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CostHelper > Home and Garden  > Plumbing & Waterproofing > Slab Leak

Slab Leak Cost


How Much Does a Slab Leak Cost?

 
low costLeak Detection: $125-$400average costRerouting Pipe: $200-$5,000+high costFull Pipe Replacement: $2,000-$15,000+
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Many houses are built on a concrete slab foundation, a single layer of concrete several inches thick, usually resting on a bed of crushed gravel. Often, pressurized water pipes and sewer lines are installed under the foundation before the concrete slab is poured. These pipes can deteriorate over time (especially copper piping in acidic soil), creating what is known as a slab leak.

Slab leaks can be hard to detect. Symptoms include: a sudden spike in the water bill; a noticeable drop in water pressure; the constant sound of water running; damp carpeting or other flooring; foundation cracks or settling; and mildew in the walls or in the basement. If the leak is in a hot water line, the floor above it may feel warm to the touch. It's important to find and fix slab leaks as soon as possible.

Typical costs:

  • Detecting leakage and finding the site of a slab leak can require specialized equipment and skills, at a cost that can range from $125-$400. SlabLeakPro.com[1] in California, for example, offers water leak detection for a flat rate of $125, while SlabLeak.com in Texas charges $375. Some plumbing companies offer slab leak detection as part of their repair services, but many use contractors who specialize in slab leak detection.
  • Jack-hammering the concrete slab and repairing the leaking pipe typically costs a minimum of $500-$800, but can cost $1,000-$4,000 or more, depending on local rates, the extent of the problem and the ease of access. SlabLeak.com charges a minimum of $1,850 for a slab leak in a pressurized water pipe and a minimum of $2,500 for a slab leak in a sewer (drain) line.
  • If a pipe is deteriorating, repairing a leak in one section can put added pressure on the rest of the pipe, increasing the possibility of future slab leaks. One option is to close off the leaking line at the nearest manifold, and re-route a new pipe, usually above ground. In simple situations, costs for re-routing a short length of pipe can start at $200-$600, but more often will run $1,000-$3,000, and can go as high as $5,000 or more. SlabLeakPro[2] advertises re-routing starting at $550; in contrast, a homeowner[3] was quoted $1,650 to run a new line through a manifold inside a wall.
  • If the slab leak is just one symptom of a disintegrating plumbing system and it appears that leaks will continue to occur throughout the house, it might be time to replace all the pipes, which could cost $2,000-$15,000 or more. See How Much Does Replacing Copper Pipes Cost and How Much Does Sewer Line Replacement Cost.
  • If a leak is undetected and neglected for a long period of time, it can cause extensive water damage to the foundation and to the home's interior flooring, walls and furnishings. Repairs can cost from $100-$4,000, and much more if items such as a deck or porch have to be replaced. See How Much Does Dry Rot Cost and How Much Does Water Damage Cost.
  • Typically, homeowners insurance does not cover the cost of repairing the leaking pipe, rerouting pipes, re-plumbing the house or any foundation repairs, but may cover any water damage to flooring, carpeting, cabinets, personal belongings, etc., depending on the terms of the policy and the deductible amount.
Related articles: Water Damage Restoration, Flooded Basement, Foundation Repair, Debris Removal, Homeowner's Insurance

What should be included:
  • The overall system should be tested to confirm that there is a leak. Water lines are typically tested with a pressure gauge or compressor; sewer lines by blocking the outlet to the sewer main and filling the pipes with water. Identifying the specific location of any leaks may be done with various electronic listening devices or video cameras.
  • Repairing a slab leak typically requires removing any flooring material, breaking through the concrete foundation, cutting out the damaged pipe, installing new piping, then pouring new concrete and replacing the flooring.
  • Rerouting pipes involves locating and uncovering the nearest manifold, closing off the leaking line and running new pipes through an alternative location, such as the attic. If the main water supply enters the house through pipes under the slab foundation, and the secondary pipes coming off that main line are all aging, replacing the all the pipes might be the most efficient (but expensive) option.
Shopping for a slab leak:
  • Referrals are available from the Plumbing-Heating-Cooling Contractors Association[4] .
  • Get cost estimates from several firms. Check to see if the contractor is licensed[5] in all 50 states. Ask for (and check) references, and see if there are complaints with the Better Business Bureau[6] .
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What People Are Paying - Recent Comments
Hot Water supply line re-route
Amount: $3,060.00
Posted by: LookingForFairPrices in Plano, TX.Posted: February 7th, 2018 06:02AM
Type of Repair Needed: Attic hot water re-routeContractor: Classic Plumbing
Job very well done and under 7 man hours. Job did come in at the lower end of the estimate, but home owner essentially located and opened the manifold in advance and indicated the line to be re-routed.
Did not get much of a price break, but service was good after the half day wait.
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Hot Water Re-Route
Amount: $1,300.00
Posted by: A Smith in Dallas, TX.Posted: December 28th, 2017 11:12AM
Type of Repair Needed: Slab leakContractor: Wayne's Plumbing SVC
Rerouted the copper hot water line with PEX through the ceiling
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6 weeks to start, and never complete slab leak damages
Amount: $3,850.00
Posted by: DSlabby in Hesperia, CA.Posted: October 18th, 2017 04:10PM
Type of Repair Needed: re-routeContractor: Insurance provided
Hi, I was just trying to ascertain how much time it should NOT take to complete the repair of a slab leak (kitchen). Is a month to long ? We were made to wait for 6 weeks to go back home even after the leak was fixed (4 weeks) By someone I hired locally after the company hired by the ins. co. was still unable to give a completion date.. The local co. completed the job in 1 day. We were unable to bring in the appliances, because his people took all the toe kicks and moulding, which held up the installation of the new floor.80% of removed materiawas not damaged and some of it was expensive oak moulding. They didn't ask if we wanted to keep any of it. Other factors, such as after they came out and couldn't find the leak, they shut all but one outside spigot off and capped a pipe. A week later the pipe blew, so no water anywhere. I had to fix pipe myself after waiting for them 6 days. Then, Adjuster closed my claim and quit. Thank you. THEEND
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hot water leak detection and reroute
Amount: $2,550.00
Posted by: S Carter in Bedford, TX.Posted: September 7th, 2017 08:09AM
Type of Repair Needed: slab leakContractor: Jim England Plumbing
They said it's $1850 a day for repairing a slab leak through the concrete floor (usually multiple days of work), but $2550 for a reroute through the attic. The work includes detecting which line. It would be another $1250 if a second line needs to be routed. Sheetrock repair not included.
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Toilet supply line slab leak
Amount: $7,700.00
Posted by: Jim67 in Mckinney, TX.Posted: December 31st, 2016 08:12AM
Type of Repair Needed: Slab leakContractor: A1 Plumbing
The dig to the leak was too expensive(6100) and I feel I was over charged.
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Sewer line
Amount: $6,520.00
Posted by: Rosemary green in New Orleans, LA.Posted: September 10th, 2016 09:09PM
Type of Repair Needed: 30 ft sewer lineContractor: Roto-rooter
First the said told me 4,840 in now they found more problem they charge me another 1,720
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Hot water reroute
Amount: $2,950.01
Posted by: a user in Austin, TX.Posted: June 27th, 2016 05:06AM
Type of Repair Needed: Hot water rerouteContractor: RotoRooter
Took them aprox 5 hours from leak detection to fix, very little in parts - 2 workers - I would say RotoRooter is a massive rip off.
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Hot Water Supply Line Slab Leak
Amount: $6,164.00
Posted by: Jim Cubby in Plano, TX.Posted: April 26th, 2016 04:04PM
Type of Repair Needed: Dig/Jack Hammer floor. Replace pipeContractor: Berkeys
Still underway.
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Shower Slab leak repair
Amount: $1,900.00
Posted by: BP3 in Sacramento, CA.Posted: January 15th, 2016 08:01AM
Type of Repair Needed: Braise leaking pipe under foundationContractor: Ray Alirez
Very stressful situation. Price was reasonable considering alternate bids from other contractors.
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slab leak
Amount: $3,000.00
Posted by: H in Cleburne in Cleburne, TX.Posted: January 12th, 2016 10:01AM
Type of Repair Needed: Hole in ConcreteContractor:
Jackhammered the concrete after locating leak. Replaced copper pipe with pex for hot water leak.
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Hot water reroute
Amount: $2,519.00
Posted by: JH in McKinney, TX.Posted: July 8th, 2015 06:07PM
Type of Repair Needed: Hot water rerouteContractor: Baker Brothers
Friendly service, very knowledgeable and kept informed
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Excavation and replacement of slab leak from sewer pipe
Amount: $6,000.00
Posted by: Ti in Philadelphia, PA.Posted: May 27th, 2015 07:05PM
Type of Repair Needed: Break concrete, replace old pipeContractor: RotoRooter
The estimate was for 25 feet of pipe replaced, ended up replacing only 10 feet -- price did not drop. I've been massively overcharged!
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Hot water rerout
Amount: $4,490.00
Posted by: Msking in Vallejo, CA.Posted: March 21st, 2015 08:03AM
Type of Repair Needed: Rerouting hot water lineContractor: American leak detection
A very stressful situation
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External Resources:
  1.  www.slableakpro.com/
  2.  www.slableakpro.com/
  3.  www.bobvila.com/forums
  4.  www.phccweb.org/applications/ContractorReferral/search.cfm?navItemNumber=532
  5.  www.contractors-license.org/
  6.  www.bbb.org/us/Find-Business-Reviews/
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