How to fix dent in garage door?

How to fix dent in garage door?


Garage doors are prone to dents due to various reasons such as accidental impact, extreme weather conditions, or even natural wear and tear. These dents not only affect the aesthetic appeal of the door but can also compromise its functionality. However, fixing a dent in a garage door is not as challenging as it may seem. With the right tools and techniques, you can restore your garage door to its original condition. In this article, we will explore how to fix a dent in a garage door effectively.

Assessing the Damage

Before attempting to fix the dent, it is essential to assess the extent of the damage. Minor dents can often be repaired using simple DIY methods, while larger or more severe dents may require professional intervention. Inspect the dent closely to determine its size, depth, and location. This assessment will help you decide on the appropriate course of action.

Materials and Tools

Materials used:
– Aluminum foil
– Compressed air or hairdryer
– Boiling water
– Plunger
– Rubber mallet
– Wooden block
– Auto body filler
– Sandpaper
– Paint

Tools required:
– Safety gloves
– Safety goggles
– Clean cloth
– Paintbrushes
– Putty knife
– Sanding block
– Paint scraper
– Paint sprayer or roller

Fixing a Minor Dent

For minor dents, you can try the following methods:

1. Aluminum foil and compressed air/hairdryer: Place a piece of aluminum foil over the dent and heat it using compressed air or a hairdryer. The sudden change in temperature can cause the dent to pop out.

2. Boiling water: Boil a pot of water and pour it over the dent. The heat will cause the metal to expand, allowing the dent to pop out. Use a plunger to push the dent from the inside if necessary.

3. Plunger: Apply a generous amount of water or lubricant to the dent and use a plunger to create suction. Pull the plunger forcefully to pop out the dent.

Repairing a Larger Dent

For larger dents, follow these steps:

1. Rubber mallet and wooden block: Place a wooden block on the inside of the door, directly behind the dent. Use a rubber mallet to gently tap the dent from the outside. Gradually increase the force until the dent is pushed out.

2. Auto body filler: Clean the dent and surrounding area thoroughly. Mix the auto body filler according to the manufacturer’s instructions and apply it to the dent. Use a putty knife to spread the filler evenly and let it dry completely.

3. Sanding and painting: Once the filler is dry, use sandpaper to smooth out any rough edges. Prime the repaired area and apply a fresh coat of paint that matches the color of your garage door.


Fixing a dent in a garage door is a task that can be accomplished with the right tools and techniques. Assessing the damage, gathering the necessary materials, and following the appropriate methods can help restore your garage door’s appearance and functionality. However, it is important to remember that larger or more severe dents may require professional assistance. Always prioritize safety and consult a professional if you are unsure about the repair process.