wdgaragedoor Logo


DIY Steps on How to Repair Garage Door Dent

How to repair garage door dent

Have you noticed a dent in your garage door lately? It doesn’t look good, right? But don’t worry! Depending on the severity of the dent, you might be able to fix it yourself with a few DIY tricks. Learning how to repair garage door dent is an important skill that can save you time and money.

Here’s the brief on the repairing process: To fix a dented garage door, measure the damage and clean the area with warm water and detergent. Then, use a wooden block and mallet or gently hammer the dent from the inside out, avoiding further damage.

This blog will, in detail, guide you through the steps of repairing a garage door dent, along with answering some common questions you might have.

Why Do Garage Doors Get Dents?

Why Do Garage Doors Get Dents?


Garage doors face a lot in their daily lives. Maybe a rogue basketball went flying, a strong gust of wind pushed something against it, or there was an accidental bump with the lawnmower. Regardless of the reason, dents happen. The material of your garage door also plays a role. Steel doors are more prone to dents, while aluminum is more forgiving.

Can You Fix the Dent Yourself?

For minor to moderate dents, a DIY approach is possible. However, for large dents, deep creases, or damage to the frame, it’s best to call in a professional.

DIY Steps on How to Repair Garage Door Dent

Let’s check out the steps to repairing the dent:

What You’ll Need:

  • Detergent and water
  • Wooden block or flat piece of scrap wood
  • Rubber mallet (or regular mallet with a cloth wrapped around the head)
  • Sandpaper
  • Putty knife 
  • Patching material
  • Touch-up paint 

Step 1: Identify the Severity of the Damage

Before you start fixing anything, it’s important to see how bad the damage is on your garage door. Look closely at each dent and think about how big and deep they are. Smaller dents might be okay to fix yourself using things like wooden blocks or plungers, but bigger ones might need a professional to replace the whole panel to keep your garage door working well.

Step 2: Clean the Dent with Warm Water and Detergent

To clean the dent on your garage door, you’ll need some warm water and household detergent. Here’s what to do:

  • Mix the warm water and detergent in a bucket.
  • Dip a sponge or soft cloth into the mixture.
  • Gently scrub the dent and the area around it to get rid of any dirt or debris.
  • After cleaning, rinse the surface with clean water.
  • Finally, dry the area thoroughly with a towel or rag.

Remember, it’s really important to clean the dent well before you try to fix it so that any patching material or paint sticks properly.

Step 3: Use a Wooden Block and Mallet to Flatten the Dent

To fix a dent in your garage door, you can use a wooden block and a mallet. Here’s how:

  • First, clean the dent with warm water and household detergent.
  • Put the wooden block behind the dent.
  • Gently tap the mallet against the block to push out any dents or bumps in the metal.
  • Keep doing this until the damaged area looks flat. 
  • Smooth out any rough parts with sandpaper and paint over them if needed.

Remember, this method is best for small dents. If the dent is big or affects how the door works, you might need to get professional help or replace the whole panel.

You can try out another method where you can hammer out the dent gently. Let’s check out the following:

Hammer Out The Dent Gently

Gently hitting the dent with a hammer is another good way to fix a dented garage door. Here’s how to do it:

  • Tap the Dent Gently: Use a wooden block or rubber mallet to tap the dent from the inside out gently.
  • Start at the Edges: Begin hammering around the edges of the dent first before moving towards the center.
  • Flatten Raised Areas: If you find any raised areas, utilize a putty knife to flatten them out before continuing with the hammer.
  • Avoid Excessive Force: Be cautious not to apply too much force as it can cause further damage to the garage door panel.
  • Tap Until Even: Keep tapping until the dent is even and flush with the rest of the panel.

You can also think about using a special filling compound on the whole dented area to stop it from getting dented again. Remember, if your garage door has a lot of damage or you’re not sure what to do, it’s best to get help from a professional.

Let’s try out one more method.

Aluminum Foil Dent Repair Method

Aluminum Foil Dent Repair Method

For this, you’ll need: 


  • Start by washing the dent with warm water and household detergent.
  • Then, lay the aluminum strip over the dent, covering the whole dented part.
  • Evenly heat the foil.
  • After a minute, remove the foil. Take your compressed air and spray it on the area that was covered by the foil for 30 seconds. Spray it upside down.

Besides, check out our informative blog to find out the right answer to your question, “Can a damaged garage door be repaired?

Keep in Mind

Always remember the below facts while applying the DIY steps:

  • Safety First! Make sure the garage door is disengaged from the opener before you begin repairs.
  • Work in Warm Weather (Optional): Cold weather can make the metal in your garage door more brittle and prone to cracking. If possible, try to make your repairs on a warm day.
  • Quick Cover-Up (Optional): Need a temporary fix while you wait for a professional, or to hide a minor dent for cosmetic reasons? You can use a store-bought dent repair kit or try gently pushing the dent out from the inside with a plunger.

Visit our insightful blog to learn how to repair the rotted garage door bottom

When to Seek Professional Help

Let’s check out the situations where it’s best to call for help from pros.

Large or Deep Dents

If the dent in the garage door is too deep or has extensive damage that stops it from working right, it’s better to get help from professionals like We Do Garage Doors to fix or replace it. The same goes for dents in garage doors made of materials other than steel. Trying to fix it yourself could make it worse and stop the door from working right.

A trained technician will check how bad the dent is and decide if the door needs fixing or replacing. Deep dents can happen because of car crashes or bad weather, so it’s important to get them looked at.

Extensive Damage That Affects the Door’s Functionality

If the dent in your garage door is big enough to make it hard to open or close, it’s better to get professional help to fix it. Trying to fix it yourself could be risky and make things worse.

Structural Damage

If the dents have made the garage door weak or damaged its structure, you should call professionals to fix it. They know how to do it safely. Professionals have experience fixing all kinds of doors and have special tools to do the job right. 

Remember, ignoring severe damage could mean expensive repairs or getting a new door later on.

For efficient garage repair services in San Jose, choose We Do Garage Doors. We’re a family-owned business, licensed, bonded, and insured, offering no call-out fees. With a full team of highly-trained technicians, we provide fast and reliable services, including opener repair, spring repair, track repair, cable repair, roller repair, and hinge repair. Call us at (408) 634-9194 to schedule an appointment and get up to 15% off your first service.

Wrapping Up

In the end, learning how to repair a garage door dent can save you time and money while also ensuring the safety and appearance of your home. Whether you do it yourself or get help from a professional, it’s important to fix dents quickly. By following the steps in this guide, you can make your garage door work well and look good again. 


Why do garage doors get bumps?

Garage doors get bumps from external pressure like being hit by a car or object.

Can I fix small bumps in my garage door myself?

Absolutely! With a mallet, wood block, and some patience, you can often tackle minor dents yourself.

How do experts fix bumps in garage doors?

Experts fix bumps in garage doors by carefully assessing the damage and then using specialized equipment to push or pull the metal back into shape gently.

Can I cover up a bump in my garage door temporarily?

Yes, you can cover up a bump in your garage door temporarily with a dent repair kit or use adhesive-backed aluminum foil to smooth out the surface. However, it’s important to note that this is just a temporary solution and may not fully resolve the issue.

Are certain materials more likely to get bumps in garage doors?

Yes, materials like aluminum or thin steel are more prone to dents and bumps compared to thicker steel or wood due to their flexibility and susceptibility to impact. Additionally, environmental factors like extreme temperatures and high winds can increase the likelihood of bumps in garage doors.

What happens if I don’t fix a bump in my garage door?

If left unfixed, a bump in your garage door can worsen over time, potentially affecting its functionality and appearance. It may also compromise the security of your garage and increase the risk of further damage.

How long does it take to fix a bump in a garage door?

Fixing a bump in a garage door can take a few minutes to a few hours, depending on how bad it is and how you’re fixing it. Getting help from professionals might be faster, but it could need more time to schedule and finish.

Does weather affect fixing bumps in garage doors?

Ideally, fix dents in warm weather, as cold temperatures can make the metal brittle and more prone to cracking during the repair.

How much does it cost to fix a bump in a garage door?

The cost to fix a bump in a garage door varies depending on factors like the severity of the damage and the chosen repair method, but it typically ranges from $100 to $400 for DIY repairs, while professional assistance can cost $150 to $500 or more.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top