Does your home sit on a post-tension slab? If so, a slab leak could be difficult for you to fix. This article explains why a post-tension slab leak is a challenging repair job.

Slab leaks are one of the most involved plumbing repairs that we handle at Custom Plumbing. When your home is built on a post-tension slab foundation, though, things get even more complicated.

Why? Well, we’ll get to that.

First, let’s explore what this type of slab foundation is, how to tell if your home has one, and why you should never cut through it to fix a plumbing issue.

Not sure if your home has this type of foundation? Here’s what you need to know.

What is a post-tension slab?

The purpose of a post-tension slab is to reduce building costs in areas with expansive or otherwise poor soil conditions. The idea is that this type of foundation spreads the weight of the home over a larger area. Whereas a regular slab puts most of the weight on footings, a post-tension slab puts some of the weight on the slab itself.

How to Identify It

If you are unsure whether your home falls into this category, there are a few ways to tell. Look for these signs before doing any repairs under the slab:

  • Look for a stamp in the concrete that identifies the post-tension slab (usually near the garage door or another easily noticeable location).
  • In older homes, check for an identifying sign attached to the wall in the garage.
  • If no signs are visible on your home, you can also check your home’s building plans.
  • You may also be able to see signs of a post-tension slab on the outside of your foundation. Look for circular concrete patches about two to four feet apart.

Once you figure out what type of foundation your home has, you should still wait to start work on a slab leak. Here’s why.

Never Cut This Type of Slab

Some leaks under a home’s slab require cutting through the slab to access the broken pipe. You should NEVER cut through a post-tension slab. The reason is that you could damage or sever one of the cables running through the concrete. Doing so could risk the integrity of the foundation and possibly even cause one of the cables to rip through the foundation and seriously injure someone.

Instead, a trained professional will need to do this to repair a leak.

Tunneling to Repair a Post-Tension Slab Leak

To repair this type of plumbing problem, you will need a professional to tunnel underneath the slab to access the damaged pipe. There are actually some benefits to fixing the problem this way. You won’t damage any of your home’s floors. You won’t lose access to your home while repairs are being completed. By tunneling, you won’t risk introducing mold to the interior of your home.

Think you might have a post-tension slab leak? Stop procrastinating and call us.

Get in touch with us if you have any questions. We are happy to speak to you about what you are experiencing.

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Looking for plumbers that handle slab leak detection in Phoenix? Custom Plumbing of Arizona specializes in this essential service. Here’s why we think you should hire a professional as soon as possible.

If you have ever experienced a slab leak, you know exactly how devastating it can be. If not, then you should know that not only can a slab leak under your home be financially devastating, but also it can be dangerous.

Not sure whether to hire someone to look for a potential slab leak in your home? Here’s why we think you should.

3 Reasons to Hire a Pro for Slab Leak Detection in Phoenix

Slab Leaks Need to Be Fixed ASAP

If your home has a slab leak, it needs to be fixed as quickly as possible. The longer you wait to address the problem, the more damage it can do to your foundation. The first step is detecting the leak, and that usually requires a professional plumber.

Professional Plumbers Have Access to Special Equipment

It is possible to determine whether you have a slab leak under your home, but most of the time, you are going to need some special tools to help with detection. Plumbers use special technologies like sonar and infrared to locate slab leaks. When you hire a plumber, you are not only getting their skills and experience—you also get access to equipment that helps make detection more accurate.

Professional Plumbers Can Tell You Why the Slab Leak Occurred

Perhaps the most important reason that you should hire a plumber to find your slab leak is that they can give you an accurate report on the underlying cause of the damage to your plumbing system. There is no single cause of slab leaks. Some are the result of settling soil underneath the house, which can put pressure on the pipes under the concrete slab. Others happen because of corrosive materials in the soil. Sometimes it comes down to faulty installation.

Whatever the cause of your slab leak, you need to understand exactly what caused it in the first place or it could happen again. Reinstalling metal pipes in corrosive soil is not a solution. Repairing pipes when the soil is still settling is not a solution. If you don’t know the underlying cause, you could be doomed to repeat a really expensive mistake.

Slab Leak Detection Phoenix: Have You Contacted a Professional Yet?

Do not wait another second to talk to a plumbing expert if you think that your home has a slab leak. The damage that could occur—and may have occurred already—could be extensive enough to make your home unsafe. At the very least, it could lead to the need for extensive foundation repairs.

Get in touch with the experts at Custom Plumbing of Arizona now if you have any questions. We are happy to answer them and guide you in the repair process.

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Yes! Early concrete slab leak detection is possible, but you need to know the signs. You may even need to contact a professional. Here are some of the facts.

Every homeowner whose house has a slab concrete foundation knows how devastating a slab leak can be. The longer the leak goes unaddressed, the worse the problem will get.

Early concrete slab leak detection is critical if you want to mitigate some of the damage that can happen.

Signs That You Might Have a Slab Leak

The following are only a few of the signs that you may have a slab leak on your hands, so be sure to speak to a plumber with experience fixing this kind of problem for more information.

Low Water Pressure

If you regularly experience low water pressure and there is no other apparent cause for it, you could have a leak. When your plumbing system has a leak, the water pressure drops. A licensed plumber can help you determine whether your low water pressure is due to a slab leak or some other cause.

Running Water Sounds

When all the water is turned off in your home, you should not be able to hear the sound of running water. Because a slab leak allows the water to run unchecked underneath your foundation, you may hear it when you shouldn’t be able to.

A simple test can help you with early concrete slab leak detection here. Turn off all the water sources in your home and check the water meter. If your meter is still reading water consumption, you might have a slab leak.

High Water Bills

As with any running water in your home, you have to pay for the water that you lose from a slab leak. If you know that your water consumption hasn’t changed yet your water bill has gone up, you should investigate the problem further. The leak may not be underneath your foundation, so look around your home for signs of leaking pipes, such as mold, bubbling walls, and pest infestations.

If you can’t find any other sources for a leak, concrete slab leak detection becomes critical to determine whether you need to hire someone to repair the problem.

Ask Us How Our Concrete Slab Leak Detection Works

Low water pressure, running water sounds, and water bills that are higher than normal are only a few of the signs that you might have a slab leak that needs to be fixed. If you suspect that your concrete slab foundation has a leak underneath it, you need to get a professional plumber to take a look at your pipes as soon as possible.

Need help with your plumbing? Schedule a visit from one of our top plumbers. Get in touch with the plumbing experts at Custom Plumbing of Arizona today to receive a free quote. We are standing by to take your call and answer your questions!

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The damage that a plumbing slab leak causes is slow and steady, which is why homeowners often do not notice this problem until it has caused extensive damage. In some cases, it can even leave a home unlivable. A plumber can help detect it before it’s too late.

If you suspect that your home has a slab leak, or if you simply want to rule out the possibility, it is absolutely critical that you contact a licensed plumber in your area. At Custom Plumbing of Arizona, we are experts at slab leak detection and repair, so please do not hesitate to call us if you have any questions.

Think that this type of leak has already damaged your home? If you notice any of these signs, you should act fast to repair the damage from your plumbing slab leak.

Your Home’s Foundation Has Shifted

The slow erosion and degradation that occurs with a slab leak ensures that, given enough time, your foundation with start to crumble and shift if you do not intervene. The first signs that you may notice include cracks at the base of your home. At these first signs, you should bring a plumber into your home to take a look. They can tell you what to expect moving forward.

The problem with plumbing slab leaks is that because the signs don’t appear to be drastic, or don’t appear at all, homeowners often don’t take action. This is a mistake that you need to avoid. Failing to take action could cost you.

A Plumbing Slab Leak Can Drain Your Bank Account

If you are one of the lucky few to catch this problem before it causes significant damage, you could end up saving thousands of dollars. Sometimes, insurance does not cover the cost of repairs, but considering that some slab leaks go undetected so long that the house ends up being condemned, that is getting off easy.

What seems like a small problem right now will grow into a serious one later, so don’t wait any longer than you need to if you want to protect your home. If your home is over 30 years old, we suggest that you get your plumbing inspected regularly.

If you need an expert to inspect your home’s plumbing, please don’t hesitate to contact us today.

Get Your Home Inspected for a Plumbing Slab Leak Today

Are you worried that you have a slab leak that is causing damage to your home’s foundation?

We can help.

It’s time to stop waiting for things to get better on their own. At Custom Plumbing of Arizona, we have the knowledge and tools that you need to find and fix your slab leak problem before it grows into a more expensive and destructive problem than it currently is. Get in touch with us today so that we can take a look at your home’s plumbing and talk about your needs.

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In an emergency, you want to know that you can rely on your plumber to get the job done. A good plumber knows what to do—and how to do it fast—during a plumbing emergency. What is a plumbing emergency? Keep reading to learn when you should call a plumbing expert ASAP.

As the name suggests, a plumbing emergency is an incident during which the plumbing in your home or business malfunctions, often causing serious damage, or at least having the potential to cause it. It does not take long for a little bit of water to do a lot of damage to a building’s flooring, walls, ceilings, and even foundation.

A plumbing emergency usually has a few distinct characteristics:

  1. Water is leaking from an undefined source.
  2. Water is coming from a visible source but can’t be stopped without professional help.
  3. The leaking water has caused or has the potential to cause extensive damage.
  4. Hazardous waste or materials are present.

Your basement doesn’t need to be flooded to warrant a call to an emergency plumber. What is a plumbing emergency? These four examples answer this critical question.

Leaking or Burst Pipes

Leaky pipes are one of the most common examples of a plumbing emergency. A burst pipe can lead to thousands of dollars in water damage, even in a relatively short period of time.

But it doesn’t take a broken pipe that is gushing gallons of water to qualify a leak as an emergency.

Even a pinhole leak left unattended can severely damage carpet, wood, and drywall, not to mention lead to mold damage that can put your family’s health at risk and lead to expensive repairs.

Overflowing Toilet

We’ve all done it—we go to flush the toilet and the water rises fast. Aside from being a bit embarrassing, a clogged and overflowing toilet could indicate a larger problem than an isolated incident suggests.

If your toilet repeatedly overflows, it might be time to call an emergency plumber to take a look.


No matter what the cause is, if your home is flooded, you need to call a plumber right away. If you don’t take care of the problem the first time it happens, it will be more likely to happen again.

Sewer Backup

As we have written about before, you don’t ever want to experience a sewer backup. Needless to say, if you have sewage backing up into your home, you need to call a plumber immediately. Keep your nose on high alert. If you smell any weird scents coming from your drains, you could prevent a hazardous, costly incident by simply having a plumber take a look.

What Is a Plumbing Emergency Going to Take to Fix?

If you think you are having a plumbing emergency, it is best to err on the side of caution. Give us a call any time, day or night, and we will send an expert to take care of the problem.

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