How to Repair Dented Garage Door

Dented garage doors are unsightly and can be dangerous. However, if you have a dent in your garage door, there is no need to replace the entire door. Instead, you can quickly repair the damage with a few simple tools. This article will show you how to repair dented garage door. We will also provide some tips on preventing further damage to your door. Keep reading to learn more.

How to Repair Dented Garage Door

A garage is a place where you park your car and store all the tools, equipment, and other belongings. It is also a place to work on your car or do some repairs.

Summary: If you have a dented garage door, don’t worry! You can fix it easily with just a few tools. First, remove any loose or damaged material from the dent. Then, use a heat source such as a hairdryer to warm up the metal. Once the metal is warm, use a can of compressed air to cool it down quickly. This will help to pop the dent out. You can use a rubber mallet or plunger to help push the metal back into shape if necessary.

Why Should You Immediately Repair a Dented Garage Door?

Your garage door is one of the essential parts of your home, and it’s essential to keep it in good condition. A dented garage door can cause several problems, including:

  1. Difficulty opening and closing the door. It may become difficult to open and close if your garage door is dented. This can be a major inconvenience, especially if you use your garage frequently.
  2. Decreased security: A dented garage door is more likely to be forced open than a non-dented door. This could put your home at risk for break-ins and theft.
  3. Damage to your car: If your garage door is damaged, it could fall and hit your car, causing damage.
  4. Increased energy bills: If your garage door is not functioning correctly, cold air could enter your home, resulting in higher energy bills.

If you have a dented garage door, it’s essential to repair it as soon as possible. Waiting to repair the damage can cause further problems and make the repairs more difficult and expensive. You can either call a professional to come out and take care of it for you or try to repair it yourself.

Determine the Extent of the Damage

Garage doors can suffer a lot of damage, especially if they are not properly maintained. The most common type of damage is denting, which can be caused by several things such as vehicles, falling objects, or even extreme weather conditions.

The first step in repairing a dented garage door is determining the extent of the damage. This can be done by simply inspecting the door for any signs of warping, cracks, or other damage. Once you have determined the extent of the damage, you can then proceed with repairing it.

Repairing a Dented Garage Door

If the damage to your garage door is minor, such as a small dent or scratch, then you may be able to repair it yourself. However, if the damage is more severe, such as a significant dent or crack, you will need to call in a professional.

A Detailed Guide on How to Repair Dented Garage Door

Step 1: Gather Necessary Tools and Materials

Before you begin repairing a dented garage door, gather the necessary tools and materials. You will need the following items:

  • Clean cloth or sponge
  • Dish soap or mild detergent
  • Bucket of warm water
  • Plunger
  • Vacuum cleaner with hose attachment
  • Hairdryer or heat gun
  • Compressed air canister
  • Sandpaper (120-grit and 220-grit)
  • Auto body filler
  • Putty knife
  • Sanding block or electric sander
  • Primer
  • Paint
  • Paintbrush or roller

Step 2: Clean the Dented Area

Using a clean cloth or sponge and a solution of dish soap or mild detergent mixed with warm water, clean the dented area on the garage door. This will help to remove any dirt, grease, or debris that could interfere with the repair process. Rinse the area with clean water and allow it to dry completely.

Step 3: Assess the Dent

Examine the dented area to determine the severity of the damage. If the dent is shallow and there is no damage to the paint, you may be able to use a plunger or the heat-and-cold method to repair it. If the dent is deep or the paint is damaged, you may need to use auto body filler to repair the damage.

Step 4: Repair Shallow Dents with a Plunger

For shallow dents, you can use a plunger to create suction and pull the dent out. Wet the plunger and the dented area with warm water, then place the plunger over the dent and push it in to create suction. Pull the plunger back out, and the dent should pop out with it. Repeat the process if necessary until the dent is no longer visible.

Step 5: Repair Shallow Dents with Heat and Cold

If the plunger method is unsuccessful, you can try using heat and cold to repair the dent. First, use a hairdryer or heat gun to heat the dented area for about 2-3 minutes, holding it about 6 inches away from the surface. This will cause the metal to expand. Next, quickly spray the heated area with a can of compressed air, which will cause the metal to contract rapidly, potentially popping the dent out. Repeat the process if necessary until the dent is no longer visible.

Step 6: Repair Deep Dents with Auto Body Filler

For deep dents or dents with damaged paint, you will need to use auto body filler to repair the damage. Start by sanding the dented area with 120-grit sandpaper to remove any paint or debris, then clean the area again with a cloth or sponge and warm soapy water. Allow the area to dry completely.

Step 7: Apply Auto Body Filler

Following the manufacturer’s instructions, mix the auto body filler and apply it to the dented area using a putty knife. Smooth the filler so that it is slightly higher than the surrounding surface, as it will shrink slightly as it dries. Allow the filler to dry according to the manufacturer’s recommendations.

Step 8: Sand the Filler

Once the auto body filler is dry, use a sanding block or electric sander with 120-grit sandpaper to sand the filler until it is smooth and even with the surrounding surface. Be careful not to over-sand or damage the surrounding paint. Wipe away any sanding dust with a clean cloth.

Step 9: Apply Primer

Before painting the repaired area, apply a high-quality primer to the sanded filler and surrounding paint. This will help to ensure proper adhesion and coverage of the paint. Allow the primer to dry according to the manufacturer’s instructions Step 10: Sand the Primer

Once the primer is dry, lightly sand the primed area with 220-grit sandpaper to ensure a smooth and even surface for painting. Be sure to sand the edges of the primer to blend it seamlessly with the surrounding paint. Wipe away any sanding dust with a clean cloth.

Step 11: Paint the Repaired Area

Select a paint that matches the color of your garage door. It’s essential to choose a high-quality, weather-resistant paint that is suitable for outdoor use. Using a paintbrush or roller, apply the paint to the repaired area, feathering the edges outward to blend it with the surrounding paint. Allow the paint to dry according to the manufacturer’s instructions, then apply additional coats as needed to achieve the desired coverage and color.

Step 12: Inspect the Repair

Once the paint is dry, inspect the repaired area to ensure the dent is no longer visible and the paint has blended seamlessly with the surrounding surface. If any imperfections are still visible, repeat the sanding, priming, and painting process as necessary until the desired result is achieved.

Step 13: Apply a Clear Coat (Optional)

For added protection and durability, you can apply a clear coat to the repaired area. This will provide a protective barrier against weather, UV rays, and other elements that can cause damage to the paint. Apply the clear coat according to the manufacturer’s instructions, allowing it to dry completely before using the garage door.

Step 14: Clean Up

Dispose of any debris, such as sanding dust, paint, or filler, in accordance with local regulations. Store any unused materials and tools for future use or return them to their proper locations.

By following these steps, you can successfully repair a dented garage door, restoring its appearance and functionality. Regular maintenance and prompt repair of any damage will help to extend the life of your garage door, ensuring it remains in good condition for years to come.

Use a clean rag to remove any dirt, dust, or debris from the area around the dent. This will help the Bondo to adhere to the garage door.

Use a putty knife to apply a thick layer of Bondo to the dent. Be sure to smooth out the Bondo to level with the rest of the garage door. Allow the Bondo to dry for at least 24 hours.

Use sandpaper to sand down the Bondo until it is level with the rest of the garage door. Be sure to use fine-grit sandpaper so that you do not damage the door.

Use a primer to prime the area around the Bondo. Once the primer is dry, use paint that matches your garage door’s color to paint over the Bondo. Allow the paint to dry for at least 24 hours before using the garage door.

Use Paint That Matches Your Garage Door's Color

By following these steps, you should be able to repair a dent in your garage door. However, if the dent is too big or the Bondo does not seem to be holding, you may need to replace the entire section of the door.


Garage door dents can be repaired, but it is essential to take your time and do it properly. You may need a few tools and some help from a friend, but the results are worth it! If you have never tried repairing a garage door dent, now is the time to try it. We hope this article on how to repair dented garage door will help you.

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Rick Kelly

I am Rick. I grew up helping my dad with his handyman service. I learned a lot from him about how to fix things, and also about how to work hard and take care of business. These days, I'm still into fixing things- only now, I'm doing it for a living. I'm always looking for new ways to help people grow and develop. That's why I have created this blog to share all my experience and knowledge so that I can help people who are interested in DIY repair.

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