How to Fix a Pool Pipe Leak Under Concrete: DIY Guide (2024)

If you own a swimming pool, you know how important it is to keep it in good condition. However, sometimes things can go wrong, and you may notice a leak in your pool pipe. Fixing a pool pipe leak under concrete can be a daunting task, but with the right tools and techniques, you can do it yourself.

Many pool owners prefer to take matters into their own hands when it comes to pool maintenance, and fixing a pool pipe leak is no exception. In this DIY guide, we’ll show you how to fix a pool pipe leak under concrete using simple, step-by-step instructions.

With a little bit of knowledge and effort, you can save yourself the time and expense of hiring a professional to fix your pool pipe leak. So, let’s dive in and get started!

If you’re looking to save money and take on a DIY project, fixing a pool pipe leak under concrete is a great place to start. By following the steps outlined in this guide, you’ll be able to identify and repair the leak yourself, without the need for expensive professional services. So keep reading to learn how!

Table of Contents

Step-by-Step Instructions for Locating the Leak

Locating a pool pipe leak can be a daunting task, but it doesn’t have to be. Start by turning off the pool pump and inspecting the pool equipment, checking for any visible leaks. Once you’ve ruled out the equipment, it’s time to move onto the plumbing.

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Begin by checking the area around the pool for any signs of water, including soggy grass, muddy soil, or areas of standing water. Once you’ve identified the area where the leak is likely located, use a plumbing dye to confirm the location of the leak. Simply add the dye to the pool and observe where the color is drawn out of the pool. This will indicate where the leak is located.

Once you’ve confirmed the location of the leak, it’s time to dig. Use a jackhammer to break up the concrete around the suspected area of the leak. Be careful not to damage any surrounding pipes while doing so. Once you’ve cleared the area, use a pipe cutter to remove the damaged section of pipe. Make sure to measure the length of the removed pipe so that you can replace it with a new one of the same length.

With the damaged pipe removed, it’s time to install a new one. Connect the new pipe to the existing pipes using couplings and clamps, making sure that everything is properly aligned and secured. Once the new pipe is in place, fill the hole with fresh concrete and let it dry completely before turning the pool pump back on.

After you’ve finished the repair, it’s important to test the pool for any remaining leaks. Use a pressure gauge to test the system for leaks. If the gauge reads the same pressure as before the repair, then you know that the leak has been successfully fixed.

Fixing a pool pipe leak under concrete can be a challenging task, but by following these step-by-step instructions and using the right tools, you can complete the repair and enjoy a leak-free pool once again.

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Step-by-Step Instructions for Locating the Leak

Turn off the Pool Pump

  1. Locate the pool pump’s circuit breaker: Before turning off the pool pump, locate the circuit breaker that controls the pump’s electricity supply. Flip the switch to the off position to cut power to the pump.

  2. Shut off the pool water supply: After turning off the pool pump, shut off the water supply to the pool to prevent any additional water from flowing into the pool plumbing.

  3. Drain the pool plumbing: Once the water supply is off, drain the pool plumbing by opening the drain valve or cap on the filter. Drain the water into a bucket or hose and move it away from the pool area.

It’s crucial to turn off the pool pump to avoid any injuries or damage to the plumbing during repair. Make sure to follow these steps to turn off the pump and drain the pool plumbing before proceeding with the leak detection process.

Mark the Location of the Pool Pipe

The next step in fixing a pool pipe leak under concrete is to locate the area where the pipe is damaged. This can be done by following the water flow or by using a leak detection kit.

If you’re following the water flow, start at the pool pump and look for any signs of water leaking out of the pipe. Look for wet soil, algae growth, or any signs of water damage. Once you’ve identified the area where the leak is occurring, mark it with spray paint or chalk.

If you’re using a leak detection kit, follow the instructions carefully. The kit will typically involve draining the pool to a certain level, attaching a sensor to the suspected leak area, and then pressurizing the system to force water through the leak, which will be detected by the sensor. Mark the location of the leak once it’s identified.

Conduct a Pressure Test

Once you’ve marked the location of the leak, the next step is to conduct a pressure test to determine the exact location of the leak. This test will help you identify the section of the pool pipe that needs to be repaired. Here’s how to conduct a pressure test:

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  1. Shut off the pool pump: Turn off the pool pump to prevent water from flowing into the pipes.
  2. Cap the return line: Cap the return line, which is the line that carries water back to the pool from the filter.
  3. Attach a pressure testing kit: Attach a pressure testing kit to the skimmer line, which is the line that brings water from the pool to the pump. The kit will allow you to pressurize the line and check for leaks.

Once the pressure testing kit is attached, slowly increase the pressure until it reaches the recommended level. You can check the recommended pressure in your pool’s manual or by contacting a professional. If the pressure drops, it’s an indication that there is a leak in the pipe. Next, you need to locate the exact point of the leak.

Tools You’ll Need to Fix the Leak

Before you begin the repair, you’ll need to gather the necessary tools and supplies. The tools you’ll need include a pipe cutter, a pipe wrench, and a pressure testing kit. You’ll also need a bucket, towels, and a trowel for the repair work.

A pipe cutter is a hand-held tool that makes it easy to cut through PVC pipes. A pipe wrench is a plumbing tool that allows you to grip and turn pipes. The pressure testing kit is used to test the repaired pipe to ensure it can handle the pressure of the water flow.

Make sure you have all the necessary tools and supplies before you begin the repair work. Missing a tool or supply could cause delays in the repair process and increase the cost of the project.

It’s also a good idea to wear protective gear like safety goggles and gloves when working on the repair project. This can help prevent injuries and keep you safe during the repair process.

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Safety Gear

Before you start working on the pool pipe leak, it is essential to ensure your safety. Wear appropriate safety gear, including safety goggles to protect your eyes from debris and chemicals, gloves to keep your hands clean and protected, and dust mask to avoid inhaling any dust or debris.

Make sure you also have a first aid kit nearby in case of any accidents or injuries. Remember to take precautions and work in a well-ventilated area to prevent any respiratory problems.

It’s crucial to read and follow all safety instructions for all the tools and materials you’ll be using. Always remember to turn off the power and water supply to the pool before starting any repairs.

How to Cut and Repair a Pool Pipe Under Concrete

Step 1: Cut the Pipe – Once you have located the leak, the next step is to cut the pipe using a pipe cutter or a hacksaw. Make sure to cut the pipe cleanly and smoothly to avoid further damage.

Step 2: Remove the Damaged Section – After cutting the pipe, remove the damaged section using pliers or a pipe saw. Make sure to remove any debris or dirt from inside the pipe.

Step 3: Replace the Damaged Section – Next, prepare the new section of pipe by measuring and cutting it to the right length. Apply PVC cement to the inside of the fittings and slide them onto the new pipe, making sure to align them correctly. Finally, slide the fittings onto the existing pipe and hold them in place for a few seconds until the cement sets.

Now that you know the steps involved in cutting and repairing a pool pipe under concrete, you can tackle this DIY project with confidence. Remember to always prioritize safety, wear the necessary gear, and take the time to carefully locate the leak and conduct a pressure test before starting any repairs.

Prepare the Area

Step 1: Turn off the water supply to the pool, and drain the water from the pipes.

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Step 2: Remove the concrete around the leaking area. Use a jackhammer, sledgehammer or concrete saw to carefully break the concrete into smaller pieces.

Step 3: Clean the area thoroughly to remove any debris and dirt that might have accumulated around the leaking pipe.

Cut the Concrete

Once the area is prepared, you can begin cutting the concrete around the damaged section of the pipe. Use a concrete saw with a diamond blade to cut a square or rectangular section around the pipe.

Make sure to cut through the concrete completely to create a clean edge that will be easy to remove. Use a chisel and hammer to carefully break the concrete along the cut lines and remove it in sections.

Be sure to wear protective gear, including safety glasses and a respirator, while cutting and removing the concrete to avoid inhaling dust and debris.

Tips for Preventing Pool Pipe Leaks

Proper maintenance of your pool’s plumbing system can help prevent leaks from occurring. Here are five tips to help you keep your pool’s pipes in good condition:

Regular inspection: Inspect your pool’s pipes regularly to check for any signs of damage or wear and tear. Catching a potential problem early can save you a lot of time and money in the long run.

Keep chemicals balanced: Chemicals used in your pool water can cause corrosion in the pipes over time. Make sure to keep the chemical balance of your pool water in check to avoid damage to the plumbing system.

Use a pool cover: A pool cover can help keep debris out of your pool and prevent the pipes from getting clogged or damaged. It can also help regulate the water temperature, which can help prolong the life of your pipes.

Take care when using equipment: Be careful when using pool equipment, such as a pool vacuum or pool brush. Hitting the sides of the pool or the plumbing can cause damage to the pipes, leading to leaks.

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Hire a professional: If you are unsure about how to maintain your pool’s plumbing system, it is best to hire a professional. They can perform regular inspections and maintenance to ensure your pool’s pipes are in good working condition.

Conduct Regular Maintenance

  • Inspect your pool equipment regularly: Check for any signs of wear and tear, leaks, or cracks. If you notice any problems, address them promptly.

  • Clean your pool: Regular cleaning will prevent debris from clogging the pipes and causing pressure build-up, which can lead to leaks.

  • Maintain proper water chemistry: Unbalanced water chemistry can corrode pipes and cause leaks. Test your water regularly and adjust the chemicals as needed.

By following these simple maintenance tips, you can prevent pool pipe leaks and extend the life of your pool equipment.

When to Call a Professional for Pool Pipe Leak Repair

If you notice a leak in your pool’s plumbing system, you may be able to fix it yourself. However, there are situations where it’s best to call a professional. Here are some signs that you should contact a pool leak repair specialist:

Persistent or worsening leak: If you’ve tried to fix the leak yourself, but it continues or gets worse, it’s time to call a professional. They have the tools and expertise to diagnose and fix the problem.

Multiple leaks: If you have multiple leaks in different locations, it may be a sign of a larger issue. A professional can help identify the source of the problem and make necessary repairs.

Pool equipment damage: If the pool equipment, such as the pump or filter, is damaged or not functioning properly, it can cause leaks in the plumbing system. A professional can assess and repair any equipment issues.

Safety concerns: If the leak is causing a safety hazard, such as a slippery deck or potential electrical shock, it’s important to call a professional immediately to avoid any accidents.

Inability to locate the leak: If you’ve tried to locate the leak but can’t find it, a professional leak detection service may be necessary. They use specialized tools and techniques to find the source of the problem.

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Remember that a pool plumbing system can be complex, and attempting to make repairs without the proper knowledge and tools can make the problem worse. When in doubt, it’s best to call a professional pool leak repair service to ensure the problem is fixed correctly and safely.

Major Leak or Pipe Damage

  • Visible damage: If you notice visible damage to your pool pipes, such as cracks or breaks, it’s important to call a professional right away. Attempting to fix major damage yourself could make the problem worse and end up costing you more in the long run.

  • Water loss: If you are experiencing significant water loss and are unable to locate the source of the leak, it’s best to bring in a professional. They will have specialized equipment to help locate and fix the problem.

  • Gas smell: If you detect a strong gas smell near your pool, it could indicate a gas leak. This is a serious problem that requires immediate attention from a professional. Do not attempt to handle the issue yourself.

Remember, when in doubt, it’s always better to call in a professional to ensure the safety of your pool and everyone who uses it.

Frequently Asked Questions

What are the signs of a pool pipe leak under concrete?

Some common signs of a pool pipe leak under concrete include a sudden decrease in water pressure, noticeable cracks in the pool deck, increased water bills, or damp spots in the yard.

Can a pool pipe leak under concrete be repaired without professional help?

While some minor leaks can be fixed by homeowners, it’s generally recommended to seek professional help for repairing pool pipe leaks under concrete to avoid causing more damage and potentially injuring yourself.

What tools are needed to fix a pool pipe leak under concrete?

Tools required for repairing a pool pipe leak under concrete include a shovel, a sledgehammer, a chisel, a saw, a pipe cutter, PVC cement, pipe fittings, and a plumbing snake.

How long does it take to fix a pool pipe leak under concrete?

The duration of repairing a pool pipe leak under concrete varies depending on the size and severity of the leak. Generally, it can take anywhere from a few hours to a few days to fix a pool pipe leak under concrete.

What can be done to prevent pool pipe leaks under concrete?

Regular maintenance and inspection can help prevent pool pipe leaks under concrete. Additionally, avoiding heavy equipment or vehicles on the pool deck, using pool-safe chemicals, and monitoring water chemistry can also help prevent leaks.

When should a professional be called to repair a pool pipe leak under concrete?

It’s best to call a professional for repairing a pool pipe leak under concrete if the leak is significant, the pool deck is showing signs of damage, or if you’re not confident in your ability to safely repair the leak yourself.

How to Fix a Pool Pipe Leak Under Concrete: DIY Guide (2024)

FAQs

How to fix a leaking pipe under concrete? ›

The first way you can fix a leak is by jack-hammering the concrete slab, digging down to the pipe, and fixing it. The second way is to dig a tunnel through the dirt under the slab from the outside all the way to where the leak is.

How to seal a leaking pool pipe? ›

Suction side leaks can be patched with pool putty, or other sealants on the outside of the pipe, because the sealant is drawn into the crack under suction. But pressure side pool leak repairs cannot be patched effectively from the outside (or from the inside!), and need to be cut out and replaced.

How to fix water seeping through a concrete pool? ›

If leakage is around the conduit, use a silicone sealant to seal the leak. If the leakage is around a gasket, drain pool below light and replace gasket.

How deep are pool pipes underground? ›

Minimum Depth: In many areas, the minimum recommended depth for burying pool pipes is 18 inches (approximately 45 centimeters). This depth provides adequate protection from surface activities and prevents accidental damage.

How do you fix an underground PVC pipe without digging? ›

To fix a leaking water pipe under the house without digging, consider using trenchless repair methods like pipe lining or pipe bursting. These non-invasive techniques involve inserting a new pipe into the existing one, minimizing the need for excavation.

Is a broken pipe under slab covered by insurance? ›

Though homeowners insurance covers slab leaks and water damage caused by burst pipes, it typically won't cover the cost to fix the broken pipes. If your pipes are broken but there isn't any actual damage to your slab, you'll likely have to pay the cost of any repairs out of pocket.

What is the best way to seal leaking concrete? ›

Crack/joint injection and curtain grouting stand out as the most prevalent techniques for addressing active water leaks in concrete structures. These leak sealing methods are the first line of defense against water intrusion, providing immediate solutions to maintain structural integrity.

Can you use Flex seal on pool leaks? ›

The next time you find yourself with this problem, just use Flex Tape and your pool leak will be repaired in a matter of minutes. It'll save you time, money, and energy – allowing you to get back to what's most important – having fun!

Can you fix a pool leak without draining? ›

Underwater Repair Adhesive is the ideal hybrid epoxy adhesive for repairing swimming pools and spas underwater – without draining the pool!

Can you patch a pool leak underwater? ›

For underwater leaks, you can use a wet patch kit.

Can a pool leak through concrete? ›

Most leaks in pools occur through cracks in floors or walls, but some develop through highly porous or honeycombed concrete.

How do you fix water coming through concrete? ›

If a high amount of moisture is present in the concrete (over 3 lb according to a calcium chloride test) it is best to use a moisture vapor barrier coating. If the moisture content of the concrete is less than 4% you can use a penetrating concrete waterproofing sealer.

What can I use to stop my pool leaking? ›

Most pool leaks are easy to fix once found. Simple repairs usually involve a bit of pool putty, waterproof silicone, a vinyl patch, or a plaster patch. Very small plumbing leaks can sometimes be patched with Pentair Stop Leak, but this shouldn't be considered a solution for major plumbing leaks.

Can you reline a pool pipe? ›

All you really need to have watertight, safe, and reliable pipes is a trenchless pipe relining, also known as a Cured-In-Place Pipe. This quick procedure allows your existing pool drain pipes to be lined with an epoxy resin that fills and protects them.

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