  1. Remove the Bumper. Here's what the bumper damage looks like before the repair. ...
  2. Sanding. Next, use a dremel tool to carve a V shaped groove in the back of the bumper along the crack. ...
  3. Apply Epoxy. A clamp was applied at the top of the crack to prevent it from separating. JB Weld Plastic bonder was applied along the crack.
  4. Fill in the Crack. Once the epoxy has dried overnight and cured, the tape and supporting clamps can be removed. ...
  5. Prime and Paint the Bumper. The sanded area of the bumper was then primed with two light coats of primer. ...
  6. Reinstall the Bumper. Once the paint has cured and can be handled, the bumper can then be reinstalled on the vehicle. ...

Part of a video titled DIY Bumper Crack Repair - YouTube
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Holds. I'm going to take a little bit of 40 grit sandpaper. And rough up the area around the crack.MoreHolds. I'm going to take a little bit of 40 grit sandpaper. And rough up the area around the crack. And next we can use a little bit of acetone or alcohol to clean the crack both on the inside.

How much does a cracked bumper cost to fix?

We recommend that you avoid over-speeding and take it to professionals for repair as soon as you notice a serious crack in your bumper. Although it might cost you between $300 and $1500, depending on the vehicle, but it is better to repair it while you can than cause greater havoc as a result of your negligence.

How to repair your scratched plastic bumper?

  • 80 and 40-grit sandpaper for stripping.
  • 500 and 600-grit sandpaper for finishing.
  • Rubbing alcohol, and abrasive cleaner or stripper.
  • Utility blades.
  • Black Body filler (for deep scratches.)
  • High-quality black bumper polish.
  • Polishing rags (microfiber works best.)

How much to repair cracked rear bumper?

  • Dented bumper, deep paint scratches, cracked windshield, suspension damage and rear-end damage are some of the common auto body damages you may face.
  • The repair cost of a car's damaged body parts ranges between $50 to $1,500 and more. ...
  • You will require collision coverage to repair dented bumper, suspension damage and rear-end damage. ...

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How to fix a rusted chrome bumper?

Method 4 Method 4 of 4: Repairing and Protecting Chrome after Rust Removal

  1. Buff and dry the surface. If the rust only showed through the chrome in pinpricks, drying the surface with a towel after cleaning may be enough to keep up ...
  2. Protect the metal using polish or wax. Apply a wax or polish to the chrome to protect it from any further damage.
  3. Apply silver paint. ...
  4. Get the object re-chromed. ...

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Can a cracked plastic bumper be repaired?

Nearly every cracked plastic bumper can be repaired, and usually for less than half the cost of a new bumper. While almost every cracked bumper can be repaired, it isn't always practical. A plastic bumper crack repair job requires a special plastic welding technique plus the application of structural adhesives.

What filler can I use on a plastic bumper?

Choose a flexible filler such as 3M™ EZ Sand Multi-Purpose Repair Material.

Can you plastic weld a cracked bumper?

0:104:30Bumper Repair with Plastic Welder - YouTubeYouTubeStart of suggested clipEnd of suggested clipCut the stainless steel reinforcing mesh so that the mesh will span the crack about a half inch onMoreCut the stainless steel reinforcing mesh so that the mesh will span the crack about a half inch on each side of the crack. Use the welder to bury the mesh into the plastic.

Can you Gorilla Glue a car bumper?

While a popular house product, people may ask, “Can Gorilla Glue be used on cars? any of their products are great automotive glues.

Can I use normal filler on plastic bumper?

Body filler is also not designed to adhere to a plastic surface the way that it adheres to metal. Most plastics require an adhesion promotor to allow the plastic repair material to adhere to the surface.

Will Bondo work on a plastic bumper?

2:276:06Can Body Filler Bondo Be Applied On Plastic Bumper Covers? Q&AYouTubeStart of suggested clipEnd of suggested clipSo it is not designed for that you know just won't hold up don't have the flexibility. Or anythingMoreSo it is not designed for that you know just won't hold up don't have the flexibility. Or anything like that now well you can use like when if you got a damaged.

Can you fix a cracked bumper without replacing it?

However, cracking in the bumper cannot be repaired and this affects the structural integrity of this part. It weakens it, which can mean it offers less protection if you are in another accident in the future. As such, if there is any cracking on your bumper after the accident, the bumper will need to be replaced.

Can I use JB Weld to fix my bumper?

1:046:47How To Repair A Torn Bumper Cover, Review JB Weld Plastic BonderYouTubeStart of suggested clipEnd of suggested clipThis is a material that I use the jb weld plastic Bhandar. And if you take a look at. It. There youMoreThis is a material that I use the jb weld plastic Bhandar. And if you take a look at. It. There you go so it's body panel adhesive. So this is the really really good stuff for plastic.

How do you bond cracked plastic?

Selecting the right adhesive to repair cracked plastic Our favourite is Loctite Super Glue All Plastics. This specialty super glue is designed for plastics, including the hard-to-bond-to polypropylene and polyethylene. It comes with an activator which you apply first and need to allow to dry for 60 seconds.

How do you glue a cracked bumper?

0:528:11Bumper DIY Crack Repair. Fix all types! - YouTubeYouTubeStart of suggested clipEnd of suggested clipThis is what we're gonna be using to repair to crack. This is a two-part epoxy. Now it's the gorillaMoreThis is what we're gonna be using to repair to crack. This is a two-part epoxy. Now it's the gorilla mech but it can be any type of two-part epoxy. And this is just regular bandage.

What is the strongest glue to use on plastic?

The strongest glue to use on plastic is usually a two-part epoxy, like JB Weld PlasticWeld in a syringe. It adheres very quickly and strongly to most types of plastic, so you can form a fast, strong bond.

What glue works on hard plastic?

The best glue for many hard plastic items is a gel, such as LePage 100% Glue Repair Gel. With is revolutionary FLEXTEC formula, it will create an extra-strong and flexible bond suitable for even extreme conditions like freezers.

How do you fill a plastic bumper?

1:464:47ISOPON Plastic Bumper Filler Repair Kit (UP5001) - YouTubeYouTubeStart of suggested clipEnd of suggested clipApply the repair within four minutes of starting to mix. Apply the filler in one application. So theMoreApply the repair within four minutes of starting to mix. Apply the filler in one application. So the final surface is slightly higher than the surrounding.

How do you fill a hole in a plastic bumper?

2:077:20How To Repair a HOLE in a Plastic Bumper Cover! - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd it's kind of jagged II and you busted a piece out. All you do is take a piece of cardboard. AllMoreAnd it's kind of jagged II and you busted a piece out. All you do is take a piece of cardboard. All right do the same thing put your wax tape around the backside.

What is the best plastic body filler?

We have listed the top three rated car body fillers below;3M Bondo 261 Lightweight Car Body Filler.Permatex 25909 Liquid Metal Filler.Evercoat 156 Lightweight Car Body Filler.

Can I use fiberglass filler on plastic?

Fiberglass is commonly used for repairs or reinforcement on materials such as plastics, wood, metal, and even plastic foam. Fiberglass will bond to almost any surface as long as the surface is properly prepared and scuffed.

How to Fix Cracked Bumper

There are two very popular different options; you can choose any of them.

FAQ Section

Answer: Body filler can be used on the plastic bumper. But you have to choose the suitable one for your car. Otherwise, you’ll face problems in adhering fillers to plastic bodies.

Cracked Bumper Repair or Replace?

Depends on the crack you can either repair or replace it. The repairing cost of crack is immense if you go to the workshop. Small cracks can repair easily by following our process. Now the decision is yours!

What to do if your bumper is cut?

If the bumper is cut or torn through completely, make sure to scrub the inner and outer surfaces. After rinsing and letting the surface dry, wipe the area with prep solvent, moving in only one direction. Ask Question.

How to repair a bumper with a 400 grit paper?

Once the primer has hardened, dry sand the repaired areas with 400-grit paper to level it and remove any imperfections. Before spraying the bumper with basecoat, wetsand it and gently wipe the area with a tack rag to remove dust, then spray according to the manufacturer's instructions.

How long does it take for a fascia to dry before painting?

When the repair is completed, apply two wet coats of flexible part sealer. After drying for 30 minutes , the fascia is ready for priming and painting. Prime the fender with two coats of any two-part primer-surfacer, making sure to let the primer dry between coats.

How to repair a tear in the back of a fascia?

If the cut or tear is large, you might have to align and then hold the edges of the repair with masking tape on the front of the fascia. Use self-stick fiberglass-repair tape to add structure to the cut or tear.

Can you repair a bruised bumper?

Fortunately for your bruised bumper, plastic repair and refinishing materials are widely available and reasonably simple to use. Fixing damaged plastic bumpers involves grinding, sanding, sculpting, and painting, but it's worth the effort for repairs that would cost less than your deductible. Ask Question.

Step 1

If you can tape the damage back together with masking tape, you can do the repair.

Step 2

Go back to the front side and remove the tape. Using a dremel or a drill V groove out the cracks.

Step 4

After 24 hours, you can start to sand the repaired area. You can start with 120 grit paper and change to 220 grit to finish. The repair will sand perfectly flat and smooth because the repair is the same ABS compound as the surrounding bumper.

Step 5

Do NOT use any fiberglass fillers or any other product that uses a hardner or catalyst. These products will not stay in place and will in time crack and fall out. You can use a spot putty that is designed to be used on flexible material but do not put it on very thick.

Step 6

When perfectly smooth prime with a good quality primer designed for plastic surfaces. Sand with 400 grit paper.

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