Will you resurface my driveway?

No. Epp Foundation Repair is a foundation and concrete-leveling contractor, not a coatings contractor. Resurfacing. Applying a new wear surface over old concrete. Is a specialty trade with different materials, equipment, and warranties than what we offer. When that is the right answer we refer you to reputable coating contractors. We will not take work that is not ours to do well.

Pitting, Flaking, and Staining on Exterior Concrete at an Epp Foundation Repair project

Concrete Repair · Problem Signs · Since 1994

Pitting and Flaking Concrete Diagnosed Down to the Real Cause

Epp Foundation Repair has inspected salt-damaged and surface-failing concrete across Nebraska, Iowa, Kansas, and Missouri since 1994. Most pitting is cosmetic, but we tell you when it isn't.

Let's take the first step toward a healthy home.

A local specialist will inspect your foundation, walk you through the findings, and send a clear estimate. no cost, no pressure.

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What this symptom means

Pitting, Flaking, and Staining on Exterior Concrete: diagnosed and explained.

Epp Foundation Repair inspects surface deterioration on driveways, sidewalks, patios, garage aprons, and pool decks throughout a four-state territory where winter de-icing salt and 50 to 110 annual freeze-thaw cycles are the dominant accelerator of concrete surface failure. Dave Epp founded the company in 1994. After three decades of inspections the pattern holds: 80 percent of pitting and flaking calls we look at are cosmetic. The structural slab beneath is sound, but the 20 percent that reach the reinforcement steel below need a different conversation. We tell you which category yours falls into on the first visit, and we tell you when the right answer is a coating contractor, not us.

Pitting, Flaking, and Staining on Exterior Concrete diagnosed by Epp Foundation Repair

Catch It Early

When Surface Deterioration Becomes a Structural Concern

Early warning signs of pitting, flaking, and staining on exterior concrete on a Midwest home

Pits that expose rebar or wire mesh

If you can see metal at the bottom of a pit, the structural reinforcement is now corroding. Corroding rebar expands roughly 4x its original volume and will crack the slab from inside out. This is the one pitting pattern that demands action, not cosmetic patching.

Flaking that has reached 1/2 inch deep or more

Surface flaking that started cosmetic at 1/16 inch can progress to 1/2 inch or deeper if the underlying concrete was poor quality. At that depth, the slab is losing measurable thickness and load capacity.

Soft, crumbly concrete at slab edges

Concrete that can be scraped with a screwdriver or chipped off with a thumbnail is no longer concrete in any structural sense. This is end-stage sulfate attack or salt deterioration and the affected section needs to be removed and replaced, not patched.

Pitting concentrated where snowmelt runs

If pits and flakes follow the path your snowmelt takes off the garage apron or down the sidewalk, salt is the active cause. Changing your de-icing approach. Switching to calcium chloride or sand. Slows the damage. The damage already done does not reverse.

Most Common Causes

What causes pitting, flaking, and staining on exterior concrete in Midwest homes.

Salt damage from winter de-icing

Nebraska, Iowa, Kansas, and Missouri winters bring heavy use of rock salt on roads and homeowner ice melt on driveways and sidewalks. Chloride ions penetrate the top 1/4 inch of concrete, then water carrying those chlorides freezes and expands roughly 9 percent. Repeated cycles pop the cement paste off in flakes and create surface pits. Salt damage concentrates within 4 feet of garage doors, sidewalk edges where snowmelt drains, and apron joints.

Freeze-thaw spalling at the surface

Even without salt, the freeze-thaw cycling that hits the upper Midwest will eventually pop surface flakes off concrete that was not air-entrained at the original pour. Air-entrained concrete contains roughly 5 to 7 percent intentional air bubbles that give expanding water somewhere to go. Driveways poured before 1980 or by contractors who skipped the air-entraining admixture lose their surface in 15 to 30 years even without de-icing salt.

Poor original mix and finishing

Concrete finished while bleed water is still on the surface traps a weak cement-rich paste at the top. That weak layer fails first. Common signs of bad finishing include a polished, almost troweled-smooth look at age 2 to 5 years that then suddenly flakes off in sheets between years 5 and 10. Epp Foundation Repair can identify finishing failure by the flake pattern, but cannot fix it. The surface is what it is.

Sulfate attack from soil chemistry

Pockets of sulfate-rich soil exist in central Kansas, parts of western Iowa, and along old railroad corridors throughout the region. Sulfates in groundwater react with the calcium in cement paste and form expansive minerals that disintegrate the concrete from the bottom up. Sulfate attack shows as a soft, crumbly underside on slabs you can scrape with a screwdriver. Rare but unmistakable when present.

Biological staining: mildew, moss, and rust

Black streaks under downspouts, green moss in shaded patio sections, and orange rust stains from rebar showing through pits are all cosmetic and almost always cleanable. Epp Foundation Repair does not pressure-wash concrete. That is a separate specialty trade, but we can tell you in 30 seconds whether the discoloration is surface staining or a structural signal. Rust streaks from exposed rebar are the one biological-looking stain that is actually structural.

Underlying cause of pitting, flaking, and staining on exterior concrete in Midwest homes

Permanent Solutions

How concrete repair specialists actually fix pitting, flaking, and staining on exterior concrete.

Solving pitting, flaking, and staining on exterior concrete means addressing the underlying soil, pressure, or settlement cause. Not just patching the visible damage. Below are the engineered solutions we install most often for this symptom in Nebraska, Iowa, Kansas, and Missouri homes.

Concrete Repair solutions

Engineered concrete repair solutions for this problem.

Each method is matched to a specific failure mode and soil profile. Browse the toolkit we draw from when diagnosing your home.

Concrete Patching

Epp Foundation Repair has patched localized concrete damage. Salt-spalled stoops, broken handrail anchors, pitted garage entries. Across Nebraska, Iowa, Kansas, and Missouri since 1994, with the right material matched to the substrate every time.

Concrete Joint & Crack Sealing

Epp Foundation Repair has sealed concrete expansion joints and stable cracks with self-leveling polyurethane across Nebraska, Iowa, Kansas, and Missouri since 1994. Flexible material that handles 50+ freeze-thaw cycles a winter without splitting.

Regional Context

Why concrete fails differently in Nebraska, Iowa, Kansas, and Missouri

Loess soils consolidate under slabs after the first deep water exposure. Expansive clay heaves and contracts seasonally. Salt damage from 60+ freeze-thaw cycles per winter accelerates surface failure. Generic concrete repair ignores the soil under the slab, which is why settled concrete returns within a season or two. Regional repair starts with the cause underneath, not the crack on top.

36 to 42"

Frost penetration depth

Eastern Nebraska average

60 to 80

Freeze-thaw cycles / year

Lincoln to Omaha corridor

35 to 40"

Annual precipitation

NE / IA service region

30+

Years of regional inspections

30,000+ homes assessed

Loess soils and the crack patterns they produce

Most of eastern Nebraska and western Iowa sits on wind-deposited loess. a fine, silty soil 10 to 200+ feet deep. Loess holds its structure when dry but loses cohesion rapidly when saturated. After a wet spring, saturated loess expands against foundation walls. After a dry Nebraska summer, it contracts. pulling away from footings, creating voids beneath slabs, and producing the vertical and diagonal settlement cracks we see most frequently on the Lincoln, Omaha, Council Bluffs corridor.

The Marshall and Sharpsburg loess series. dominant across the eastern Nebraska service area. are particularly prone to this cyclical volume change. Homes built in the 1960s, 1980s on uncompacted loess backfill show the highest incidence of progressive settlement cracking in our inspection data.

Frost depth, freeze-thaw cycles, and horizontal cracking

Eastern Nebraska's 36, 42" frost penetration depth means the soil below grade freezes and thaws 60, 80 times per year. Each cycle applies lateral pressure to basement walls. A wall that holds through ten cycles can fail in the eleventh if drainage has worsened, backfill has settled, or the wall was already at capacity. Horizontal cracks near the soil grade line are almost always a freeze-thaw story in this region.

In eastern Kansas, expansive clay pockets near the surface introduce a different failure mode . consistent volume change regardless of frost depth. Horizontal cracking in Kansas foundations typically traces to clay expansion; the same pattern in Nebraska more often indicates frost-driven hydrostatic pressure.

"After 30 years of looking at pitted driveways across four states, I'll tell you the truth most contractors won't: 8 times out of 10, that pitting is cosmetic and the right answer is leave it alone or call a coatings company. We're not going to sell you a $4,000 repair on a $200 problem. Dave Epp, Founder"

Dave Epp

President, Epp Foundation Repair

Why Choose Epp

Care and expertise from a team that's been doing this since 1994.

Epp Foundation Repair is locally owned and operated, with crews dedicated exclusively to foundation, basement, and concrete work across the Midwest.

Specialized expertise.

Foundation repair, waterproofing, and concrete leveling are our entire focus. not a sideline.

Locally owned since 1994.

Three decades of experience with Midwest soils, basements, and weather conditions.

BBB Integrity Award winner.

Recognized in 2011 and 2016 for ethical business practices and customer transparency.

Warrantied solutions.

Most product solutions carry 10 to 25-year warranties backed by the original installer.

EPP · SINCE 1994

Why hire Epp Foundation Repair.

MEET THE TEAM · 2 MIN

Frequently Asked Questions

Answers to common questions about Pitting, Flaking, and Staining on Exterior Concrete.

Don't see your question here? Our team is happy to help. Reach out anytime.

Usually no, but sometimes yes. Surface pitting and flaking on an otherwise sound slab is cosmetic. The driveway works, the patio works, it just looks rough. Roughly 80 percent of the pitting calls Epp Foundation Repair inspects fall into that category. The 20 percent that are serious involve pits that have reached the rebar or wire mesh below, or flaking that has measurably reduced slab thickness. Exposed reinforcement steel corrodes and will crack the slab from inside out. A 20-minute on-site inspection tells you which category yours is.

If the damage is cosmetic only, Epp Foundation Repair will refer you to a concrete coating contractor. Typical resurfacing runs $3 to $8 per square foot in our region. We do not do that work. If the damage has reached the reinforcement steel or reduced slab thickness, structural patch repair through Epp runs $1,000 to $5,000 depending on how many areas are affected and how deep the damage goes. Written estimate after on-site inspection reflects your scope.

Switching from rock salt (sodium chloride) to calcium chloride or magnesium chloride slows the chloride penetration somewhat, and using sand for traction without any chemical does no surface damage at all. But damage already done does not reverse. If your driveway is salt-pitted, the surface that is gone is gone. Switching de-icer protects what remains and the surface of any new concrete you pour. Epp Foundation Repair's standing advice in the region: sand for traction, calcium chloride only when truly needed, never rock salt on residential concrete.

A penetrating concrete sealer applied every 3 to 5 years reduces chloride and water penetration significantly and is one of the cheapest things a homeowner in our four-state region can do. Penetrating silane or siloxane sealers run $30 to $80 per gallon, cover 100 to 200 square feet, and are roller-applied. Epp Foundation Repair does not sell or apply sealer. Your local hardware store does, but we recommend it for any sound concrete in salt country.

If concrete poured in the last 5 years is flaking more than concrete poured 30 years ago, the new pour likely missed the air-entraining admixture or was finished while bleed water was still on the surface. Both are contractor errors and unfortunately neither is reversible after the fact. Epp Foundation Repair can identify which error occurred but cannot fix the surface. That is replacement-only work.

Pricing ranges above are general estimates only and are not project quotes. A precise figure is provided on each written estimate after on-site inspection.

Other concrete repair warning signs to watch for.

If you see one, it's worth checking for the others. Most foundation problems show up as more than one symptom.

Concrete Cracks Diagnosed and Repaired

Epp Foundation Repair diagnoses exterior concrete cracks on driveways, sidewalks, patios, garage floors, and pool decks across a four-state territory covering more than 130,000 square miles. Dave Epp founded the company in 1994, and after 30-plus years reading slabs, the field rule holds: roughly 70 percent of widening exterior cracks trace back to subgrade movement, not the concrete itself. A hairline crack 1/16 inch wide that has not moved in two years is almost always shrinkage from the original cure. A 1/4-inch crack with one side dropped lower than the other is a settlement signal, and the slab is telling you the dirt under it is gone or going.

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Cracking Expansion Joints

Expansion joints are the soft filler strips set between concrete sections so the slabs can move without crushing into each other. Concrete expands in summer heat and contracts in winter cold, and across eastern Nebraska and western Iowa that swing happens through 50 to 70 freeze-thaw cycles every year. Each cycle works the joint a little harder. The filler dries out, shrinks, and eventually cracks or falls out. Once the joint opens, water runs straight down into the soil under the slab. That soil is often expansive clay or loess, which swells when wet and shrinks when dry, so the very water the joint was meant to keep out starts moving the slab from below. A cracked joint by itself is rarely a structural emergency. The reason to act is what follows: open joints feed water under the concrete, and water under concrete in this region is the leading cause of settlement, lifting, and slab separation. Sealing or replacing a joint early is a low-cost step. Waiting until the slab has settled or heaved turns it into a leveling or replacement job.

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Gaps Between Concrete Slabs and Walls

Gaps form between concrete slabs and walls when the soil under the slab settles and the slab drops with it, while the wall or the next slab stays in place. Across Nebraska, Iowa, Kansas, and Missouri the soil doing the settling is usually expansive clay or loess, which compacts and shrinks as it dries and washes out where drainage is poor. A patio pulling away from the house, a garage floor separating from the foundation wall, or concrete steps leaning back from the porch are all the same story: the slab has lost support underneath. The reason to take an early gap seriously is water. An open gap is a funnel. Every rain and snowmelt pours water straight into the soil beneath the slab and, where the gap is against the house, down along the foundation wall. That water accelerates the very settlement that opened the gap, and near the foundation it can find its way toward the basement or crawl space. The 50 to 70 freeze-thaw cycles this region sees each year widen the gap as trapped water freezes and expands. Sealing a thin gap is simple. A wide gap with a settled slab needs the slab lifted and the void filled before sealing makes sense.

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Pool Deck Settling and Tilting Around the Pool

Epp Foundation Repair diagnoses and lifts settled pool decks across a four-state territory where backfill compaction at pool installation rarely meets the 95 percent Proctor standard structural fill requires. Dave Epp founded the company in 1994. In three decades of pool-deck inspections, the pattern is consistent: roughly 85 percent of settling deck calls trace back to poorly compacted backfill around the pool walls. Fill that settles 1 to 4 inches in the first 5 years. The remaining 15 percent involve pool shell movement or expansive clay heave, and those require a different contractor or a different approach. We tell you which one yours is before any work is scoped.

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Sinking Driveways Diagnosed and Lifted Back to Grade

Epp Foundation Repair diagnoses and lifts sinking driveways across a four-state territory dominated by two soil behaviors that account for the majority of driveway settlement: hydroconsolidated loess fill in eastern Nebraska and western Iowa, and expansive clay in central Kansas and northern Missouri. Dave Epp founded the company in 1994. In three decades of driveway inspections, the field rule holds: 90 percent of sinking-driveway calls trace back to water reaching the subgrade through a fixable source. A downspout, a broken sprinkler, a low spot in the grade. We walk the water before we scope the lift, and we will not warranty a lift while the water source is still feeding the void.

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Sinking Garage Floors

Epp Foundation Repair inspects roughly 380 sinking garage slabs each year across the Lincoln, Omaha, Des Moines, and St. Joseph markets. A garage floor settles when the engineered fill placed beneath it during construction loses volume, and on 1960s through 1980s Nebraska and Iowa builds that fill was often sand, native loess, or pit-run gravel placed in lifts thicker than 12 inches without proper compaction testing. Dave Epp documents drops of 1 to 4 inches at the apron joint, with corner settlement concentrated where the slab meets the stem wall. The slab itself is usually intact, which is why foam lifting is viable on roughly 9 out of 10 garage floors Epp diagnoses.

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Service Areas

Serving Nebraska, Iowa, Kansas & Missouri.

Local crews based in six regional offices, dispatched daily across four states. If your town isn't listed, call us. we likely serve your area.

Top cities we serve

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Our Process

Take the first step toward a healthy home.

A straightforward path from initial inspection to completed repairs.

Step 01

Schedule your inspection.

A local specialist visits your home, evaluates the foundation, and answers your questions on site. No cost, no obligation.

Step 02

Receive an estimate based on your needs.

We provide a clear, written estimate with a scope of work tailored to your home's specific issues. Typically within one business day.

Step 03

Get your repairs.

Our certified crews complete the work on schedule and back it with product warranties of up to 25 years.

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Customer Reviews

Over 1,750 homeowners have shared their experience.

A 4.9-star average across Google, with verified reviews from homeowners throughout Nebraska, Iowa, Kansas, and Missouri.

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Free Estimate

Two ways to start: book instantly, or request an estimate.

Schedule your inspection in seconds with our Driive booking tool, or share a few details and a local specialist will follow up within one business day.

What to expect

A local foundation specialist on site
A complete walk-through of the findings
A written estimate within one business day
No cost, no obligation, no high-pressure sales

Prefer to call

402-423-9192

Nebraska · Iowa · Kansas · MissouriSince 1994

Let's take the first step toward a healthy home.

A local specialist will inspect your foundation, walk you through the findings, and send a clear estimate. no cost, no pressure.

Book instantly with Driive

BBB Accredited

Fully Insured

"By Your Side" Guarantee

From the Blog

Expert guidance on protecting your home.

Practical articles from the Epp team on foundation health, waterproofing, and home preservation.

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Why foundation problems are common in Des Moines homes.

Iowa's expansive clay soils and freeze-thaw cycles are particularly hard on residential foundations. A practical guide to what's happening below grade and why local…

Dave Epp·Feb 18, 2026