You have actually just been educated that there is a leak in or under your slab foundation that requires pipes repair. Maybe your psychic goes to visions that jackhammers dancing in her head (not together nice together sugarplums no issue what time the year that is). Or probably you space not certain what to expect at all, other than that it sounds messy.

You are watching: How to tunnel under a house

Just imagine every the mess the would an outcome from someone breaking a hole in the floor that your home with a jackhammer. That room i do not care a catastrophe zone and also then you need to clean up a large mess. It’s in the kitchen too, and you probably won’t be able to use that room because that a while for this reason . . . What if i told friend it didn’t have to be that way?

There’s this *new thing* (it’s not really new, yet a lot of of civilization don’t know about it) called under-slab tunneling that keeps every the chaos away and permits you to continue using your residence as usual. This technique allows for any repairs that must be excellent underneath and outside the home to be completed with no holes or debris inside the house. Seems choose a vast plus, right?

At Anchor foundation Repair, under-slab tunneling is just one of our main services and we routinely tunnel under homes. Due to the fact that we carry out this quite a bit, our team of professional experts knows the ideal techniques to remove and also then change the dust under your home with future security in psychic at all times.

About 35 to 40% of our home foundation repairs incorporate the require for tunneling. Various other times, houses just need tunneling only, just to help the plumber gain accessibility to the fix point. One of two people way, we have a good deal of endure creating and also filling ideal tunnels—making under-slab tunneling among our specialties.


Although Anchor structure Repair go not solve the plumbing difficulty under your slab, we clear the way to make it straightforward for her plumber come reach. We likewise keep the appropriate care of your home as our greatest priority.

In this article, us will define the special characteristics, the process, and also estimated expenses of tunneling under her home. We carry out this to aid you decide if under-slab tunneling is a workable option to manage your essential plumbing repair.

What is under-slab tunneling?

It sound complicated, but it’s pretty straightforward. A crew would dig under the concrete slab foundation of your house to with a details point where pipes repairs have to be made. Castle use devoted shovels and tons of tough dirty job-related to destruction a precise 3-foot by 3-foot square tunnel under her home.

Your plumber and also your foundation repair specialist will construct a setup together the reaches the needed location using the shortest size of tunnel possible. Maintaining the tunnel as short as possible ensures the lowest cost and the fastest, most effective route.

The quickest means from one ar to another is the shortest, straightest line without obstructions. Things like patios, sidewalks, decks, or other hardscaping are instances of obstructions the can reason a different starting point in some cases.

Or probably there is a tree or air conditioning unit that would certainly be in the method or in which method be jeopardized by the digging, the beginning location can be relocated farther out. But the goal is constantly the shortest and fastest tunnel length.

How long does it take to dig a tunnel?

On average, a tunneling crew have the right to dig around 5 come 8 feet per day. An mean tunneling job can be about 10 come 15 feet long, taking 2 to 3 days to complete. This all depends on where the under-slab pipes leak is located and how big the residence is in the an initial place. The Anchor crew has dug tunnels as long as 70 to 90 feet, however that is unusual.

The excavated tunnel permits the plumber to accessibility and repair the pipes lines under the home from the exterior rather 보다 inside. The most typical issue needing fix are drainpipe lines leaking underneath the foundation.

Mighty good lookin’ tunnel.

Why use under-slab tunneling?

The #1 benefit of using under-slab tunneling is the there is no mess inside the residence when repairing a pipes issue. Having actually under-slab pipes fixed without tunneling have the right to be intrusive come your daily life in many ways.

A catastrophe zone ideal describes what a house looks like while having actually portions that the structure torn up for under-slab plumbing repair. A crew would jackhammer v the concrete, developing excessive noise, dust, and also debris. So much for naps and Zoom meetings . . .

Dirt will certainly be piled somewhere nearby the accessibility point and you would likely need to stop the area completely during the entire process. Due to the fact that we know that this fix is to deal with plumbing issues, the area you have to avoid in your home is probably a kitchen, bathroom, or to wash room. You no really must shower, did you?

Not to point out all the human being that will be coming in and out the your house to perform all this work. Sounds fun, right?

On peak of having actually the chaos in your home, exactly how long the repair takes will be just how long you need to live v that huge hole in the floor. You might even consider moving out temporarily to stop living in the situation. The is an included cost or inconvenience as well.

Using under-slab tunneling avoids all these problems. We’re a big fan the tunneling in case you couldn’t tell.

Under-slab tunneling move the mess and disaster zone outside. Under-slab tunneling allows the plumber to move easily underneath the structure of a residence to do the needed repairs. Meanwhile, you deserve to be within the home living normally: cooking, bathing, Zooming, and/or napping . . . don’t forget the napping . . .

Have a plumber determine the precise location of all plumbing failures.

It’s crucial to know where the plumbing is failing because that sure. All tunneling work depend upon getting to a specific location or areas under the home. The cost and time the takes come tunnel all depend on the length of the tunnel needed. So definitely get that information prior to moving to the next step.

How go under-slab tunneling work?

When a professional structure repair crew performs the work, under-slab tunneling is a safe and effective way to fix any kind of of a home’s underground plumbing issues. As soon as the plumber knows and locates the suggest of failure, the work can begin from the planned beginning point.

Step 1: Digging the Tunnel

The crew will very first dig right down to gain underneath the exterior wall of the home. The exterior wall surface has a support beam under it that carries the load of the side that the home and penetrates into the ground. Depending on the home’s age, the vertical hole could be indigenous 3 come 6 feet deep to gain all the method underneath that beam and to the other side of that very first underground hurdle.

Once they get fully under and past the exterior wall’s assistance beam, the tunnel will go back to vertical and also go up till the bottom the the concrete floor or slab is reached. This is the underside of your foundation, which will certainly then become the “ceiling” that the tunnel. This create the safest tunneling setting by eliminating the possibility of dirt falling on a person or creating a cave-in.

The crew will certainly then rotate horizontal again and also continue digging out a 3-foot through 3-foot tunnel to the pipes failure point. This permits plenty that room for the plumber and any tools necessary to be carried down because that the pipes job. The tunneling team’s task is climate on organize until the completion of the pipes repair.

Do friend really desire to destruction this tunnel?

Please note: asking an untrained person to destruction a tunnel under your residence is never a great idea. It’s means more 보다 just difficult work the “anyone v a shovel” deserve to do. While you can hire a job laborer, they would not have the suffer or ability to dig or backfill properly.

Digging a tunnel prefer this is really hard work and also requires skill to obtain it excellent quickly and well. If someone through no experience tries to handle it, they start to see that that is too lot for them to handle.

We had one actual customer shot to destruction his own tunnel and he offered up after a couple of days once he establish how difficult it was. Plenty of times we have likewise had to bail out a plumber that thought they could do that themselves and also we to be asked to take over the tunneling part of the task for them.

Step 2: Repairing the plumbing Problem

A plumber that your an option will then pertained to complete the repairs, as lengthy as they room comfortable through working in a tunnel together some might not. If you carry out not have a unique plumber in mind, us can also recommend one because that you that has experience with under-slab tunnel work.

A reputable foundation repair crew would certainly ideally coordinate v the plumbing contractor to ensure the timelines accomplish up and also should aid to save your repair moving quickly.

Pressure trial and error of the repaired pipes lines is done to make certain that every little thing is sealed increase well and no more leaks room detected. Sealed plumbing lines are really important come the next step of the process and the continued health of your foundation.

Step 3: pour it until it is full in the Tunnel

Once repairs and pressure trial and error have proven successful, the tunneling crew will return to fill in the tunnel correctly, using both the removed dirt as well as brand-new dirt together needed. This is where the specialization of having a foundation repair company do the tunneling comes right into play.

Mud-pumping device at work

A foundation repair agency tunneling underneath your residence will have actually the right mindset for the future stability of your home’s foundation. Through this at the forefront, the team will start to to fill in the tunnel with the excavated fill that was previously removed.

Once the tunnel is filled and the start hole sealed off, the last step is called mud-pumping, which gives the many thorough support under your home. Mud-pumping sends a mix of Portland Cement, sifted topsoil, and also water with pressure under the slab.

This finishing procedure allows for also the the smallest pocket of room to it is in filled correctly and provides proper support to her concrete slab foundation. This final mud-pumping step is one of the most important to minimize any opportunity because that future settlement, erosion, or movement of the structure as a result of the tunneling process.

How much does under-slab tunneling cost?

Like many repairs needed approximately the home, the expense will vary relying on each situation. Many commonly, under-slab tunneling is priced by the foot i beg your pardon is why the precise location is important. The price per foot is a great place to start as soon as estimating the cost of tunneling.

Expect the price the tunneling to autumn somewhere in the $200-$500 every foot range. This price suggest will differ from company to firm and ar to location. These individual situations make pricing for tunneling shake and likewise depends on the cost of materials in a particular area.


A common example could be a timeless hall bathroom, needing around 8 to 10 feet of tunneling. A chart is presented here the illustrates whereby the plumbing drain lines are situated (by the blue lines) and also where the tunnel would be produced (by the red rectangle) to accessibility all three of the drain lines in this example bathroom.

The price of the tunneling, backfilling, and also mud-pumping services in this example would it is in somewhere in between $3,000-$4,000. This price is based upon the regional area the Bryan/College Station and typical tunneling needs for this hall bath example.

The cost of a finish project will additionally vary based upon the lot of repair required to be done to the home’s plumbing. The expense for the plumbing repairs would be established by the plumber and be in enhancement to the tunneling cost.

Is under-slab tunneling best for her home?

Under-slab tunneling is more desirable to some homeowners. As stated earlier, one significant advantage is that there is no mess and no tearing increase the floor of the home. If you have actually recently renovated her flooring, you probably don’t want to undo all the nice work.

Newly renovated homes will benefit the most from under-slab tunneling, and a homeowner that wishes to remain in the home throughout all the repairs.

By contrast, a homeowner the is already in the center of an active renovation (i.e. You can be living in other places at the moment) might use the “jackhammering and also breaking through the slab native above” method. This method can expense less, and you i will not ~ mind the mess, because you’re no there do the efforts to usage the home. Or maybe your biggest determining variable is lowest cost, for this reason you could prefer the jackhammer technique for that reason.

Whether you are renovating, arrangement on renovating, or just don’t want your house to look choose a disaster zone making the temporarily unlivable, under-slab tunneling may be a good option for you. The advantage of living normally without significant life disruption while having a an important repair done to your home is unmatched.

Contact united state if you feel prepared to gain a bid because that under-slab tunneling.

You now understand the clues under your house that need access. Therefore if you think you would favor under-slab tunneling as the best way to access those plumbing repairs, reach out to us for a bid.

At Anchor structure Repair, we deserve to expertly manage your under-slab tunneling demands with care. We do tunneling as part of structure repair jobs, but likewise on its own if all you require is a method for plumbers to gain under your house to finish a repair.

See more: Huge Blisters On Bottom Of Feet, Blisters On Feet: Causes And Treatments

Although Anchor walk not resolve the really plumbing concerns (we let the plumbing specialists do their part), we have the right to recommend some an excellent plumbers in the area. Us love working with plumbers of truth who recognize our process and the prestige of act the project in the least intrusive and also most stable method for you and also your home.

Our score is always to carry out the homeowner through the best possible repair because that now and with the future in mind. Along with providing excellent repairs, we likewise want to offer an excellent information. If you space experiencing any signs of foundation damage or simply need tunneling because that plumbers to access your under-slab pipes problem, now is the time to contact us!