Repairing Guides

how to repair sewer line under slab

by Prof. Garland Murazik Published 3 years ago Updated 2 years ago
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Steps for repairing a sewer pipe

  • Insert a video inspection tool into the sewer pipe and look for evidence of tree roots growing inside the pipe.
  • Attach a cutter head onto the end of an electric drain snake. ...
  • Mix two-part epoxy in a clean bucket using an electric drill and mixing paddle.
  • Use a traffic cone as a funnel to pour the epoxy into the polyester pipe liner.

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Part of a video titled How to Repair a Sewer Pipe Under a Concrete Slab - YouTube
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5:12
Down 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.

Full Answer

What to consider when you replace a sewer line?

  • You have recurring issues with your sewer line. If you’ve had to repair your sewer line multiple times recently or had to continuously clear out clogs, it’s possible it will ...
  • Your sewer line is old. ...
  • You have a significant amount of damage to your sewer line. ...
  • Your sewer fails an inspection. ...

What should I pay to replace a sewer line?

  • Drain backups or persistent slow drainage
  • Gurgling sounds in drains
  • Foul sewage odors
  • Pools of water on your lawn
  • Flooding septic waste in your yard
  • Foundation problems

How to repair a sewer pipe under a concrete slab?

  • tile and concrete cutting (anywhere from $30 to $50/lineal metre cut or $125-$135/hour with minimum call outs of $250)
  • excavation of broken or damaged pipes ($40-$100/hour depending on whether you have another tradesman to dig or if you leave it to the plumber)
  • removal and replacement of any bathroom fittings required

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How to know when to replace your sewer line?

  • Clay pipes can give way under pressure from tree roots, which then grow into the pipes. ...
  • Clay pipes are more susceptible to wearing down over time due to the pressures and temperatures running through them. ...
  • Clay pipes are more easily crushed during construction work or while heavy vehicles travel over them.

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How do you replace a sewer line under a basement floor?

0:1216:17sewer line under concrete slab repair - YouTubeYouTubeStart of suggested clipEnd of suggested clipOkay here's the project of the day. I have this existing slab underneath this slab i have a sewerMoreOkay here's the project of the day. I have this existing slab underneath this slab i have a sewer drain pipe coming from my toilet. Going out to the street.

How do you Repipe a house on a slab?

Repiping a house on a concrete slab typically requires several steps.Determine if there is reinforcing built into the slab. ... Acquire all permits necessary to do the work if required. ... Shut off the water supply lines.The team of plumbing technicians will reroute new pipes through walls or attic spaces.

How do you find a sewer line under a concrete slab?

1:028:09SIMPLE WAY TO FIND A SEWER LINE UNDER CONCRETE SLABYouTubeStart of suggested clipEnd of suggested clipSo what it is is it puts a signal into the line or conduit you're trying to locate and then withMoreSo what it is is it puts a signal into the line or conduit you're trying to locate and then with this wand you're able to go along and detect it under the slab or underground.

Do the plumbing pipes run under the floor slab?

Every home has drain pipes that lead to the city's sewer lines. Since plumbing uses gravity to help move things properly, you will find the plumbing underneath your concrete slab foundation.

Can you reroute plumbing in a slab foundation?

Many plumbing professionals may choose to reroute existing pipes that are located in a slab. While rerouting might be your only option, working with a professional who understands the logistics of is highly recommended.

How does plumbing work in 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 tell if my sewer line is collapsed?

Top 8 Telltale Signs of a Collapsed Sewer LineSlow drain.Frequent clogging and sewage backups.Sewer gas and foul odors.Surrounding soil is soggy.Lush patches of grass.Mold or mildew growing on your ceilings or walls.Foundation and wall cracks.Sewage pooling in your lawn.

How do I know if my yard is leaking sewer?

8 Broken Sewer Line SymptomsAn Odor of Sewer Gas. ... Slow Drains. ... Clogs and Backups. ... Lush, Green Lawn Area. ... Soggy Lawn. ... Insect and Rodent Infestation. ... Mold & Mildew. ... Broken Slabs and Wall Cracks.

How do you tell if you have a broken drain pipe?

4 Signs That Your Sewer Line Is BrokenSlow drains. A slow drain in one fixture usually means you have a simple clog that can be resolved with a plunger or drain snake. ... Weird odor or gassy smell. ... Mold and mildew. ... Crawlers and critters. ... Sewer line repair and replacement.

How do I fix a leaky slab pipe?

3 Options for Fixing a Slab LeakTrenchless Slab Leak Repair. Trenchless plumbing repair to fix a slab leak requires minor demolition. ... Pipe Re-Piping or Re-Routing. When multiple pipes are involved, plumbers often opt for re-piping. ... Tunneling Under the Slab.

What happens if water gets under concrete slab?

In addition to wasting water, the leak can damage the concrete and erode the soil around it. Over time, it may cause the foundation to buckle and shift, cracking the home's floors and walls. In severe cases, it can even cause portions of the house to collapse.

How common are slab leaks?

How Common Are Slab Leaks? Slab leaks are very common in areas where homes are older and built on concrete foundation slabs. Basically, slab leaks are extremely common throughout the United States. Well-trained plumbers are able to detect and diagnose slab leaks easily.

How long do copper pipes last in concrete?

This is because the copper pipes generally last 50 years or more. It is resistant to corrosion. It has anti-bacterial properties, and it is an economically and environmentally sound choice for potable water supply lines.

How do you stop slab leaks?

Here are a few ways you can prevent a slab leak from occurring.Learn the Warning Signs of a Slab Leak.Schedule a Plumbing Inspection.Maintain Proper Water Pressure.Pay Attention to the Trees Around Your House.

How long does it take to reline a cast iron drain?

Residential trenchless pipe relining of your cast iron or clay drains only takes a few hours and usually comes with a 50 year warranty. All the work is done from outside of the house and no digging has to occur.

How does trenchless pipe relining work?

This technology has been around for about 15 years for residential small diameter pipes. For larger pipes under roads and highways the technology has been around for about 30 years. It first came from Japan and Europe where they wanted to save structures that were thousands of years old. Learn more about pipe lining installation here.

How much does it cost to dig up a 3 bedroom house?

The reason is simple. The plumbers get to keep the all the money. Digging up a 3 bedroom 2 bathroom house typically costs $25,000, whereas pipe relining will cost about half that much. plumbers do not want to give up the $25,000 in revenues.

What are the disadvantages of digging under a building?

Another disadvantage of digging under a building is that a collapse could occur and people could die on your property. That has legal liability issues, apart from moral issues of having someone buried underneath your home.

Have you been told that your house has to be excavated to replace your old pipes?

Before & After Trenchless Cured In Place Pipe Lining (Internal diameter only reduced by 6%!)

How much does this trenchless drain repair under slab cost?

Trenchless drain repair under your slab costs about a $150 per linear foot and takes about two days to do, as opposed to two weeks for excavation for drain repair under the slab.

How to remove rust from cast iron pipe?

From outside of your property where the pipe cleanout access point is located, the pipe rust and scale is removed using a hydro jetter and a drain snake. Next we use a pipe video inspection camera to determine how long the break or crack in your cast iron pipe is.

What is the final new inner pipe?

The final new inner pipe is designed for load-bearing pipes that are located under roads, railways and building footers. If, for example, a section of clay or cast iron sewer pipe is missing, the new inner lining is designed to be a stand-alone pipe.

Is pipe lining faster than repiping?

Let’s not forget, since pipe lining requires no excavation, it is clean er, less invasive and much faster than repiping the old-f

Can you repair cast iron pipes under a slab?

The good news for you is that there are modern alternatives to repairing the cast iron drain pipes under your slab without having to excavate through the floor or digging from outside of your property. It’s also much less money to do the trenchless pipe repairs than by digging for pipe replacement.

How does the under-slab leak repair process work?

They use a combination of specialized visual and electronic techniques (such as remote cameras or listening devices), plus evaluation of the external traces that water leaks can leave based on extensive professional training.

How to detect a slab leak?

Here are some good times to perform slab leak detection: 1 Before undergoing foundation repair 2 After foundation work 3 At the sign of foundation problems 4 If you discover excessively moist areas underneath floor coverings 5 If you hear running water when water should not be in use (usually emanating from the bathroom) 6 Unusually high water bills 7 Before purchasing a new home 8 At least once annually (in climates prone to foundation cracks)

What causes under-slab leaks?

Homes are built to last, and we tend to think of them as immovable objects. In fact, houses and the earth beneath them are constantly moving, expanding and contracting with the seasons and all sorts of other natural forces. Over time, this repetitive motion can put a strain on vulnerable materials – especially pipes that pass under or through shifting concrete.

What are the top warning signs of an under-slab leak?

By their very nature, other kinds of under-slab leaks can remain hidden for a long time and may cause serious structural damage.

How to repair a leak in a pipe?

In some cases, smaller, localized leaks can be repaired by pouring an epoxy material into the affected line. This seals the leak without blocking the surrounding pipe and can be a relatively affordable (and time-saving) alternative to more complex and disruptive repair methods.

What is a sewer clean out?

A sewer clean out is a plumbing pipe, typically sticking out of the ground that has a removable plug and is found in the main sewer line . This pipe allows plumbers to clear out a blockage which may accumulate in the system and can also be used as an entry point during the slab leak detection phase.

How far can you tunnel under a concrete slab?

Qualified foundation repair specialists have the experience and equipment to tunnel as far as 100 feet beneath an affected concrete slab once they’ve confirmed the location of the leak. Not only is this approach far less invasive and destructive than jackhammering out portions of the slab, it also allows you and your family to stay in your home while repairs are underway. This method creates less noise, dirt and dust, maintains the structural integrity of your home, and also helps to protect your remaining undamaged flooring.

How do Plumbers Locate Pipe Breaks Beneath a Slab?

The best way to determine exactly where and what the problems are is through a video pipe inspection.

What is 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.

What happens if you have a broken drain pipe under your house?

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 of plumbers who are experienced in slab leaks.

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 avoid a trench in the middle of a house?

In order to avoid creating a large cavernous trench in the middle of your home, you might consider sewer pipe relining, or trenchless sewer repair. Instead of breaking up large amounts of concrete slab, only one access hole will need to be dug.

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 ...

Why is it important to detect a leak in a basement?

Because of the extensive damage broken drain pipes under basement, garage and other slab floors can cause, it’s vital to detect and quickly act on these types of leaks.

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