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What Causes Roof Shingles To Buckle & How To Fix It

Posted on May 18, 2024

roof shingles buckling

Your roof is one of the most critical components of your home, providing protection from the elements and ensuring your family’s safety and comfort. However, over time, even the most durable roofing systems can experience issues, such as the roof shingles buckling, which is a problem that isn’t only a cosmetic concern, but one that can also compromise your roof’s integrity and lead to expensive repairs if it’s not addressed. 

Buckled roof shingles not only look unattractive, but they also create entry points for water, pests, and other unwanted debris, potentially causing further damage to your home’s interior and structure. In this blog post, we’ll discuss what causes roof shingles to buckle and provide you with practical solutions on how to fix buckled roof shingles, ensuring your roof remains in top condition for years to come.

The Possible Reasons Why Your Roof Shingles Are Buckling

1. Rain or Moisture Exposure During A Roof Replacement 

If your roof was recently replaced, and the shingles were exposed to rain or moisture, such as dew, before things were sealed properly, it may have led to the roof shingles buckling. Excessive moisture can cause shingles to expand and contract unevenly, resulting in an unsightly, wavy appearance. Humid or rainy locations make this issue worse, as the shingles may not have an opportunity to fully dry and cure before the next rain storm in these areas.

2. Lack of Proper Attic Ventilation

Without the proper amount of attic ventilation, the chance of your roof shingles buckling increases. Adequate attic ventilation prevents moisture buildup and regulates the temperature in your attic space. When there’s poor ventilation, the trapped heat and moisture can cause the shingles to expand and contract irregularly, resulting in buckling. This issue is particularly common in older homes or those with inadequate ventilation systems, as well as homes located in humid or hot climates where temperature fluctuations are more extreme.

3. Trapped Moisture Under The Roofing System

Sometimes, if you notice buckling shingles on your roof, it could be a sign of a bigger problem, like trapped moisture. This moisture can sneak in through leaks, improperly installed roof flashing, or even caused by condensation build-up. If left unchecked, it can cause the shingles to buckle and lead to even more severe damage over time. And if that’s not enough, trapped moisture can also cause mold and mildew to grow, which can be harmful to the health of you and your family.

4. Structural Deficiency And Deck Movement 

If your home’s structure or roof deck is compromised, perhaps due to settling or age, it can cause shifts and movement that put stress on the shingles, leading to them buckling. This issue is often accompanied by other signs of structural distress, such as cracks in the walls or uneven floors, and may require more extensive repairs or even a full roof replacement to address the underlying problem. Additionally, if the decking is unevenly spaced or not properly secured during installation, it can create areas that are uneven across the roofline, leading to the roof shingles buckling over time. 

4. Wrinkled Roof Underlayment 

The underlayment is the protective layer beneath your shingles, acting as a barrier against moisture and providing additional support. If the underlayment is wrinkled or improperly installed, it can create an uneven surface that causes the shingles to buckle over time. A wrinkled underlayment can also trap moisture, increasing the number of roof shingles that are likely to buckle on your roof.

5. Multiple Layers of Shingles

Sometimes homeowners choose to install new shingles over an existing layer rather than removing the old ones to save time and money. However, this practice can lead to additional weight on the roof, and the uneven surface created by multiple layers can cause the shingles to warp and buckle. This issue is particularly common in older homes that have undergone multiple re-roofing projects without the previous layers of material being properly removed.

Related: 7 Signs You Need Shingle Roof Repair

Roof Shingles Buckling
Roof Shingles Buckling

How To Fix Buckled Roof Shingles 

1. Ensure The Proper Amount Of Attic Ventilation

Consider installing additional vents, such as ridge vents or gable vents, to improve air circulation and prevent moisture buildup. Proper ventilation not only helps prevent roof shingles from buckling, but it can also extend the lifespan of your roofing system, lower your energy costs, and improve the overall comfort and air quality inside your home.

2. Replace The Affected Shingles 

If you’ve noticed that some of your roof shingles have started buckling, the best solution is to have them replaced. This is especially true if the buckling is only in one area and not caused by a structural problem. To ensure that the job is done properly and to prevent any further damage, it’s best to hire a professional roofing contractor. They can also assess whether any additional repairs or reinforcements are necessary to prevent future buckling.

3. Correct The Wrinkled Underlayment 

If the shingles are buckling due to wrinkled underlayment it’s important to address the underlying issue by removing the affected shingles and fixing the underlayment before installing new shingles. Although this process can be time-consuming and labor-intensive, it’s necessary to ensure that the new shingles lay flat.

4. Address Moisture-Related Issues

This may involve fixing flashing, sealing gaps, or addressing condensation issues. Once the moisture problem is resolved, you can proceed with shingle repairs or replacements as needed and restore the integrity of your shingles and the rest of the roofing system.

5. Contact A Professional Roofer

It’s best to seek the help of a professional roofing contractor who can assess the situation accurately and recommend the most appropriate course of action. Depending on their evaluation, the repairs required could be extensive, or you may need to replace your entire roof to fix the issue permanently. So, it’s always better to be cautious and take proactive measures before the problem worsens and leads to more significant damage.

Final Thoughts 

Neglecting your roof shingles buckling can lead to more significant and expensive issues later on. By understanding the potential causes and implementing the appropriate solutions, you can restore your roof’s integrity and enjoy the peace of mind that comes with knowing that your family is safe and secure. So, don’t wait any longer, address the issue as soon as possible.

Expert Roofers In Hattiesburg Are Here To Help!

If you’re experiencing buckling roof shingles or any other roofing issues in the Hattiesburg area, contact B&A Roofing. Our team of experienced professionals is equipped with the knowledge and expertise to diagnose and address any roofing problem, from minor repairs to full replacements. We pride ourselves on providing top-notch roof repair services and using only the highest-quality materials to ensure your roof stays in good condition for years to come.
Inspect your roof with professional roofers and get the best solutions. Contact us today at (601) 520-3183 to speak with one of our experts and find out how we can help you!

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