
If you insist on doing it yourself, here are a few steps you’ll need to take:
- Locate the break. Since a slab is porous, you should be able to tell where the break is right away because the water will leak upward through the slab.
- Do a spot repair. ...
- Study what you found. ...
- Consider the relining option. ...
Full Answer
How do you repair a water line under a slab?
Repairing Water Lines The most common type of pipe used for water lines under a slab foundation is copper tubing. As copper pipes age, they are prone to wearing thin and springing a leak. To repair a copper pipe you must cut the damaged section of pipe with a hacksaw, reciprocating saw or tubing cutter and remove it.
How do you repair broken plumbing?
These approaches are: 1 replacing broken pipes by cutting the slab, excavating the dirt and damaged pipes, installing replacement pipes and... 2 re-routing your plumbing to be external to the house slab 3 relining broken pipes with advanced composite resin and fibre CIPP compounds which are cured to form a strong, new,... More ...
Can you repair sewer pipes under slabs?
But for anyone needing to repair a sewer pipe under a slab, the most exciting development is use of these incredibly strong materials for relining broken sewer and water pipes.
How to repair leaking drains under house slabs?
There are three main approaches to repairing leaking drains under house slabs. You should ensure you have obtained an inspection/quotation from at least one specialist from each area. Nuflow technicians carrying out a CCTV inspection on a broken drain pipe under a house.

How do you fix a water pipe under a concrete slab?
1:203:57How to repair a water line under concrete slab with out jackhammeringYouTubeStart of suggested clipEnd of suggested clipPush the water line from the water heater side. We had to remove the water heater pack they use theMorePush the water line from the water heater side. We had to remove the water heater pack they use the good one that was smooth.
How do you fix plumbing under a slab?
1:155:12How to Repair a Sewer Pipe Under a Concrete Slab | This Old HouseYouTubeStart of suggested clipEnd of suggested clipDown the cut ahead at the end of the drain snake will scrape the inside of the pipe. And remove theMoreDown the cut ahead at the end of the drain snake will scrape the inside of the pipe. And remove the last of those tree roots to leave a nice clean pipe.
How much does it cost to fix a pipe under foundation?
According to HomeAdvisor, the national average of a slab leak repair job is about $2,280. Meanwhile, the average cost of a simple pipe repair is about $630. On the high end, however, repairs may be up to $10,000 or more if total repiping and damage remediation, such as mold or asbestos abatement, are required.
How do I fix a broken water pipe under my house?
0:138:26Repair a Burst Pipe in 10 Minutes or Less - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo that you don't have to use solder. When you're using copper. You just slide them into place. AndMoreSo that you don't have to use solder. When you're using copper. You just slide them into place. And the same thing is true with PEX. You just slide it on and you can also use it on CPVC.
How deep are plumbing pipes under a slab house?
You will find your sewer lines 12 to 24 inches below the concrete slab in a slab house. All homes require a foundation to help support the weight of the house. A slab house uses a concrete slab as its foundation.
Can a pipes burst in a slab foundation?
When a pipe underneath a home's slab foundation has a leak, most homeowners may not notice they have a problem for a long time. The broken pipe allows water to seep into the ground and the home's foundation. In addition to wasting water, the leak can damage the concrete and erode the soil around it.
How long can a slab leak go undetected?
These water leaks start off invisible to the eye and go undetected for weeks or even months, they can cause hidden water damage and mold. After 72 hours after a water leak mold can start to grow, thriving in damp, dark places like behind cabinets and between walls.
How do you find a leak under a slab?
How to Tell if You Have a Leak Under a SlabThe first indicator is the presence of water or damp spots on your floor. ... A second situation that can alert you that your water lines are leaking is the sound of rushing water underneath your floor.More items...•
How can you tell if you have a leak under a slab?
How To Detect a Slab LeakYou hear water running under your floors, but your taps and plumbing appliances are off.Carpets are damp or wet without an explanation.You smell mold, mildew, or a general mustiness.There are warm spots on your floor.Floorboards are warped or buckling.Your water pressure has decreased.More items...•
How do you fix an underground water pipe?
Underground Pipe Relining If the existing pipe has a wide enough diameter, the plumbers may be able to insert a new liner into the pipe. This technique works for pipes that are cracked, broken or displaced. The pipe lining cures in place and can be used to repair pipes made from clay, cast iron, PVC, HDPE or concrete.
How do you know if a pipe has burst in the ground?
If you notice the following signs, you might have an underground water leak in your home:Noticeable drop in water pressure when using plumbing appliances.Hissing or splashing noises.Dirty or rusty water (although this could be due to another problem)An increase of mold or water-loving insects in your home.More items...•
How do you fix a broken outside water pipe?
2:415:07How to Repair a Burst Water Pipe - YouTubeYouTubeStart of suggested clipEnd of suggested clip1 you can use a clamp and sleeve repair kit to temporarily fix a leaking copper pipe. This kit isMore1 you can use a clamp and sleeve repair kit to temporarily fix a leaking copper pipe. This kit is easily available in most local hardware stores.
How do you install plumbing in a slab foundation?
1:051:58How to Install Plumbing in a Slab - YouTubeYouTubeStart of suggested clipEnd of suggested clipWe've got some rebar with a wire harness just sitting across to keep it in place the toilet flangeMoreWe've got some rebar with a wire harness just sitting across to keep it in place the toilet flange you want to have just above the grade of the concrete. Again you'll be able to cut that out flush.
How do you add plumbing to a slab foundation?
2:3310:31Ideas for Adding a Bathroom to a House with Concrete Slab FoundationYouTubeStart of suggested clipEnd of suggested clipFor you to come out the side of the slab versus. Running directly through this left to tie into theMoreFor you to come out the side of the slab versus. Running directly through this left to tie into the existing central waste lines in the property.
How does plumbing work on a slab foundation?
0:282:23How A Slab House is Built [See Plumbing Lines Under the Slab]YouTubeStart of suggested clipEnd of suggested clipAnd so they put the basic plumbing some of the water runs of course go through the walls as well butMoreAnd so they put the basic plumbing some of the water runs of course go through the walls as well but they get their basic plumbing runs in the ground before the slab is poured.
How do you run a pipe under a concrete slab?
2:485:11How To Run a Pipe Under a Slab or Sidewalk With a Garden HoseYouTubeStart of suggested clipEnd of suggested clipAnd you're going to just basically push and pull back push and pull back. And you may hit a root.MoreAnd you're going to just basically push and pull back push and pull back. And you may hit a root. That's okay just keep doing this it's gonna force all that dirt. Out kind of let it run a little.
How to repair a copper pipe?
Should you decide to repair the copper pipe, rather than replace, it’s a fairly easy procedure. A hacksaw or tubing cutter can be used to cut out the damaged portion. The next step is to simply replace it with new tubing and copper couplings before soldering it into place to repair the flow.
How do I know if my slab is leaking?
Pipes. Luckily, there are several signs that indicate a leaking pipe under your slab: The first indicator is the presence of water or damp spots on your floor. Leaking hot-water lines can also create warm spots on your floor.
What to do when a leak is identified?
Once the leak is identified, a plumber can evaluate the situation and the location of the leak. At this point, a plan is configured and put into place. In some cases, it’s better to re-plumb the affected section, while other times new new piping throughout the the entire house will be necessary.
What are the signs of a sewer line leak?
They are more difficult to detect and often go unnoticed until there are visible signs which include damage to your foundation or domed (raised) sections of flooring.
Why does my water bill increase?
Finally, a significant increase in your water bill could be a sign of a leaking pipe. Since a broken line runs continuously, your water bill will rise. If you notice an increase that you can’t explain, either your water company is taking advantage of you, or you have a leak!
Is it hard to repair a leaky pipe?
Many people assume that repairing a leaky pipe beneath a slab is a difficult task. However, it’s not as hard as you might think. Locating and gaining access to the pipe can be tough, but once you know the general area of the leak and can cut your way through the slab, repairing the pipe is simple.
Can copper pipes be replaced?
Before beginning the repairs on a section of pipe beneath a concrete slab, consideration should be given to re-piping, rather than using a temporary fix. Should you decide to repair the copper pipe, rather than replace, it’s a fairly easy procedure.
How deep is a slab house?
Houses that are built on slabs have a concrete beam around the edge that is usually about 600mm deep. The rest of the slab sits above a 100mm to 150mm bed of gravel then a layer of plastic to keep out moisture and possibly termite barriers.
Is a collapsed drain pipe the end of the world?
Collapsed drain pipes under a concrete slab aren’t the end of the world. As distressing as this news might initially be, however, it’s no longer the end of the world, thanks to advances in composite resin technology which occurred as we waved goodbye to the 20th century. Today, composite resin compounds are used to make a whole range ...
What to do if a leak is under a house slab?
But if the leak is deep under your house slab, you would be best advised to consider a professional repair to ensure the structural integrity and insurance cover of your home are not compromised.
How much does it cost to repair a drain under a slab?
Whichever option you finally go with, it is unlikely you’ll get any change from $1,000 and depending on the extent of the damage, could be anywhere from $6,000 to $8,000 so shopping around and becoming as informed as you can is vital.
How to tell if slab leaks?
Early and common signs of a slab leak are: 1 Wet areas of grass beside the home’s exterior walls 2 Wet or damp patches of carpet or moisture on internal flooring 3 Mildew or mould under carpets, rugs or at the base of drapes 4 A musty odour in certain rooms 5 The sound of running or rushing water even when all outlets are turned off (you may have to get down and put your ear against the floor to hear such a leak, which indicates a leak in the pipes entering the house) 6 Warm spots on the floor (walk the floor without shoes or socks in the line from the hot water system to relevant outlets as this can indicate a leak in a hot water pipe) 7 Unexplained increases in your water bill 8 Low water pressure 9 Rising damp on walls when there has been no significant rain
What is slab leak?
A slab leak is an industry term for a leak within the waterline piping below a home’s concrete floor, and they can occur in homes and buildings of all ages . Broken water pipes under your home can cause irreparable damage to foundations and cost tens of thousands of dollars to repair. The extent of the damage can be exacerbated by certain types ...
What to do if you have a leaking pipe under your house?
What to do if you have got a leaking pipe under your house. Once you’re sure there is a leak there are a few simple next steps to take. 1. Establish the location of the leak. The first step is to establish where the leak (s) are located. If you see or hear water in one particular section of your floor, you might be able to take an educated guess, ...
How to detect a leak in a small pipe?
To detect leaks in the small pipes that bring pressurised water to your home, the water is often turned off and air is pumped into the lines to force out the remaining water. This allows the plumber to listen for escaping air from the damaged pipe. 2. Arm yourself with numerous quotes and information.
Can water leaks under slabs be hidden?
While water leaks under house slabs are notoriously good at remaining hidden from the untrained eye, knowing what to look for and regularly checking can help you get on top of things before they do too much damage.
What happens when water is leaking from a pipe under a concrete slab?
Additionally, if warm water is leaking from a pipe under your slab, it can create hot spots or small pools of water on the concrete floor. Sounds of leaking or running water: When a faucet is on, you can hear the water running through the pipes in your home.
What causes a slab leak?
When there is a break in a pipe that runs under the concrete foundation of your home, a slab leak is in full effect. From the break or crack in the water or sewer pipe line, water or waste seeps into the ground and your foundation. Because of the extensive damage broken drain pipes under basement, garage and other slab floors can cause, ...
How to tell if a concrete slab is leaking?
Warm or wet spots on the concrete floor: Because slabs are porous, you may be able to tell there’s a sewer line break just by looking at the floor. If there is a large water or damp spot, it’s more than likely a slab leak. Additionally, if warm water is leaking from a pipe under your slab, it can create hot spots or small pools ...
What is a slab floor?
If you have a basement or garage, these two spaces are more than likely built on slab floors. A slab is essentially concrete poured over leveled ground. Sewer systems and drain pipes may run beneath the slab.
Can a water leak be under a slab?
A high water bill does not necessarily mean there’s a slab leak, though. If the plumbing inside your home seems sound, then you could have an unseen slab leak beneath your home’s foundation. If you suspect you have a broken drain pipe under your basement, garage or other slab flooring, it’s crucial to contact a licensed team ...
What type of pipe is used under a slab?
The most common type of pipe used for water lines under a slab foundation is copper tubing. As copper pipes age, they are prone to wearing thin and springing a leak. To repair a copper pipe you must cut the damaged section of pipe with a hacksaw, reciprocating saw or tubing cutter and remove it. A new piece of tubing combined with copper couplings is soldered into place.
What is a leaking pipe under a foundation?
If you have a leaking pipe underneath your foundation, it is either a water or sewer line. Repairing the damaged line is not that hard, however locating and gaining access to it is a different matter. Once you locate the general area of the leak, you will have to cut and chisel your way through the concrete to repair the pipes.
What happens when water is turned off?
After the water is turned off, air is pumped into the lines to force out remaining water. This allows the plumber to listen for escaping air from the damaged pipe. Once the leak is identified, the plumber can ascertain the best way to go about repairing it.
What happens if you walk on hot water lines?
Leaking hot water lines can create warm spots on your floor. Walking around inside your home barefooted will expose the location of a leaking hot water line. The second giveaway alerting you that your water lines are leaking is the sound of rushing water underneath your floor.
Is it better to re-plumb a house?
Sometimes it is better to re-plumb the entire house rather than waste money repairing old plumbing. This is recommended when a home is plumbed with old galvanized piping. Repairing those old pipes is often not cost effective because they are extremely hard to fix and will continue to spring leaks as they age.
Can rubber boots be used under concrete?
Although special rubber couplings are ideal for connecting different types of pipes they are not recommended for use underneath concrete slabs. The rubber boots can deteriorate over time, especially when they are used outdoors.
Can a sewer line cause heaving?
Most leaks in a sewer line go undetected until there are visible signs of foundation damage. In areas with expansive soil, a leaking sewer line can cause heaving, which is when the slab swells enough to lift the building.
What is a slab leak?
A slab leak refers to a leak in the plumbing beneath your home’s slab, or the concrete foundation on top of which the rest of your home is built. In houses where the water lines are embedded within concrete slab, plumbing leaks often go undetected.
Does homeowners insurance cover slab leaks?
Homeowners insurance covers the basic structure of your house — including its slab and the rest of your home’s foundation — in the event that it’s damaged by a covered peril. That means if your slab cracks and the cause of the damage is covered by your policy, your homeowners insurance will pay to remove the slab and replace it.
Does homeowners insurance cover plumbing breaks under slab?
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 you find out that your pipes are broken but there isn’t any actual damage to your slab, you’ll likely have to pay out of pocket to tear out the slab and repair or replace the broken pipes.
How to tell if you have a slab leak
If your home has a slab leak, you’ll likely know if you begin to notice any of the following:
How much does it cost to repair a slab leak?
Most homeowners pay an average of $2,280 for slab leak repairs, according to Home Advisor.
