Gunite Pool Repair Underwater: Top 3 Powerful Solutions
Gunite pool repair underwater can seem daunting, but with the right approach, it’s manageable. Gunite pools are celebrated for their durability and flexibility. Yet, like all structures exposed to the elements and constant use, they are not immune to wear and tear.
- Common Issues: Cracks, leaks, and surface deterioration are typical problems. These can be caused by temperature changes, ground settling, or aging.
- Repair Options: Using underwater adhesives, such as AquaBond, can fix leaks effectively without draining the pool. DIY solutions are possible for minor issues, but professional help ensures longevity.
- Maintenance is Key: Regular check-ups and immediate attention to minor issues prevent bigger, more costly repairs later on.
I am David Brabant, owner of Creative Edge Pools, and with more than thirty years of experience in swimming pool development, I’ve encountered every type of gunite pool repair underwater challenge imaginable. Let’s dive deeper into how you can protect your investment efficiently and effectively.

Basic gunite pool repair underwater terms:
– gunite pool care
– gunite pool maintenance
Understanding Gunite Pool Issues
Gunite pools are renowned for their robustness and adaptability, but they are not invincible. Over time, even the most well-maintained pools can develop issues. Let’s take a closer look at the common problems you might encounter and how they can affect your pool.
Cracks
Cracks in gunite pools can appear for a variety of reasons. Temperature fluctuations, ground movement, and improper installation are frequent culprits. While hairline cracks may seem insignificant, they can grow and lead to more severe structural damage if not addressed promptly.
Large cracks, in particular, are a red flag. They can compromise the pool’s integrity and should be repaired as soon as possible. For minor cracks, products like AquaBond Underwater Repair Adhesive are effective solutions. They allow for repairs without the need to drain the pool, saving time and water.
Leaks
Leaks are another common issue with gunite pools. They often result from cracks but can also be due to aging or poor construction. Detecting leaks early is crucial, as they can lead to water loss and increase your maintenance costs.
Using underwater sealants can help patch leaks efficiently. These products are designed to work underwater, providing a waterproof seal that keeps your pool in top shape.
Surface Deterioration
Over time, the surface of a gunite pool can deteriorate. This can be due to chemical imbalances, prolonged exposure to sunlight, or simply the passage of time. Surface issues might manifest as rough patches, discoloration, or peeling plaster.
Regular maintenance and resurfacing can prevent these problems from escalating. Addressing surface deterioration not only keeps your pool looking good but also extends its lifespan.

In summary, understanding and addressing these common issues can help maintain the health and longevity of your gunite pool. Whether it’s using gunite pool repair underwater techniques or scheduling regular maintenance, staying proactive is key to enjoying a trouble-free swimming experience.
Gunite Pool Repair Underwater
Repairing a gunite pool underwater might sound like a daunting task, but with the right products and techniques, it’s entirely manageable. Let’s explore how sealants, adhesives, epoxy, and polyurethane foam can help you tackle these repairs without draining your pool.
Sealants
Underwater sealants are a game-changer for pool repair. Products like AquaFlex Underwater Sealant can be applied directly to the pool surface, even when submerged. This sealant offers a strong, flexible, and invisible waterproof seal, perfect for addressing leaks and minor cracks. The application process involves using polyethylene film to spread the sealant evenly, ensuring a secure bond even in wet conditions.
Adhesives
For more structural repairs, underwater adhesives like AquaBond Underwater Repair Adhesive are your go-to solution. This two-part epoxy adhesive is designed for long-lasting repairs, effectively acting as a powerful “glue” for visible cracks. It works well on vertical and horizontal surfaces, providing a clean, paintable finish once cured. This makes it ideal for areas where aesthetics matter.
Epoxy
Epoxy products are popular due to their versatility and strength. They can be used to patch cracks and leaks, providing a durable repair solution. When using epoxy underwater, follow the manufacturer’s instructions closely to ensure a proper cure. The working time of epoxy varies with temperature, so plan your repair accordingly to achieve the best results.
Polyurethane Foam
For more extensive cracks, polyurethane foam injection kits offer a robust repair option. These kits use low-pressure injection to fill cracks and joints, expanding up to 25 times their original volume to ensure complete coverage. This method is particularly effective for sealing large cracks and preventing further water infiltration.

By utilizing these gunite pool repair underwater techniques, you can effectively address cracks, leaks, and other common issues without the hassle of draining your pool. This not only saves water but also keeps your pool operational, minimizing downtime.
In the next section, we’ll explore whether tackling these repairs yourself is a viable option or if professional assistance is the way to go.
DIY vs Professional Gunite Pool Repair
When it comes to repairing your gunite pool, you have two main options: DIY or hiring a professional service. Each approach has its own set of advantages and drawbacks. Let’s explore the details to help you decide which route is best for your situation.
DIY Gunite Pool Repair
Pros:
- Cost Savings: One of the most significant benefits of DIY repairs is the potential to save money. By purchasing repair products like AquaFlex Underwater Sealant or JB Water Weld, you can address minor cracks and leaks without the added cost of labor.
- Convenience: With many products available online, you can quickly access what you need and start repairs at your own pace. This flexibility allows you to fit pool maintenance into your schedule.
- Satisfaction: Successfully completing a repair yourself can be incredibly satisfying. It gives you a sense of accomplishment and control over your pool’s maintenance.
Cons:
- Skill Level Required: DIY repairs require a certain level of skill and knowledge. If you’re unfamiliar with the materials or techniques, you might end up causing more harm than good.
- Limited Scope: DIY repairs are generally best suited for minor issues. Larger structural problems or extensive damage may be beyond the scope of a DIY fix.
- Time-Consuming: Repairing a pool yourself can be time-consuming, especially if you’re learning as you go. It might take several attempts to get it right.
Professional Gunite Pool Repair
Pros:
- Expertise: Professional repair services bring a wealth of experience and specialized knowledge to the table. They can accurately diagnose issues and apply the most effective solutions, reducing the risk of future problems.
- Comprehensive Solutions: Professionals have access to advanced tools and materials, allowing them to handle complex repairs that go beyond the capabilities of DIY methods.
- Time Efficiency: Hiring a professional saves you time. They can complete repairs more quickly and efficiently, minimizing disruption to your pool use.
Cons:
- Cost: Professional services can be expensive. The initial investment may be higher, but it often pays off in the long run with durable and reliable repairs.
- Scheduling: Depending on the availability of repair services in your area, you might have to wait for an appointment, which can be inconvenient if the issue is urgent.
Choosing the Right Approach
Deciding whether to tackle a repair yourself or hire a professional depends on the severity of the damage, your budget, and your comfort level with DIY projects. For minor cracks and leaks, a DIY approach using high-quality products like AquaBond Underwater Repair Adhesive might suffice. However, for more extensive damage or if you’re unsure about the repair process, it’s wise to consult with a professional to ensure a long-lasting solution.
In the next section, we’ll explore some of the top products available for gunite pool repair underwater, helping you make informed decisions about your repair needs.
Top Products for Gunite Pool Repair Underwater
Repairing a gunite pool underwater requires specialized products that can effectively patch cracks and leaks while submerged. Here are some top products that can help you tackle these repairs with ease:
AquaFlex Underwater Sealant
AquaFlex Underwater Sealant is a versatile product that offers a reliable solution for sealing cracks and leaks in gunite pools. This sealant is designed to be applied underwater, making it ideal for those who prefer DIY repairs without draining their pool.
- Flexible Application: AquaFlex is known for its flexibility, allowing it to conform to various crack shapes and sizes. This adaptability ensures a tight seal that can withstand water pressure.
- Ease of Use: Applying AquaFlex is straightforward. Simply dispense the sealant onto a piece of polyethylene film, then press it over the crack. The sealant cures underwater, forming a strong bond in just a few hours.
- Durability: Once cured, AquaFlex provides a long-lasting seal that can help prevent further water leakage and prolong the life of your pool.
AquaBond Underwater Repair Adhesive
AquaBond Underwater Repair Adhesive is another excellent option for underwater repairs. This adhesive is specifically formulated to bond to wet surfaces, making it perfect for gunite pool repairs without the need to drain the water.
- Strong Bond: AquaBond creates one of the strongest bonds available for underwater repairs. It hardens quickly, allowing you to address issues efficiently.
- Non-Sag Formula: This adhesive is non-sag, meaning it stays in place even when applied to vertical surfaces. This feature is particularly useful for repairing cracks on pool walls.
- Versatile Use: AquaBond can be used for a variety of repairs, including fixing structural leaks and reattaching tiles, making it a valuable addition to any pool owner’s toolkit.
JB Water Weld
JB Water Weld is a popular choice for those looking for a putty-like solution to repair their gunite pool. It is a hand-mixable epoxy that can be applied underwater, making it convenient for quick fixes.
- Easy Application: Simply knead the putty until it reaches a uniform color, then apply it to the cracked area. It starts to harden in minutes, allowing you to make swift repairs.
- Versatile and Strong: JB Water Weld bonds to a variety of surfaces, including metal, fiberglass, and concrete. This versatility makes it suitable for different types of repairs within your pool.
- Temporary Fix: While JB Water Weld is effective for minor cracks and leaks, it is generally considered a temporary solution. For long-term results, consider using it in conjunction with more permanent repair options.
Choosing the right product for your gunite pool repair underwater depends on the nature and extent of the damage. For minor leaks and cracks, AquaFlex and JB Water Weld offer convenient DIY solutions. For more substantial repairs, AquaBond provides a robust and durable fix. Using these products effectively can help you maintain your pool’s integrity and enjoy a worry-free swimming experience.
Preventative Maintenance for Gunite Pools
Regular upkeep is key to extending the life of your gunite pool and avoiding costly repairs. By following a few simple maintenance tips, you can keep your pool in great shape for years to come.
Regular Upkeep
Check for Cracks and Leaks: Regularly inspect your gunite pool for any visible cracks or leaks. Early detection of these issues can prevent them from becoming major problems. Use a pool dye test kit to check for leaks if you suspect water loss.
Maintain Water Chemistry: Keeping the water chemistry balanced is crucial. Test your pool water weekly to ensure proper pH, alkalinity, and chlorine levels. Imbalances can lead to surface deterioration and increase the risk of algae growth.
Clean the Pool Regularly: Regular cleaning helps remove debris and prevent staining. Skim the surface daily, brush the walls and floor weekly, and vacuum as needed. This not only keeps your pool looking great but also reduces the chances of algae and bacteria buildup.
Addressing Minor Issues
Repair Small Cracks Promptly: If you notice minor cracks, address them immediately using suitable products like AquaFlex or JB Water Weld. These products allow for quick and easy repairs, even underwater, preventing small issues from escalating.
Monitor Pool Equipment: Regularly check pool equipment, such as pumps and filters, for signs of wear and tear. Ensure they are functioning correctly to maintain optimal water circulation and cleanliness.
Maintenance Tips
Schedule Professional Inspections: Consider having a professional inspect your pool annually. They can identify potential issues that may not be visible to the untrained eye and provide expert advice on maintenance.
Winterize Your Pool: If you live in an area with cold winters, properly winterize your pool to protect it from freeze damage. This includes lowering the water level, draining equipment, and covering the pool.
Use a Pool Cover: When not in use, keep your pool covered to reduce evaporation, keep debris out, and maintain water temperature. This simple step can help preserve the pool’s surface and reduce maintenance efforts.
By integrating these preventative measures into your routine, you can significantly prolong the life of your gunite pool. Regular maintenance not only improves the pool’s durability but also ensures a safe and enjoyable swimming environment for you and your family.
Frequently Asked Questions about Gunite Pool Repair Underwater
Can you patch a gunite pool with water in it?
Yes, you can patch a gunite pool underwater using specialized products. Sealants and adhesives designed for underwater application, like AquaFlex Underwater Sealant and AquaBond Underwater Repair Adhesive, are perfect for this task. These products are engineered to adhere to wet surfaces, making it possible to repair cracks without draining the pool. This not only saves time but also conserves water.
How to repair a pool under water?
Repairing a pool underwater involves a few straightforward steps. First, clean the area around the crack or damaged spot to ensure the best adhesion. Use a brush to remove any debris or algae. Next, apply an epoxy or sealant directly to the crack. Many underwater repair kits come with a static mixer or applicator to make this process easier. Feather the edges of the patch to ensure a smooth transition and better bonding.
For larger cracks, consider using polyurethane foam injection kits. These kits expand to fill the entire crack, providing a more permanent solution. Remember to follow the instructions on the product label for the best results.
Can water seep through gunite?
Gunite pools are robust, but they are not immune to water seepage. Cracks and damaged areas in the pool can allow water to leak through. Over time, factors like ground settling, temperature changes, or improper installation can cause these issues. Detecting and repairing these cracks promptly is crucial.
Regular inspections can help catch these problems early. If you notice water levels dropping faster than usual, it might be a sign of a leak. Using a pool dye test can help confirm if water is seeping through a crack. Once identified, applying a suitable underwater sealant can effectively stop the leak and prevent further damage.
Conclusion
At Creative Edge Pools, we understand that maintaining a gunite pool can be a challenge, but with the right approach and tools, gunite pool repair doesn’t have to be daunting. Our expertise lies in not only designing and installing stunning custom pools but also ensuring they remain in top condition for years to come.
Customer satisfaction is at the heart of everything we do. We pride ourselves on delivering comprehensive backyard solutions, from pool installations to landscape improvements, all custom to your vision. Our family-owned business has served Eastern Massachusetts and Southern New Hampshire for years, and we are committed to providing exceptional service and quality craftsmanship.
We believe that a well-maintained pool is a source of joy and relaxation. That’s why we offer a range of services and products designed to keep your pool in pristine condition. Whether you need professional repair services or are looking to tackle minor repairs yourself, we have the expertise and resources to guide you every step of the way.
For more information about our services and how we can help you with your gunite pool needs, visit our Gunite Pool Services page. Let us transform your backyard into a paradise that you and your family will enjoy for years to come.

