Stop Blaming the Windows. The Foundation Moved First
Epp Foundation Repair has diagnosed window and door gaps across Nebraska, Iowa, Kansas, and Missouri since 1994. BBB A+. BBB Integrity Award 2011 and 2016.
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.
Gaps Around Windows and Doors: diagnosed and explained.
Epp Foundation Repair has inspected gap-around-window and gap-around-door symptoms in homes across the Lincoln, Omaha, Grand Island, Norfolk, St. Joseph, and northeast Kansas corridors since 1994. A visible gap between trim and frame. Usually an eighth of an inch or wider on one corner. Is almost never a window defect. The window is fine. The rough opening it sits inside has racked out of square because the foundation under that wall moved 1/2 inch to 2 inches relative to the rest of the house. Dave Epp has documented this exact pattern on three out of four service calls for this symptom: the gap is widest at the top corner directly above the lowest point of the foundation. Fix the foundation, the openings square back up.
Four Signals That Point to Foundation Movement, Not a Bad Window
- 01
The gap is widest at one corner of the window or door
Epp Foundation Repair treats a tapered gap, an eighth of an inch at one corner widening to a half inch diagonally opposite, As a near-certain indicator that the rough opening has racked. Uniform gaps on all four sides usually mean wood movement, not foundation movement.
- 02
Doors stick on one corner, swing free on the other
Epp Foundation Repair confirms racked openings with a 4-foot level on the door jamb. A jamb that is 1/4 inch or more out of plumb over its height is racked, and the foundation under that wall has moved.
- 03
Cracks above or below the window run diagonally toward a corner
Epp Foundation Repair installs a crack monitor on diagonal stair-step cracks tied to gapping windows. Movement of more than 1/32 inch over 30 to 90 days confirms active settlement and triggers an underpinning recommendation.
- 04
The gap appeared after a wet spring or a dry summer drought
Epp Foundation Repair logs the season of onset on every inspection. Wet-spring onset points to expansive clay heave in Kansas or Missouri. Dry-summer onset on loess soils in Nebraska or Iowa points to shrinkage settlement. The season tells Dave Epp which soil mechanism to address.
What causes gaps around windows and doors in Midwest homes.
- 01
Differential settlement on loess hilltops (NE, IA)
Epp Foundation Repair tracks differential settlement as the single most common cause of window and door gaps across the Loess Hills of western Iowa and eastern Nebraska. Loess is a wind-deposited silt that collapses up to 15 percent of its volume when it gets wet under load.
- 02
Expansive clay heave (KS, MO)
Epp Foundation Repair measures plasticity index values over 30 in the clay soils of northeast Kansas and northwest Missouri. High enough to swell 15 percent volumetrically when wet and shrink back when dry. Where loess drops a corner, expansive clay does the opposite: it lifts the center of a slab or footing 1 to 2 inches during a wet spring, squeezing the rough opening from below.
- 03
Sill plate rot under the window
Epp Foundation Repair sees rotted sill plates under windows in older Lincoln and Council Bluffs homes built before 1965. Water from a leaking storm window, failed flashing, or chronic exterior grading drives moisture into the sill, the sill loses 60 to 80 percent of its bearing capacity, and the wall above settles 1/2 to 1 inch into the rotted wood. The gap appears within 2 to 5 years of the leak starting.
- 04
Seasonal humidity (cosmetic only)
Epp Foundation Repair rules this out on every inspection before recommending any structural work. Wood trim and wood window frames expand a sixteenth to an eighth of an inch per linear foot between February and August across the Midwest. Contact Epp Foundation Repair for a free, on-site Customized Repair Estimate.
How foundation repair specialists actually fix gaps around windows and doors.
Solving gaps around windows and doors 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.
Engineered foundation 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.
Helical Piers
When a foundation has settled into soft or eroding soil, surface-level repairs treat the symptom. Helical piers transfer the structure's load to deep bearing soil, stopping settlement permanently, often restoring lost elevation.
Push Piers
Epp Foundation Repair has installed resistance push piers under settling Nebraska, Iowa, Kansas, and Missouri foundations since 1994. Driven to refusal under the structure's own weight, warrantied for life on the pier itself.
Foundation Underpinning
Epp Foundation Repair has driven engineered piers through Nebraska loess and Kansas clay since 1994. Helical, push, and slab piers, matched to the soil and the structure.
Carbon Fiber Reinforcement
Epp Foundation Repair has reinforced bowed walls across Nebraska, Iowa, Kansas, and Missouri since 1994. No interior steel, no excavation, no lost basement space.
Deep Foundation Systems
Epp Foundation Repair has stabilized settling structures across Nebraska, Iowa, Kansas, and Missouri since 1994 by carrying the load past weak surface soil to firm ground below. Stop the settlement, then attempt to recover what you can.
Epoxy Crack Injection
Epp Foundation Repair has injected foundation cracks across Nebraska, Iowa, Kansas, and Missouri since 1994, and uses sequential polyurethane plus epoxy when one alone won't hold.
Why foundation movement in Nebraska and Iowa needs a regional diagnosis
Loess soils across eastern Nebraska and western Iowa lose strength when wet. Expansive clay across northeast Kansas and northwest Missouri swells and shrinks with the seasons. Foundation movement here behaves differently than in states with stable bearing soil, which is why our diagnosis starts with the soil under the home, not just the crack on the wall.
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.
"If a window opens in winter and closes in summer, that's wood. If a window opens at one corner and the door across the room sticks at the opposite corner, that's the foundation, and no amount of caulk is going to fix it."
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.
Foundation repair, waterproofing, and concrete leveling are our entire focus, not a sideline.
Three decades of experience with Midwest soils, basements, and weather conditions.
Recognized in 2011 and 2016 for ethical business practices and customer transparency.
Every repair comes with a written Epp warranty, from 1 year to the lifetime of the structure depending on the product.
Answers to common questions about Gaps Around Windows and Doors.
Don't see your question here? Our team is happy to help. Reach out anytime.
Other foundation 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.
Serving Nebraska, Iowa, Kansas & Missouri.
Local crews based in five regional offices, dispatched daily across four states. If your town isn't listed, call us: we likely serve your area.
- Omaha, NE
- Lincoln, NE
- Topeka, KS
- Sioux City, IA
- Bellevue, NE
- St. Joseph, MO
- Council Bluffs, IA
- Grand Island, NE
- Papillion, NE
- Kearney, NE
Take the first step toward a healthy home.
A straightforward path from initial inspection to completed repairs.
Schedule your inspection.
A local specialist visits your home, evaluates the foundation, and answers your questions on site. No cost, no obligation.
Receive an estimate based on your needs.
We provide a clear, Customized Repair Estimate with a scope of work tailored to your home's specific issues. Typically within one business day.
Get your repairs.
Our own trained crews complete the work on schedule and back it with a written Epp warranty, set out in your contract.
Get the free settlement guide
Most foundation problems announce themselves early. This guide shows you what to look for before you call anyone.
- ✓A room-by-room checklist you can walk the house with
- ✓Which cracks can wait, and which deserve a closer look
- ✓How pier repair actually works, in plain language
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Five regional offices across the Midwest.
St. Joseph, MO 64506