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How to Locate a Leak Under a Concrete Slab

How to Locate a Leak Under a Concrete Slab

If you think you have a leak under the concrete slab of your home, you’re likely anxious to get it repaired before your home suffers any structural damage.

But before you look into getting your concrete slab leak repaired, you should probably verify that you actually have one, right?

To help you do that, we’ll discuss:

  • The signs of a concrete slab leak
  • How to confirm your home has a leak
  • How to pinpoint the location of that leak.

Already know you have a leak and need it repaired ASAP? Just contact us and we’ll send over a plumber who’s experienced in detecting and repairing concrete slab leaks.

Step 1: Keep an eye out for signs of a concrete slab leak

Signs that you might have a leak under the concrete slab of your home include:

  • A sudden decrease in water pressure
  • Water collecting in areas it shouldn’t
  • Areas of carpet that stay damp
  • Warped hardwood flooring
  • A hot water heater that’s constantly running
  • Water bills that are suddenly higher-than-normal (this can be accompanied by higher gas/electric bills if the leak is in a hot water pipe)
  • Sudden presence of mold/mildew in walls or under carpet
  • Areas of the floor that are suddenly warm (if you have pets, they may suddenly prefer to sit in these warm spots)

See the signs of a concrete slab? Then let’s move on to how you can try to determine where the leak is in your home’s plumbing.

Step 2: Test for a leak

Confirm your home has a leak by following these steps:

  • Step 1: Turn off all water appliances. This includes not flushing toilets, turning off sprinklers, etc.
  • Step 2: Locate your water meter. Water meters can usually be found along the driveway or boundary of your property. It’s usually marked by a plastic or metal covering labeled “Water Meter”.
  • Step 3: Remove the cover (you may need to use a screwdriver to pry the lid open).
  • Step 4: Check the numbers or triangle on your water meter. If the red triangle is moving or the numbers at the bottom of the meter are going up, you have a leak somewhere. See the pictures below for instructions on how to read different water meters for leaks.

Water Meter

If you meter looks like this, check the numbers at the bottom after 30 minutes. If the numbers have gone up, you have a leak. The faster the numbers go up, the larger the leak.

If your meter looks like this, check to see if the red triangle is moving. If it is, you have a leak.

Step 3: Have a professional pinpoint the location of the leak

Unfortunately, unless you have thousands of dollars worth of high-tech professional equipment, it can be nearly impossible to locate a concrete slab leak on your own.

A quality plumbing company will have advanced equipment such as electronic leak detection equipment or video inspection equipment so that they can locate the leak fast. From there, they can recommend the least invasive ways to repair the leak. Sometimes, though, an extensive leak requires repiping of the entire house.

Need professional leak detection & repair? Contact our Florida plumbers

If you think you have a concrete slab leak and need professional repair, we’re here to help.

Just contact us and we’ll send out a plumber right away to locate and repair the leak.

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Categories: plumbing tips.