Curling shingles are a common problem that many homeowners face with their roofs. This issue occurs when the edges of the shingles start to curl upwards, creating a concave shape. Curling shingles not only affect a home’s aesthetic appeal but can also lead to more significant issues, such as roof leaks and the need for a complete roof replacement.
When curling occurs, it compromises the functionality of the shingles and exposes the underlying roof deck to the elements. Curling shingles can result in roof leaks and damage to the home’s interior. A roof leak can lead to costly repairs and create an environment for mold growth, which can negatively impact air quality and pose health risks to inhabitants.

Curling Shingles Causes
The causes of curling shingles can vary, but some of the main culprits include the age of the roofing materials, improper installation, and inadequate attic ventilation. Regardless of the cause, addressing curling shingles is crucial to prevent more extensive damage and maintain the roof’s integrity. Here are some common reasons why your roof shingles may be curling:
Poor Ventilation
Proper ventilation is crucial in maintaining the integrity of your roof and preventing issues like curling shingles. When a roof lacks adequate ventilation, excess moisture builds up in the attic, leading to numerous problems.
One of the main consequences of poor ventilation is moisture buildup, which creates the perfect conditions for mold growth. Mold damages your roof and poses significant health risks to inhabitants. The spores released by mold can cause respiratory issues, allergies, and even severe infections.
In addition to mold growth, poor roof ventilation can lead to buckling shingles and compromised air quality. Buckling shingles occur when excessive moisture causes the underlying roof decking to warp, resulting in a concave shape. Buckling shingles can compromise the functional shape of the roof and may eventually cause leaks.
Furthermore, the lack of proper airflow in an inadequately ventilated roof can negatively impact the overall air quality in your home. Excess moisture and stagnant air create an environment where pollutants such as dust, allergens, and volatile organic compounds can accumulate, affecting the health and comfort of your household.
On the other hand, a well-ventilated attic can help circulate excess moisture and maintain a healthy roof. By allowing fresh air to flow through the attic, we effectively expel moisture, preventing the absorption of moisture by the shingles. Better ventilation helps to preserve their integrity and extend their lifespan.
Re-Roof or Roof Over
While it may seem like a convenient shortcut, installing a new roof over an old one is generally not recommended. While it is possible to do so if the old roof is in good condition, it can lead to further damage and hidden problems down the line.
One of the major issues with installing a new roof over an old one is that it can be considered a code violation in some areas. Building codes typically require removing the old roof before installing a new one, as it allows for proper inspection and identification of any underlying issues.
Another problem with this approach is that the new shingles may need to seal appropriately over the old ones. This can lead to gaps and vulnerabilities in the roof, making it more susceptible to leaks, curling shingles, and other damage. The lack of a solid foundation can also void the warranty on the new roof, leaving you responsible for any repairs or replacements.
By removing the old roof before installing a new one, roofing professionals can thoroughly inspect the roof deck, identify any structural issues, and ensure proper installation of the new shingles. This helps to avoid future problems and ensures the longevity and effectiveness of the new roof.
Improper Installation
Improper installation of shingles is one of the common reasons for curling shingles on a roof. By not installing shingles correctly, we can lead to a variety of issues, including premature wear and damage. Understanding the importance of proper installation is essential to avoid these problems.
Choosing a licensed contractor is crucial when it comes to shingle installation. Licensed contractors have the necessary skills, training, and knowledge to install shingles correctly, reducing the risk of curling. They are also aware of local building codes and adhere to manufacturer specifications during installation.
Following manufacturer specifications is another crucial aspect of proper installation. Manufacturers provide specific instructions on how to install their shingles for optimal performance. Deviating from these guidelines can result in the shingles not sealing correctly, leading to curling and other issues.
Additionally, the number and placement of nails per shingle play a significant role in preventing curling. The correct number of nails specified by the manufacturer should be used to ensure the shingles are securely fastened to the roof. Improper nail placement or too few nails can cause the shingles to lift and curl over time.
It is crucial to prioritize proper installation to avoid the frustration and potential damage caused by curling shingles. Hiring a licensed contractor, following manufacturer specifications, and ensuring the correct number and placement of nails per shingle are all critical steps in maintaining the integrity of your roof.
Sub-Standard Materials
Sub-standard materials are a common culprit behind curling shingles and other roof-related issues. When low-quality materials are used in roofing projects, it dramatically increases the risk of complications and premature damage.
Using sub-standard materials dramatically reduces the lifespan and durability of the roof. These materials may not have the necessary properties to withstand the harsh elements and weather conditions, leading to premature wear and tear. This can manifest as curling shingles, as the materials become susceptible to moisture absorption and poor adhesion.
One of the risks associated with hiring unregistered contractors is using defective materials. To save costs, these contractors may cut corners by opting for cheaper, lesser-quality materials. Low-quality materials compromise the roof’s structural integrity and increase the likelihood of curling shingles. The use of defective materials can also result in leaks and other major issues that require expensive repairs in the future.
Starting with high-grade materials recommended by professional contractors is essential to prevent future problems and save money in the long run. High-quality materials are specifically designed to withstand the harshest weather conditions, ensuring a longer lifespan for the roof. These materials also have better adhesive properties, reducing the risk of curling shingles and other related issues.
In summary, using sub-standard materials significantly contributes to the problem of curling shingles. Hiring unregistered contractors and using defective materials puts the roof’s integrity at risk and can lead to costly repairs. Investing in high-grade materials recommended by professional contractors is crucial to prevent future issues, increase durability, and save money in the long term.
Shingle Age
Shingle age plays a significant role in curling shingles on a roof. As shingles age, typically around the 20-year mark, they deteriorate and lose their functional shape. This deterioration can result in curling and other forms of damage.
The limited lifespan of shingles is a natural occurrence due to exposure to various weather conditions over time. As shingles age, they become more susceptible to the elements, such as moisture absorption and temperature fluctuations. Aging can cause them to warp, curl, or even develop a concave shape.
Curling shingles can cause concern as they can compromise the roof’s integrity. In many cases, curling shingles lead to the need for roof repairs or complete replacement. When shingles curl, they no longer provide adequate protection against water intrusion, which can result in leaks and further damage to the roof deck and interior of the home.
Regular roof inspections by experienced roofers can help identify curling shingles caused by age and determine if repairs or a replacement are necessary. By promptly addressing curling shingles, homeowners can mitigate the risk of more extensive damage and prolong the roof’s lifespan.
Homeowners need to understand the limited lifespan of shingles and the potential for curling as they approach the end of their life cycle. By being proactive and seeking professional guidance, homeowners can address curling shingles and make informed decisions about necessary repairs or roof replacement.

Problems Caused by Curling Shingles
Curling shingles can create problems for your roof, compromising its integrity and longevity. When shingles curl, they no longer provide a tight seal against the elements, allowing water to infiltrate and potentially cause roof leaks. These leaks can damage the roof deck, insulation, and interior of your home.
In addition to roof leaks, curling shingles can contribute to mold growth in your home. Moisture can become trapped underneath the curled shingles, creating the perfect conditions for mold spores to thrive. Mold growth not only poses a health risk to you and your family but can also cause structural damage to your home.
Furthermore, curling shingles can negatively impact attic ventilation. When shingles curl, they no longer sit flat against the roof deck, compromising the overall airflow in the attic. Proper attic ventilation is essential for removing excess moisture and regulating temperature, preventing the buildup of moisture that can lead to mold growth and deterioration of your roofing materials.
Addressing curling shingles is crucial in preserving the integrity of your roof. Regular roof inspections by experienced professionals can help identify curling shingles early on and determine the best course of action, whether repair or replacement. By addressing curling shingles promptly, you can protect your home from roof leaks, mold growth, and compromised attic ventilation, ensuring that your roof remains in optimal condition for years to come.

Preventing Curling Shingles on Your Roof
Curling shingles have aesthetic implications and can lead to significant issues such as roof leaks and mold growth. However, you can take steps to prevent curling shingles and maintain the integrity of your roof. From proper installation to addressing ventilation issues, addressing these common reasons for curling shingles can help prolong the lifespan and functionality of your roof. By working with experienced roofers, using high-quality materials, and ensuring proper ventilation, you can protect your roof from the damaging effects of curling shingles. Regular roof inspections and maintenance also play a crucial role in identifying and addressing potential issues early on. So don’t ignore the signs of curling shingles – take proactive measures to keep your roof in optimal condition.
Remove Debris
After a storm, removing debris from your roof is crucial to maintain its integrity and prevent further damage. Here are the steps to effectively clean your roof:
1. Inspect the roof: Begin by carefully examining the entire surface of the roof. Look out for twigs, leaves, or broken shingles that may have been dislodged during the storm. Identifying these areas will help you prioritize the cleaning process.
2. Clear off debris: Safely remove any debris you found during the inspection. Utilize tools such as a broom or a leaf blower to clear the roof surface effectively. Be cautious not to use excessive force or damage the roofing materials.
3. Seek professional assistance: If you notice any significant damage, such as loose or missing shingles, it is recommended to contact a professional roofing contractor. They have the expertise and equipment to navigate the roof and perform necessary cleaning or repairs safely.
4. Regular maintenance: To prevent future debris accumulation, trim overhanging branches and regularly clean your gutters, as clogged gutters can contribute to roof damage.
By promptly removing debris from your roof, you can maintain its functionality and prolong its lifespan. Safety should always be a priority, so if you need help accessing your roof or are uncomfortable with the cleaning process, it’s best to leave it in the hands of a professional roofing contractor.
Get Routine Roof Inspections
Routine roof inspections are crucial for maintaining a healthy and functional roof. Regularly inspecting your roof can identify and address issues early on, saving you time, money, and stress in the long run. One common issue that can be detected during these inspections is curled shingles.
Curled shingles are a sign of roof damage and require immediate attention. They can result from various factors, such as improper installation, poor ventilation, or exposure to harsh weather conditions. Curled shingles can lead to many problems, including roof leaks and mold growth, if left unattended.
To ensure accurate and precise inspections, consider using precision drone roof inspections. Drones equipped with high-resolution cameras can capture detailed images and measurements of your roof, comprehensively assessing its condition. This technology is particularly beneficial in evaluating damage caused by storms, as it allows for a close examination of the entire roof without physically climbing or accessing it.
Use Licensed Contractors for Repairs
When repairing or replacing your roof, it is essential to hire licensed contractors. Choosing amateur roofing contractors may seem like a cost-effective option, but it can lead to further damages and potential risks to your property.
Licensed roofing contractors have the expertise and experience to handle all roof repairs. They undergo rigorous training and are well-versed in industry standards and best practices. Certifications will help ensure the repairs are done correctly, and all safety regulations are followed.
By choosing certified professionals, you can know that your roof is in capable hands. Licensed contractors have a reputation to maintain and will strive to provide you with the highest quality of workmanship. They have access to the latest tools, equipment, and materials, ensuring that your roof is repaired using top-notch products.
Hiring amateur contractors can result in subpar workmanship, leading to more damage in the long run. Roof damages caused by poor workmanship can result in costly repairs and even compromise the structural integrity of your property. Additionally, warranties or insurance may not cover amateur repairs, leaving you responsible for any future issues.
Investing in the services of licensed roofing contractors is a wise decision that guarantees the longevity and durability of your roof. Don’t take risks with your property – always opt for professionals with the necessary skills, knowledge, and credentials to handle your roof repairs efficiently and effectively.
Replace your Roof When Necessary
Replacing your roof when necessary is crucial for maintaining the integrity and safety of your home. Regular asphalt shingles typically have a lifespan of 15 to 20 years, while high-end metal shingles can last over a century. Understanding the lifespan of your roof is essential in determining when it’s time for a replacement.
Improper installation of shingles can lead to various issues, including curled shingles. When shingles start to curl, it indicates a problem with the roof, such as poor ventilation or excess moisture. Reproving curled shingles without addressing the underlying issue can lead to further damage and costly repairs.
Properly replacing your roof requires the expertise of professional roofers. They have the knowledge and experience to ensure a flawless installation, preventing future issues. Licensed contractors also have access to high-quality roofing materials and the latest tools, ensuring the longevity and functionality of your new roof.
By replacing your roof when necessary and choosing experienced roofers, you can protect your home from the risks of improper installation and further damage caused by curled shingles. It’s essential to prioritize the maintenance and replacement of your roof to maintain the structural integrity of your property and avoid potential problems in the future.
Do Curled Shingles Need to Be Replaced?
Curled shingles on your roof can be a worrisome sight. You may wonder if they need to be replaced or if they can be repaired. The answer to this question depends on several factors, including the severity of the damage, the number of curled shingles, and the underlying cause.
In some cases, if only a few shingles are curled, and the damage is minimal, they can be repaired. However, if a significant portion of your roof is affected or the damage is severe, a roof replacement might be necessary. It’s essential to assess the extent of the curling and determine if it poses a risk to the overall integrity of your roof.
Leaky roofs can cause significant damage if addressed. Water intrusion can lead to mold growth, structural deterioration, and compromised air quality, making it crucial to address roofing issues promptly. Hiring a reputable roofing contractor for your roof replacement is essential to ensure the best outcome. They have the expertise to assess the condition of your roof, identify the underlying cause of the curling shingles, and provide the most suitable solution.
In conclusion, while minor curling of shingles can sometimes be repaired, severe damage and a large number of curled shingles may require a complete roof replacement. Consulting with a professional roofing contractor will help determine the best course of action to maintain the safety and longevity of your home.
Final Takeaways
Curling shingles can indicate underlying issues with your roof and should not be ignored. While minor curling can sometimes be repaired, severe damage or widespread curling may require a roof replacement. Leaky roofs can lead to mold growth, structural deterioration, and compromised air quality, making it crucial to address roofing issues promptly. Hiring a reputable roofing contractor ensures proper assessment and appropriate solutions for your roof replacement.
Routine roof inspections by licensed contractors are essential for identifying and addressing curling shingles early on. These inspections can help catch any underlying problems and prevent them from escalating into major issues. Regular inspections also allow for timely repairs and replacements, ultimately extending the lifespan of your roof.
Preventing curling shingles can be achieved through proper maintenance and care. Clearing debris from the roof, ensuring adequate ventilation, and addressing any moisture issues are essential steps. Debris can trap moisture and affect the adhesive strips on the shingles, leading to curling. Good ventilation helps to regulate temperature and prevent excess moisture buildup, which can also contribute to curling.
In conclusion, routine roof inspections by licensed contractors, timely repairs, and proper ventilation are crucial to preventing and addressing curling shingles. Identifying and resolving issues promptly can help maintain the integrity of your roof, prevent further damage, and ensure a healthy living environment.
I had curling shingles on my home and had to have the entire roof replaced. Since it wasn’t leaking at the time, I was able to negotiate a better price on the new roof since it wasn’t a ‘need-to-do-now’ type of job.