How to Fix a Garage Roof

Are you dealing with a leaky garage roof? If so, it’s important to have it fixed immediately to avoid costly and complicated damage being done in the near future. Repairing your own garage roof can be tricky and time-consuming, but knowing the basics can help make the job go more smoothly.

How to Fix a Garage Roof

In this post we will discuss what materials are needed for repairing a leaking garage roof as well as specific steps you can take that will help ensure a reliable fix. Read on for helpful tips in tackling your leaky garage roof!

If you’ve noticed your garage roof is starting to show signs of wear and tear, you may be considering repairing it yourself. Keeping a garage rooftop in good working order can help preserve the contents inside from damage caused by the elements.

This makes sense from both practicality and money-saving perspectives, as well fixing a damaged roof prior to more extensive damage taking place can save major repairs down the line. Here, we’ll go through step-by-step on how to fix a garage roof!

Summary: Garage roofs are exposed to the elements and require regular maintenance to remain in good condition. The most common solution to fix a garage roof is to replace any damaged shingles or panels with new ones. Additionally, it is important to inspect for any areas of water or air leakage, seal any gaps and cracks with caulk, apply a waterproof sealant and inspect the flashing.

Why Do You Need to Fix a Garage Roof?

There can be many problems if you do not fix a garage roof. Such as:

1. Excess Moisture

One of the main issues of a leaking or damaged garage roof is the accumulation of excess moisture. This can lead to mold and mildew build-up, causing a bad smell in your garage and health problems for those who are using it regularly.

2. Structural Damage

If the damage to the garage roof is not addressed it can cause serious structural damage due to the weakened roof. This can include shingles or tiles being blown off, water damage to walls and ceilings, and even rot to the main structure of your garage.

3. Unsightly Appearance

An old, damaged garage roof looks unsightly and can affect the value of your property if it is not fixed. It also can be an eyesore for your neighbors. So if you do not want to be the subject of your neighbors’ complaints, it is important to fix any issues with your garage roof.

Assess the Damage of Garage Roof

It is important to take care of your garage roof and fix any damage or leakage as soon as possible, so that you can keep these problems from arising. How do you go about fixing a garage roof? Read on to find out!

How to Fix a Garage Roof in 10 Easy Steps

Step 1: Assess the Damage

The first step in fixing a garage roof is to assess the damage. Check for any holes, tears, broken shingles, or other signs of wear and tear. If you have an old roof that may be nearing its end life cycle, it might be time to consider replacing it entirely.

Step 2: Repair Any Damage

Once you’ve assessed the damage and determined that repair is a viable option, use appropriate materials (tar or roofing cement) to fill in any holes, patch up tears, and fix broken shingles. Also make sure to replace any missing nails or screws to ensure the roof is securely fastened.

Step 3: Apply an Underlayment

Before re-shingling, you must apply an underlayment. This will provide a base layer of protection between your shingles and the decking beneath them. Various types of synthetic rubber are available for underlayment, and they should be installed according to the manufacturer’s instructions.

Step 4: Install New Shingles

Once the underlayment has been applied, you can begin installing new shingles. Start at the bottom corner of your roof and work your way up using a nail gun or hammer for fastening. Make sure to overlap each shingle, as this will provide extra protection and help prevent leaks.

Repair the Damage of Garage Roof

Step 5: Apply a Sealant

Once the new shingles are in place, apply a sealant to ensure they’re properly secured. A good sealant should be able to withstand extreme weather conditions, so make sure to choose a high-quality product.

Step 6: Check for Leaks

After the sealant has been applied, it’s time to check for leaks. Use a garden hose to spray down your roof and look out for any water seeping in through the shingles or other areas. If you do find a leak, go back and re-seal it with an appropriate sealant.

Step 7: Re-Seal Any Old Areas

If you have an older roof, it’s important to make sure any areas where the shingles overlap are properly sealed. Use a high-quality sealant and caulk around each area in order to prevent leaks. It will also help to put a protective coating over the entire roof.

Step 8: Install Flashings

Flashings are metal coverings that are installed over the joints between different sections of your roof. They protect these areas from moisture and other elements, so make sure to install them at any transition points or where two surfaces meet.

Step 9: Inspect the Roof

After all the repairs have been made, it’s time to do a final inspection of your roof. Look out for any missed areas that need to be repaired, and make sure everything is properly sealed and secure. This will make sure your roof will remain in good condition for many years to come.

Step 10: Maintenance

Finally, to ensure your garage roof lasts as long as possible, regular maintenance is key. Make sure to inspect the roof at least once a year and re-seal any areas that may have become damaged or worn over time. Doing so will help you avoid costly repairs in the future.

Apply an Underlayment on the Garage Roof

By following these 10 easy steps, you can quickly and easily fix a garage roof in no time. Just remember to take your time and make sure everything is done correctly, and you’ll have a secure and reliable roof for many years to come.

Frequently Asked Questions

What Can I Do If I Notice Damage On My Garage Roof?

If you notice damage on your garage roof, it’s important to take action quickly. First, determine the extent of the damage and whether it can be repaired or if the entire roof needs to be replaced. 

If you can repair the damage, begin by removing any debris from the roof and patching any holes with roofing material. Make sure to let the patch dry before applying any sealant or other finishing materials. If the damage is extensive, you may need to contact a professional roofer for advice on how best to proceed.

How Much Does It Cost To Replace A Garage Roof?

The cost of replacing a garage roof varies depending on the size and materials used. Generally, you can expect to pay anywhere from $2,000 to $10,000. If you are replacing the entire roof, some of the cost may be covered by your homeowner’s insurance policy. However, it is important to check with your insurer beforehand to find out what is covered.

What Are The Benefits Of Replacing My Garage Roof?

Replacing your garage roof can offer several benefits, including improved aesthetics, increased energy efficiency, better protection for your belongings and lower insurance rates. A new roof can also improve the value of your home.

Also, depending on the materials used, replacing your roof could provide better protection from extreme weather conditions, such as heavy rains and high winds.

Apply a Sealant to Secure Garage Roof

What Are The Signs That I Need To Replace My Garage Roof?

If you notice any of these signs, it may be time to replace your garage roof: cracked or curling shingles, missing shingles, visible patches or holes in the roof, standing water on the roof after a rainstorm, and signs of mold or mildew growth. It’s also important to inspect your roof periodically for signs of wear and tear.

If you notice anything out of the ordinary, contact a professional roofer right away.

How Long Does It Take To Replace A Garage Roof?

The time it takes to replace a garage roof depends on the size of the roof and the materials used. Generally, you can expect the process to take several days or more depending on the complexity of the job. It’s important to make sure that you are working with an experienced contractor who is familiar with the process.

Make sure they are aware of any time constraints you may have so that they can complete the job in a timely manner.


We hope this guide on how to fix a garage roof has been helpful. It’s important to take the time and effort to properly inspect and repair any damage to your garage roof in order to prevent further issues. Repairing a garage roof can be a daunting task, but with the right supplies, preparation, and instructions you can do it successfully.

If you are still unsure of how to proceed with fixing your roof, it is best to contact a professional roofer who can provide advice on the best course of action for your particular situation.

If you have a garage roof that’s starting to show signs of wear and tear, it’s important to take action before the problem gets worse. By following these simple steps, you can fix your garage roof and keep it in good condition for many years to come.

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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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