Foundation Repair

Foundation Or Slab Heaving (Upheaval)

diagram of foundation slab that is experiencing upheaval

Foundation upheaval can lift an entire structure, but more often it forces parts of a foundation or slab upwards, while other sections remain stationary. Either way, the damage that results will require the expertise of a foundation repair specialist

The Problem:

Your foundation or slab floor is moving upwards, leading to cracks in the walls and floors of your home.

Telltale Signs:

How to Fix It:

Solutions can be as simple as repairing a plumbing leak under your foundation -- or as extensive as demolishing and then reconstructing damaged sections of foundations or slabs..

A certified foundation contractor is the best person to evaluate foundation heaving problems and suggest suitable solutions.

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We solve foundation heave problems! Call us for a free slab or foundation upheaval repair quote today!

We serve Saint Paul, Minneapolis, Duluth, and many nearby areas in Minnesota and Wisconsin.

What Causes Foundation Upheaval?

Heave is the upward movement of a foundation or slab caused by underlying soils that expand or swell. This occurs due to an increase in moisture or by freezing forces. Heave is more common with slabs than foundations because slabs have less weight to resist heaving forces. Unless there is a long period of drought, heave most commonly occurs within the first few years of the building's construction.

Slab and foundation heave are most commonly caused by these four forces:

samples of wet and dry clay

Expansive Soils

A house built on soils with high clay content will be susceptible to heaving forces because clay-rich soil expands significantly when it gets wet.

The excavation for a foundation often gives the soil around and under a house a chance to dry out and shrink, as shown in the photo at right. After the house is built, clay-rich soil that gets soaked during wet spells can cause heaving problems, while also damaging foundation walls.


Frost on a grassy hill with a frost-covered tree.

Frost Heave

Water increases about 9% in volume when it freezes, wet soil can expand by at least that amount upon freezing. When this happens, the resulting pressure on a slab or foundation can cause it to shift and crack.

The colder the temperature, the deeper the soil will freeze. In frigid temperatures, foundations that were not built below the "frost" or freezing line.

Frost forces can lift a foundation upwards dramatically, sometimes by several inches or more, leading to serious frost heaving damage. to a foundation.


Diagram of a broken pipe underneath a foundation slab.

Plumbing Leaks

Leaks in plumbing lines that run underneath a concrete slab or through a foundation wall can deposit moisture underneath the foundation and slab. This moisture can be from supply lines, waste lines, or even HVAC systems.

Over time, this moisture can cause the soils underneath the foundation to expand, which will then cause them to push up on the structure above.


Heavy rains in a downpour in Princeton.

Prolonged Or Heavy Precipitation

Too much precipitation combined with too little drainage away from the house will lead to increased moisture underneath your foundation. Moisture that comes into contact with expansive soil can result in heaving of your foundation and slabs.

Precipitation can also cause expansion in the soils on the sides of your foundation, leading to bowing, buckling walls.

What NOT To Do:

cracks in a slab floor consistent with slab heave in Sartell.

Cracks on floor slabs that are caused by foundation heave are unique in appearance.

You will see multiple cracks that come together to a point or form an enclosed loop where the heave is greatest.

Before doing any repairs to your foundation, it's important to identify the problem as heaving.

Some contractors who have not been fully educated on the signs of heave can easily misread the cracks in your home and suggest the wrong solution.

The problem? While heave is the opposite of foundation settlement, the symptoms are often similar. To an untrained eye, it may appear that the exterior walls are going down -- — when what's really happening is that the basement slab is being pushed up near the center of the house.

To apply the right solution to a foundation problem, make sure you're getting the right diagnosis.

More about sinking concrete slab floors.

Repairing Heave Damage

Start by having an experienced foundation repair specialist inspect your foundation issue and identify what is causing your problem.

Once the problem is identified, a customized solution can be proposed to repair the damage and address the cause of the issue.

We Do Foundation Heave Repair in MN and WI!

At Foundation Supportworks Solutions, we have the tools and training available to fix foundations and slabs that are experience problems with upheaval.

We offer foundation and slab heave repair quotes to all within our Minnesota and Wisconsin service area. If you would like to schedule an free, no-obligation appointment with one of our foundation specialists, call or e-mail us today!

We proudly serve Duluth, Saint Paul, Minneapolis, surrounding areas such as Eau Claire, Saint Cloud, Superior, Chippewa Falls, Brainerd, Marshfield, Menomonie, and nearby.

Looking for a price? Get a no cost, no obligation free estimate.

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Serving MN and WI
Our Minnesota and Wisconsin Service Area
Cities in Gogebic County, MI
Bessemer
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Cities in Aitkin County, MN
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Minneapolis
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Foley
Gilman
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Barnum
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Carver
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Norwood Young America
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Bena
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Outing
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Almelund
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Grand Marais
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Lutsen
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Deerwood
Emily
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Nisswa
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Minneapolis
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Cities in Isanti County, MN
Braham
Cambridge
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Balsam
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Deer River
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Max
Nashwauk
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Spring Lake
Squaw Lake
Swan River
Talmoon
Warba
Wirt

Cities in Kanabec County, MN
Mora

Cities in Koochiching County, MN
Big Falls
Birchdale
International Falls
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Loman
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Cities in Lake County, MN
Finland
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Silver Bay
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Cities in Mille Lacs County, MN
Isle
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Pease
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Cities in Morrison County, MN
Hillman
Pierz

Cities in Pine County, MN
Askov
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Sturgeon Lake
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Cities in Ramsey County, MN
Saint Paul

Cities in Saint Louis County, MN
Alborn
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Arnold
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Brookston
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Chisholm
Cook
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Crane Lake
Culver
Duluth
Elmer
Ely
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Eveleth
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Forbes
Gilbert
Grand Lake
Hermantown
Hibbing
Hoyt Lakes
Iron
Kelsey
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Makinen
Mckinley
Meadowlands
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Orr
Payne
Proctor
Saginaw
Side Lake
Toivola
Tower
Virginia

Cities in Sherburne County, MN
Becker
Big Lake
Clear Lake
Elk River
Saint Cloud
Santiago
Zimmerman

Cities in Stearns County, MN
Albany
Avon
Belgrade
Brooten
Cold Spring
Collegeville
Elrosa
Freeport
Greenwald
Holdingford
Kimball
Melrose
New Munich
Paynesville
Richmond
Rockville
Roscoe
Saint Cloud
Saint Joseph
Saint Martin
Saint Stephen
Sartell
Sauk Centre
Waite Park

Cities in Washington County, MN
Hugo
Lake Elmo
Lakeland
Marine On Saint Croix
Newport
Saint Paul
Saint Paul Park
Scandia
Stillwater
Willernie

Cities in Wright County, MN
Albertville
Annandale
Buffalo
Clearwater
Cokato
Delano
Hanover
Howard Lake
Maple Lake
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Montrose
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Saint Michael
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Cities in Ashland County, WI
Ashland
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Clam Lake
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La Pointe
Marengo
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Almena
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Chetek
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Mondovi

Cities in Burnett County, WI
Danbury
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Cities in Chippewa County, WI
Bloomer
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Cities in Clark County, WI
Abbotsford
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Dorchester
Granton
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Humbird
Loyal
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Owen
Thorp
Willard
Withee

Cities in Douglas County, WI
Brule
Foxboro
Gordon
Lake Nebagamon
Maple
Poplar
Solon Springs
South Range
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Cities in Dunn County, WI
Boyceville
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Knapp
Menomonie
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Cities in Eau Claire County, WI
Altoona
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Fairchild
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Cities in Iron County, WI
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Cities in Marathon County, WI
Athens
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Cities in Pepin County, WI
Durand

Cities in Pierce County, WI
Elmwood
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Cities in Polk County, WI
Amery
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Cities in Price County, WI
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Kennan
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Phillips
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Cities in Rusk County, WI
Bruce
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Tony
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Couderay
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Gilman
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Cities in Trempealeau County, WI
Eleva
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Cities in Washburn County, WI
Birchwood
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Shell Lake
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Trego

Cities in Wood County, WI
Hewitt
Marshfield

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