Cracked, sunken or flaking concrete

Concrete Repair & Replacement in Waterloo, IA

Fix what can be fixed, replace what cannot, and deal with the water that caused it.

A site visit and a measured, itemized estimate at no charge
Exterior slabs get an air-entrained mix, a compacted stone base and planned joints
Permit and right-of-way rules looked up for your address first

Repair or Replace? An Honest Answer

Most concrete does not fail all at once. It starts with a crack, a sunken corner or a patch of flaking near the street, and it gets worse every winter. Concrete repair and replacement is about catching that early and choosing the fix that will actually last. We repair and replace driveways, walks, patios, steps and slabs across Waterloo and the Cedar Valley, and we will tell you plainly which option makes sense for your concrete.

What causes the damage

In Waterloo, the usual causes are water and cold. Moisture gets under a slab through open joints, cracks and poor drainage. When it freezes, it lifts the slab; when it thaws, the soil underneath is soft and the slab drops. Over the years the base washes out and panels sink or tip. On the surface, freeze-thaw cycles and road salt cause scaling, where the top layer flakes off and exposes the stone. Low ground near the Cedar River and its creeks, which saw record flooding in June 2008, tends to stay wetter and shows these problems sooner.

Repair options

Crack and joint sealing: a flexible sealant in cracks and joints keeps water out of the base. It is cheap and worth doing early.
Mudjacking: a cement-based slurry is pumped under a sunken slab to raise it back to level.
Foam leveling: a polyurethane foam does the same job through smaller holes and with a lighter material.
Patching: small chips and spalls, such as a broken step edge, can be patched with a repair mortar.
Section replacement: cutting out one or two bad panels and pouring new ones that tie into the rest.

When replacement is the better choice

Leveling and patching only work when the slab itself is in fair shape. We usually recommend replacement when:

The surface has scaled across large areas, not just a few spots
The slab is broken into many pieces or has cracks wider than about a quarter inch that keep growing
The slab slopes toward the house and lifting will not fix it
The base has washed out so badly that the slab will keep sinking
The concrete is old, thin and not air-entrained, which is common in a city where close to half the homes were built before 1960

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How replacement differs from the original job

When we replace a failed slab, we find out why it failed before we pour new concrete. If a downspout was dumping water at the edge, we move it. If the base was clay with no gravel, we dig it out and build a real base. If the slab tipped toward the house, we reset the grade. New concrete on the same bad base will fail the same way.

A note on sealing

Sealing does not fix damage, but it slows it. A penetrating sealer on sound concrete reduces how much water and salt soak in. Combined with sealed joints and good drainage, it is the cheapest way to keep a repaired or new slab in good shape through Iowa winters.

Call (319) 481-5867 or send photos with the form, and we will tell you what we see.

Repairs We Handle

We match the fix to the cause, not just the symptom.

Crack and joint sealing

Flexible sealant that keeps water out of the base.

Slab leveling

Mudjacking or foam to raise sunken walks, patios, steps and driveway panels.

Step and edge repair

Rebuilding chipped or crumbled step noses and slab edges.

Section replacement

Cutting out failed panels and pouring new ones that tie into the rest.

Full tear-out and replacement

Removing the whole slab, fixing the base and drainage, and pouring new.

Drainage fixes

Moving downspouts and regrading so water stops undermining the concrete.

Concrete Repair & Replacement in Waterloo, IA

Typical Repair and Replacement Costs

Item	Published range
Mudjacking, per sq ft	$4 to $9
Foam leveling, per sq ft	$8 to $25
Sidewalk leveling, 100 sq ft (mudjacking)	$400 to $900
Steps leveling, 40 sq ft (mudjacking)	$300 to $700
Partial driveway leveling, 200 sq ft (mudjacking)	$800 to $1,800
Extensive crack repair, per crack	$250 to $800+
Slab replacement, per sq ft	$6 to $15
Typical leveling minimum job fee	$300 to $700+

National ranges from HomeGuide's concrete leveling cost guide. The cause of the damage, access and how much concrete has to come out change the total. Your written estimate is the price.

How a Repair Job Runs

1. Inspect and find the cause

We look at the damage, the drainage and the base to see why the concrete failed.

2. Recommend a fix

You get a written estimate for repair, replacement or both, with the reasons for each.

3. Fix the water first

Downspouts, grading and joints are dealt with so the problem does not come back.

4. Repair or rebuild

We level, seal, patch or replace, and cure the new work before you use it.

Why Choose Us for Concrete Repair & Replacement

Cause before cure

We find and fix the water or base problem, not just the crack you can see.

No push to replace

If sealing or leveling will last, that is what we recommend.

Concrete Repair & Replacement Questions

Is mudjacking or foam better?

Both raise sunken slabs. Mudjacking costs less per square foot. Foam uses smaller holes, weighs less and cures quickly, but HomeGuide lists it at roughly double the price. The right choice depends on the slab and the soil.

Can scaled concrete be resurfaced?

A thin overlay can cover light scaling on a sound slab. If the slab is cracked, sunken or scaling badly, an overlay will not hold and replacement is the better spend.

Why does my concrete keep cracking?

Repeating cracks usually point to water under the slab, a weak base or missing control joints. Sealing a crack without fixing the cause only buys time.

Will new concrete match the old?

New concrete is lighter at first and blends in over time. Where matching matters, replacing a whole panel or section looks better than a patch.

When should concrete be fixed?

Seal cracks and joints in late summer or fall before freeze-thaw season. Leveling and replacement are done when the ground is not frozen.

Get a Concrete Repair & Replacement Estimate

Send a photo of the damage or call [PHONE]. We will tell you whether it is a repair or a replacement.

Call (319) 481-5867 Free Estimate