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  • Writer's pictureJustin Patel

Closing the Gap: How to Fix a Garage Door Gap on the Side

Updated: May 27

Are you tired of pesky gaps in your garage door letting in unwanted air and critters? It's not only an eyesore but a source of discomfort and security concern. We're here to give you the ultimate solution, so you don't have to deal with those gaps anymore!

No matter what type of property or garage door you have, gaps can happen for many reasons from improper installation to wear and tear. But don't worry; we've got you covered! In this blog, we will guide you on how to fix a garage door gap with easy-to-follow steps - whether you have a wooden, steel, or aluminium door.

Additionally, we understand the value of your time and money, so we've included some useful tips on preventing garage door gaps in the future. Our goal is to ensure that your garage door operates efficiently and effectively for years to come.

Be sure to finish reading this blog and achieve a seamless solution for your garage door gap.

Understanding the Garage Door Gap

When it comes to garage doors, a gap between the door and the ground can be a cause for concern. Not only does it undermine the overall security of your garage and home, but it can also let in dirt, debris, and unwanted pests. In this section, we'll take a closer look at the garage door gap, and how to understand it.

Why Does a Garage Door Gap Occur?

There are several factors that can cause a gap between your garage door and the ground. The most common reasons include an uneven floor or foundation, worn out weatherstripping, misaligned tracks, and damaged rollers. Also, over time, the weight of the garage door can lead to it sagging.

Measuring the Garage Door Gap

The first step is to measure the gap to determine the extent of the problem. For this, you will need a ruler or a tape measure. Measure the gap at several points along the bottom of the garage door. Note the highest point of the gap, as well as the overall width.

Determining the Ideal Height

Once you have measured the gap, you can determine the ideal height for the garage door. A properly installed garage door should sit flush against the ground and create a weather-tight seal. Ideally, there should not be any gap between the door and the ground although ensure that it does not scrape on the floor. Small gaps can be allowed to allow for slight unevenness in the floor or to account for the upward motion of the door.

Adjusting the Garage Door Gap

To fix the gap between your garage door and the ground, there are several adjustments that you can make. You can adjust the tracks, replace the rollers, realign the door opener, or replace the weatherstripping. In some cases, it might be necessary to install a new garage door if the problem is too severe.

💡 key Takeaway: Understanding the garage door gap is crucial to fixing it. There are several reasons why it occurs and adjustments that can be made to fix the problem. A properly installed garage door should not have any gap between the door and the ground, although a small amount is allowed to account for floor unevenness or door motion.

Tools and Materials Required to Fix a Garage Door Gap

To successfully fix a garage door gap, you will need specific tools and materials. This section will cover everything you need to ensure that you have everything required for a successful fix.

Tools Required:

1. Measuring Tape

You will need a measuring tape to measure the size of the gap and have an accurate understanding of how much material you require.

2. Saw

A saw will be required to trim excess material from the gap and ensure it is even and fits correctly.

3. Safety Glasses

Since sawing produces a lot of dust and debris, it's crucial to wear safety glasses to protect your eyes.

4. Screwdriver

A standard screwdriver is essential to remove and also reinstall the garage door gap seal.

Materials Required:

1. PVC Stop Molding

PVC stop moulding is an essential material required to fill the gap and contribute to insulation.

2. Sealant

A good sealant creates a waterproof and airtight barrier to keep the garage free from different elements, including water and pests.

3. Contact Cement

You will require contact cement to affix the PVC stop moulding against the garage door.

💡 key Takeaway: Before starting, ensure you have all the necessary tools and materials for a successful garage door gap fix.

Assessing the Gap Size and Location

Assessing the gap size and location of a garage door is a crucial step in fixing it. The size and location of the gap will help you determine the cause of the problem and the appropriate solution to fix it.

Here are some important things to consider when assessing the gap size and location:

1. Measure the Gap Size

To accurately assess the size of the gap, use a measuring tape to measure both the height and length of the gap. This will help you determine whether the gap is within the acceptable range or if it requires immediate attention.

2. Analyze the Gap Location

It's essential to identify the precise location of the gap. Is it on the sides of the door or at the top and bottom? Knowing where the gap is located will aid in identifying the cause of the problem.

3. Check for Unevenness

Check whether there is an unevenness on the door. Slightly lifting the door and then releasing it will allow you to check whether it is staying in its place or moving back. A door that moves back shows that there is a problem with balance and requires adjusting the spring tension.

4. Look for Obstructions

Obstructions on tracks can obstruct the door from closing completely and cause gaps. Separating, cleaning, or adjusting the tracks will fix the problem.

5. Inspect the Weatherstripping

Weatherstripping helps to keep out drafts, hence, if it is damaged or cracked, it may need to be replaced as it causes the gap.

By identifying the root cause of the gap, you can choose the right solution to fix the problem. It could be a simple DIY fix or a more complex one that requires professional help.

💡 key Takeaway: Assessing the size and location of a garage door gap is an essential step in identifying the root cause of the problem and determining the appropriate solution to fix it.

Adjusting the Garage Door Track

Having a garage door gap can be a frustrating issue to deal with, but it's a common problem that homeowners face. The good news is that fixing a garage door gap can often be done by making adjustments to the garage door track. Here's how to do it:

1. Check the alignment of the track:

The first step to fixing a garage door gap is to check if the garage door track is misaligned. Use a level to see if the track is parallel to the ground. If not, loosen the bolts holding the track to the wall and adjust it until it's level.

2. Check the spacing between the track and door:

Another cause of garage door gaps is the spacing between the track and the door. Use a piece of wood or a screwdriver to check for the gap between the door and the track. If the gap is too big, you'll need to move the track closer to the door.

3. Tighten the bolts:

Once you've made the necessary adjustments, it's important to make sure you tighten all the bolts. Loose bolts can cause the track to become misaligned again, leading to a gap in the garage door.

It's important to note that adjusting the garage door track can be a complex task, and if you're not comfortable doing it yourself, it's best to call a professional. Larry Myers Garage Doors provides expert garage door repair services, ensuring that your door is properly aligned and functions smoothly.

💡 key Takeaway: Adjusting the garage door track can help fix garage door gaps. Ensure the track is aligned, the spacing between the track and door is correct, and tighten the bolts to prevent it from becoming misaligned.

Tightening Loose or Worn Hinges

One common reason for gaps in your garage door is a loose or worn hinge. Over time, the hinge can become worn out, and the screws that hold it in place can loosen, causing the door to sag and create gaps. Tightening the hinges can help solve the problem.

First, check the hinges for any signs of wear and tear. If they are visibly worn, it may be time to replace them. If they look okay, tighten the screws and check the door to see if the gap has decreased. If the gap is still present, you can try replacing the screws with longer ones to create a more secure hold.

It's important to be careful when working with the hinge screws, as overtightening them can strip the holes and cause even more problems. Use a socket wrench or adjustable wrench to tighten them just enough to secure the hinge, but not so much that you risk damaging the door.

If you are uncertain about your ability to tighten the hinge screws yourself, it's best to call in a professional garage door technician like Larry Myers Garage Doors. They have the knowledge and tools necessary to properly tighten or replace hinges and fix any other issues that may be causing gaps in your garage door.

💡 key Takeaway: Tightening loose or worn hinges can help decrease gaps in your garage door, but be careful not to overtighten the screws and risk damaging the door. Call a professional garage door technician if needed.

Installing Weatherstripping and Sealant

Installing weatherstripping and sealant is an important step in fixing a garage door gap. By filling any gaps or cracks in the garage door frame, weatherstripping and sealant help to keep out unwanted moisture, dust, and pests. Here's how to do it:

1. Clean the area

It is important to clean the area where you will be applying the weatherstripping and sealant. Use a damp cloth to wipe away any dirt, debris or residue that has accumulated on the garage door frame.

2. Measure the length

Measure the length of the garage door opening and cut the weatherstripping to the required length. Make sure to add an extra inch on either side to ensure that it covers the entire gap.

3. Apply weatherstripping

Peel off the adhesive backing of the weatherstripping and slowly press it into place. Make sure to apply pressure with your fingers to ensure it sticks properly to the frame.

4. Check sealant

Ensure that the sealant you purchase is appropriate for the material of your garage door. Apply the sealant evenly in a continuous line along the bottom of the door. Use a caulking gun to make it easier to apply the sealant.

5. Check sealant dry time

Allow the sealant to dry for the recommended time before closing the garage door.

💡 key Takeaway: Installing weatherstripping and sealant is an important step in fixing a garage door gap. Clean the area first, then measure the length of the weatherstripping and apply it to the door frame with pressure. Apply sealant evenly along the bottom and allow it to dry completely before closing the garage door.

Filling Larger Gaps

If the gap under your garage door is too large for weather stripping to be installed, don't worry! There are still solutions that can help fill the gap. Here are some options:

1. Replace the bottom seal:

If the bottom seal of your garage door is old or damaged, replacing it can help decrease the gap. Choose a heavy-duty bottom seal that fits the size of your garage door.

2. Install a threshold seal:

A threshold seal can help seal the gap between the garage door and the ground. It also acts as a barrier against water and pests. Choose a threshold seal that fits the width and length of your garage door.

3. Weatherstrip the sides of the door:

Use weatherstripping to cover the gap between the sides of the garage door and the door frame. This will help reduce the amount of air and moisture that enters your garage.

4. Add a garage door sweep:

A garage door sweep attaches to the bottom of your garage door and helps to seal any remaining gap. Choose a garage door sweep that fits the width of your garage door.

💡 key Takeaway: Don't let a larger gap under your garage door cause problems for your home. Replace the bottom seal, install a threshold seal, weatherstrip the sides of the door, or add a garage door sweep to help fill the gap and keep your garage protected from the elements.

Maintaining the Garage Door to Prevent Future Gaps

Regular maintenance of your garage door is essential to prevent future gaps and ensure its longevity.

Here are some tips to help you maintain your garage door:

1. Lubricate the Moving Parts:

The moving parts of your garage door need regular lubrication to reduce friction and prevent wear and tear. Use a silicone-based lubricant to lubricate the metal parts at least once a year to keep them functioning smoothly.

2. Check and Tighten Hardware:

The hardware holding your garage door in place can become loose over time. Check the nuts and bolts and tighten them if needed to avoid gaps.

3. Test the Balance of the Door:

An imbalanced garage door can cause gaps to occur. Disconnect the automatic opener and manually operate the door. If the door is difficult to operate or doesn't stay open at any point, it may be unbalanced. Call a professional to adjust the balance and align the tracks.

4. Inspect the Weatherstripping:

The weatherstripping on your garage door helps to seal the gaps and prevent weather elements from seeping in. Regularly check the weatherstripping and replace it if it is worn out or damaged.

💡 key Takeaway: Regular maintenance of your garage door can prevent gaps in the future and extend its lifespan.


Gaps in your garage door can be a significant source of discomfort and security concern. They allow unwanted air and critters to enter, undermining the overall integrity of your garage. By following our expert guidance and easy-to-follow steps, you can successfully close the gap and restore the functionality and aesthetics of your garage door. We understand the frustration that comes with dealing with gaps, and our goal is to ensure that you achieve a seamless solution for your garage door.

Remember, a properly installed garage door should sit flush against the ground, creating a weather-tight seal without any gaps. By understanding the causes of gaps, assessing their size and location, and making necessary adjustments, such as adjusting the garage door track and tightening loose or worn hinges, you can effectively fix the gap and restore the functionality and security of your garage.


What should I do if my garage door spring is broken?

If your garage door spring is broken, it's important to refrain from attempting to fix it yourself as it can be dangerous. Contact a professional garage door repair service to assess the situation and replace the broken spring. They have the expertise and proper tools to safely handle the repair, ensuring your garage door operates smoothly and securely.

What are some tips for fixing a garage door gap?

When faced with a garage door gap, there are several tips you can follow to address the issue. Start by examining the door tracks for any misalignment and adjust them if necessary. Check the weatherstripping along the sides and bottom of the door and replace any worn-out or damaged sections. Additionally, tightening loose hinges and ensuring the garage door track is properly aligned can help reduce the gap.

What should I do if my garage door opener doesn't work?

If your garage door opener is not functioning, begin by checking the power source and ensuring it is securely connected. Replace the batteries in the remote control or keypad, if applicable. If these steps don't resolve the issue, inspect the safety sensors to ensure they are aligned and clean. If the problem persists, it's recommended to contact a professional garage door technician to diagnose and repair the opener.

How do I fix a garage door that won't close all the way?

When dealing with a garage door that doesn't fully close, start by examining the close-limit switch and adjusting it as needed. Inspect the tracks for any obstructions or debris that may be preventing smooth operation and remove them. Lubricate the moving parts, including hinges and rollers, to ensure they function properly. If these troubleshooting steps don't resolve the issue, it's advisable to seek professional assistance to avoid further complications.

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