Foundation Crack Repair in Tennessee

A crack in the basement or crawl space wall is the most common reason people start looking into foundation repair. Here is how to tell what kind you have, what the repair options are, and when a crack is a sign of something bigger.

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About 43.5% of Tennessee sits on karst or rock that can form it (USGS)
Jobs of $25,000+ need a Tennessee contractor license
Tennessee insurers must offer optional sinkhole coverage
Symptoms are not a diagnosis: an on-site evaluation comes first

Last updated: 2026-10-12

Tennessee Foundation Repair connects Tennessee property owners with participating contractors for foundation crack repair. Plenty of foundation cracks are cosmetic: concrete shrinks as it cures, and hairline cracks are common in poured walls. Others are the visible end of a settling footing or a wall being pushed by wet soil. The repair depends on which one you have, and that takes an on-site look.

Types of foundation cracks

Location, direction, and width tell a contractor where to start looking. They are clues, not a diagnosis:

Hairline and vertical cracks in poured concrete: often shrinkage cracks from curing. Commonly sealed if they leak.
Diagonal cracks: running from a corner or window at an angle can point to one part of the foundation settling more than another.
Stair-step cracks in block or brick: following the mortar joints, often linked to settlement or soil pressure.
Horizontal cracks in a basement wall: often linked to soil pressing on the outside of the wall, especially with block. Treat these as structural until someone qualified says otherwise. See bowing wall repair.
Cracks wider at one end, or with one side offset: suggest movement and deserve a closer look.

Repair methods for foundation cracks

The method depends on the wall material and whether the crack is still moving:

Epoxy injection: bonds the two sides of a crack in poured concrete. Used where the crack is stable and some strength across it is wanted.
Polyurethane injection: flexible foam that seals a crack against water; common for leaking, non-structural cracks.
Carbon fiber stitches or straps: reinforce across a crack or along a wall.
Repointing or rebuilding: for block and brick, replacing failed mortar or rebuilding a damaged section.
Fixing the cause: if the crack comes from settlement or wall pressure, sealing it alone will not hold. That means piers, wall anchors or braces, or drainage work first.

Watching a crack before you decide

For a thin, dry crack, monitoring is reasonable. Photograph it with a ruler for scale, mark the ends with a pencil and date them, and check again after a few months and after heavy rain. A crack that stays the same is a different conversation from one that grows. Do not fill or paint over a crack before a contractor sees it; that hides the evidence.

Cracks and water

A leaking crack is a water problem first and may or may not be structural. Waterproofing and basement drainage are related services that may be handled by different contractors and may not be included in every referral, so say clearly when you call whether you have water, movement, or both.

When a crack is worth a professional look

It is horizontal, or the wall around it bows inward.
It is wider than about a quarter inch, or wider at one end.
One side of the crack sits out of line with the other.
It has grown since you first noticed it.
It appeared along with sticking doors, sloping floors, or gaps around windows.
Water comes through it when it rains.

What foundation crack repair costs

HomeAdvisor's June 2026 data puts sealing foundation cracks at $250 to $800. Cracks caused by settlement or wall pressure cost more because the cause has to be fixed too: piers run $1,000 to $3,000 each, and bowing walls $4,000 to $12,000, per the same data. Waterproofing runs $2,000 to $7,000.

Number and length of cracks.
Wall material: poured concrete is usually injected; block and brick may need repointing or rebuilding.
Access: finished basement walls may need drywall removed.
Whether the cause also needs repair.

Injection ports spaced along a sealed vertical crack in a gray poured concrete foundation wall

What you can do right now

Photograph the crack with a ruler or coin for scale, and date it.
Mark both ends with a pencil so you can tell if it grows.
Note whether it leaks after rain.
Leave it unfilled until a contractor sees it.
Call and describe the crack: direction, width, wall material, and any water.

Questions to ask about crack repair

Do you think this crack is structural or from shrinkage, and why?
Is it still moving? How can you tell?
Epoxy or polyurethane, and why that one for this crack?
If the crack is a symptom, what would fix the cause?
What does the warranty cover if the crack reopens or leaks?

Related foundation repair guides

Straight answers

What you can do vs. when to get a professional evaluation

Watching, measuring, and fixing drainage are things a homeowner can do. Diagnosing the cause and repairing structure are not.

What you are seeing	What you can do now	When to get a professional evaluation
A thin vertical crack in a poured concrete wall	Photograph it with a ruler or coin for scale and date the photo; check it again after a few months and after heavy rain	It widens, one side sits higher than the other, or water comes through
Stair-step cracks in block or brick	Photograph and date them; note any doors or windows nearby that stick	The cracks are getting longer or wider, or bricks or blocks have shifted out of line
A basement wall leaning or bowing inward	Keep the area clear and dry; do not try to push or brace it yourself	Always: horizontal cracks and inward bowing are a structural question
Sloping or bouncy floors over a crawl space	Look (safely) for standing water or wet wood; note where the floor dips	Floors are getting worse, posts or beams look damaged, or wood is soft or rotted
Doors and windows suddenly sticking	Note which ones and when; seasonal humidity can do this too	Several stick at once, with new cracks above the frames
A depression or hole opening near the house	Keep people and pets away; on public land or a road, report it to local officials	Always, and call 911 if a building is moving or there is any immediate danger (TEMA)

General guidance, not a diagnosis. Safety steps follow the Tennessee Emergency Management Agency'sgeological hazards guidance. Never jack, cut, or remove a structural support yourself.

What to expect

What foundation crack repair usually involves

Every house and every foundation problem is different. These are the stages most foundation repair projects follow.

An on-site evaluation
A foundation repair contractor looks at the cracks, floors, doors, walls, crawl space or basement, and the drainage around the house, and may measure how level the floors are. Symptoms alone do not tell anyone the cause; the visit is where that starts.
A written repair plan and price
Ask for the proposed repair, why it fits the cause they found, how many piers or supports and where, any permit, and the price in writing before work starts. In Tennessee, jobs of $25,000 or more need a state contractor license.
An engineer, when the situation calls for one
For major movement, a sinkhole near the house, a home sale, or two contractors who disagree, an independent licensed structural engineer can assess the cause and specify the repair. Contractors are not engineers unless they say so and are licensed as one.
The repair
Depending on the cause, that can mean piers or underpinning, wall anchors or braces, crack injection, added crawl space supports, or drainage changes. Ask how long it will take and what access is needed.
Warranty and paperwork
Get the warranty in writing: what it covers, for how long, and whether it transfers to a buyer. Keep the plan, invoices, permit, and any engineer report together; buyers and inspectors ask for them.

How the referral works

How our contractor-matching service works

You call the number on this site
Have the property address or ZIP code ready, plus what you are seeing: cracks, sloping floors, sticking doors, a bowing wall, and how long it has been going on.
Your call is routed to a participating contractor
Your call is connected with a participating independent foundation repair contractor who serves your area, if one is available. We do not inspect or send anyone ourselves.
You deal with that contractor directly
The contractor evaluates the house, recommends a repair, quotes the price, and does any work you agree to under their own business name, license, insurance, and warranty. You decide whether to hire them; there is no obligation.

Good to know: availability and eligible services depend on which participating contractors cover your ZIP code. Whoever you hire, ask for their Tennessee license number (if the job needs one) and check it with the state's license verification search. Our hiring questions cover the rest.

Get Foundation Crack Repair Help

Call and we will try to connect you with a participating independent foundation repair contractor who serves your area.

Call (865) 276-7293

Questions

Foundation Crack Repair questions

Are foundation cracks serious?

Some are and many are not. Hairline vertical cracks in poured concrete are often from shrinkage. Horizontal cracks, stair-step cracks in block, cracks wider at one end, and cracks that keep growing are more likely to signal movement and deserve a professional evaluation.

How much does foundation crack repair cost?

HomeAdvisor's June 2026 data puts crack sealing at $250 to $800. If the crack is caused by settlement or wall pressure, the cause has to be repaired too, which costs more.

Can I fix a foundation crack myself?

You can monitor it and keep water away from the house. Sealing a crack yourself can hide whether it is still moving, and structural cracks need the cause addressed by a qualified contractor. Get it looked at before you fill it.

What is the difference between horizontal and vertical foundation cracks?

Vertical cracks in poured walls are often from concrete shrinking as it cures. Horizontal cracks in a basement wall are more often linked to soil pressure pushing the wall inward and are treated as a structural concern until evaluated.

Do I need a structural engineer or a foundation repair contractor?

Sometimes both. A contractor evaluates the house and proposes the repair they install. An independent licensed structural engineer assesses the cause and can specify a repair without selling one; HomeAdvisor puts a structural engineer inspection at $340 to $780. An engineer is worth it for major movement, a sinkhole near the house, a home sale, or contractors who disagree.

Related foundation repair services

Bowing Foundation Wall Repair

A basement wall that leans or bows inward is being pushed by the soil outside it. Here is why that happens, how anchors, braces, and carbon fiber compare, and why this is not a wait-and-see problem.

Foundation Settlement Repair and Stabilization

When part of a house sinks lower than the rest, the job is to stop the movement first and level what can be leveled second. Here is how settlement repair and foundation stabilization work, and what is different about Tennessee ground.

Foundation Repair Services

Cracks, sloping floors, sticking doors, or a wall that has moved. Here is what foundation repair services involve, which repair fits which problem, and what the work typically costs.