Epp Foundation Repair installing crawl space support posts and wooden beams on stone piers.

Framing Repair · Since 1994

Diagnose Before You Repair Any Structural Joist

Epp Foundation Repair has repaired joists in Nebraska, Iowa, Kansas, and Missouri homes since 1994. Running a moisture meter, awl probe, and laser-level survey on every call so the repair matches the actual failure, not the surface symptom.

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.

BBB Accredited

Fully Insured

"By Your Side" Guarantee

Diagnosis First

The Failure Patterns Behind Most Joist Repairs

Joist repair applies the same diagnostic-first approach to any structural joist, floor, ceiling, or accessible attic. A moisture meter, awl probe, and laser-level survey identify whether the joist itself failed or a support below it did, and the intervention, sistering, replacement, or added support, is matched to whichever failure the on-site inspection actually finds.

Sill-contact damage, or a joist compromised through more than 30 percent: CauseMoisture wicking up the foundation wall into the sill plate and the joist's absorbent end grain, which in the worst runs has carried the rot well past the bearing end.What it meansBearing capacity is lost even though the joist body still looks sound, and once damage runs past 30 percent of the length a sister has nothing sound to hold to.Repair pathSistering a treated splice piece to the sound wood that remains, or full replacement of the joist in the same bay where more than 30 percent is compromised.
Undersized joist for its span: CauseA 2x8 joist at 16 inch on-center spanning 14 feet, at the code edge in 1950s to 1970s construction.What it meansA performance issue from 50 years of creep deflection, not a failure.Repair pathSistering with a same-size or one-size-larger joist, or a permanent mid-span jack post.
Joist overloaded by an added fixture: CauseA kitchen island, gun safe, hot tub, or partition wall added without structural review.What it meansCapacity has been exceeded, and cracking or excess deflection can follow.Repair pathSistering across the affected span.
Sag traced to a settled post, sagging beam, or foundation movement: CauseThe support below the joist has failed, not the joist itself.What it meansRepairing the joist would put new material on a load path that is still failing.Repair pathA permanent jack post, helical pier, or beam reinforcement addresses the actual support.

In Depth

What the Full Guide Covers

Everything a Midwest homeowner should know about this repair, from the specialists who do it every day.

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CH 01

Joist failures in the Midwest follow three patterns

Epp Foundation Repair has repaired joists across Nebraska, Iowa, Kansas, and Missouri since 1994, and three failure patterns account for most joist calls in our service area. Pattern one, and the dominant one in NE and IA homes. Is sill-contact rot in chronically wet crawl spaces, accounting for a large share of joist repairs in our diagnostic logs. The end of the joist sits on the sill plate; moisture wicks up the foundation wall and into the absorbent end-grain; the joist body still looks fine but the bearing end has lost structural capacity. Pattern two is undersized joists, almost exclusive to 1950 to 1970s Nebraska and Iowa construction, where 2x8 joists at 16-inch on-center were used to span 14 feet. At the code edge then, below the deflection limit homeowners notice now after 50 years of creep. Pattern three is over-loaded joists where a homeowner added a kitchen island, a gun safe, a hot tub, or a partition wall above the joist bay without structural review.

CH 02

Repair is a diagnostic decision, not a default

Epp Foundation Repair never quotes a joist repair scope from a phone description. The on-site assessment runs four checks: visual inspection of the joist for cracking, checking, notching, or visible rot; awl probe at the sill contact end and any discolored area to confirm wood density (sound wood resists awl penetration; rotted wood compresses); moisture-meter reading on the joist body to distinguish active rot from healed historical damage; and a laser-level survey of the floor above the joist to map the sag pattern. The sag pattern matters: a localized dip in one bay means the joist failed; a broad dip spanning multiple bays toward a support post or beam means the support below failed and the joists are fine.

CH 03

Five interventions cover the joist-repair scope

Epp Foundation Repair runs five intervention types under joist repair, each matched to a specific failure mode and pricing tier. End-rot repair is the most common in NE/IA. Sistering is used for undersized or cracked joists with sound bearing ends.

CH 04

When the joist isn't the failed part

Many joist service calls in our diagnostic data turn out to involve a settled support post (often a wood post on a concrete pad sunk into wet Nebraska or Iowa clay), an undersized or sagging beam between supports, or perimeter foundation movement that dropped one bearing wall by 1/2 inch or more. In those cases the joist is fine. The repair is below the joist. Replacing or sistering a joist on top of a still-failing support puts new wood on the same failure path. Symptoms return within five to ten years.

CH 05

Honest scope. What Epp does and what we don't

Epp Foundation Repair does the joist structural work: assessment, end-rot repair, sister install, repair plate install, full replacement, jack post installation, helical pier under a settled support, and beam reinforcement. Epp does not do finish carpentry: subfloor leveling above the repair, hardwood refinishing, drywall patching where ceilings opened for access. Epp does not re-route HVAC ducts, plumbing, or electrical in the joist bay; those trades work in coordination. Epp does not treat carpenter ant or termite infestations; a licensed pest applicator handles that scope and Epp sequences structural repair after treatment is confirmed dormant. Epp does not refinish ceiling joists in finished basements where access required removing drywall; drywall restoration is a separate trade.

CH 06

Pricing across the joist-repair range

Customized Repair Estimate after on-site inspection reflects your scope.

CH 07

Why homeowners across the Midwest call Epp Foundation Repair

Epp Foundation Repair holds a BBB A+ rating and won the BBB Integrity Award in 2011 and again in 2016. The only foundation contractor in Nebraska to win the award twice. Founder Dave Epp has been diagnosing joist failures in Midwestern crawl spaces and basements since 1994. The crew operates from five offices: Lincoln NE, Omaha NE, Grand Island NE, Norfolk NE, and St. Joseph MO.

Which Solution Is Right?

Matching the Repair to the Failure

Method	Fits when	Not a fit when	Warranty
Sistering	Sound wood remains at the bearing end, or the joist is undersized or cracked from an added load.	More than 30 percent of the joist length is compromised, or the failure sits in the support below.	Ask about the warranty that applies to your project
Full Replacement	More than 30 percent of the joist length is compromised.	Sound wood remains to sister to instead.	Ask about the warranty that applies to your project
Permanent Jack Post	Creep deflection under an undersized or overloaded joist calls for mid-span support.	The joist itself is rotted or cracked; a jack post does not restore joist material.	5 years from installation, jacks stop further settlement of the repaired area, free repair, replacement, or adjustment if they do not
Helical Pier	The sag traces to a settled support post below the joist rather than the joist itself.	The support below is sound and the joist is the failed member.	Lifetime of the structure, piers stop further settlement of the piered area, eligible only when piered crack to crack, crack to corner, or corner to corner

Warranty terms above are the headline coverage and its governing condition. Full terms, exclusions, and owner responsibilities for every method are on Epp's warranty terms page.

Engineered Solutions

The framing repair solutions we install 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.

Joist Sistering and Reinforcement

Epp Foundation Repair has sistered undersized, cracked, and partially-rotted joists across Nebraska, Iowa, Kansas, and Missouri since 1994. GRK structural fasteners, full-bearing sister joists.

Joist Repair Plates

Epp Foundation Repair has installed steel repair plates on damaged floor joists since 1994. Fast reinforcement where sistering a full lumber joist isn't practical.

Beam Repair

Epp Foundation Repair has sistered, reinforced, and replaced failing beams since 1994. Under thousands of homes from Lincoln to Omaha to St. Joseph.

Carrier Beam Repair

Epp Foundation Repair has rebuilt undersized and rotted carrier beams in 1950s through 1970s homes since 1994. The main beam carrying your entire floor system.

Crawl Space Jacks

Epp Foundation Repair has installed code-listed steel adjustable jack posts under sagging floors since 1994. Permanent structural support, not temporary shoring.

Floor Leveling Services

Epp Foundation Repair has leveled sagging floors across Nebraska, Iowa, Kansas, and Missouri since 1994. Laser-surveyed, cause-matched, lifted incrementally.

Regional Context

Why floor framing in older Nebraska and Iowa homes fails predictably

Most 1950s to 1970s homes across our service region were built with 2x8 joists at 16-inch centers spanning 14 feet, which is at the edge of code even when new. Combined with chronic-wet crawl spaces that rot sill plates and joist ends, the framing under older homes here fails predictably. Repair starts with cause diagnosis: settled support, rotted bearing, or undersized member.

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

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.

Problem Signs

Framing Repair warning signs to check for

These are the framing repair problem signs Epp Foundation Repair diagnoses most often. Each one links to what causes it and how it is repaired.

Broken or Cracked Floor Joists: Stabilize Before They Fail

Epp Foundation Repair regularly finds broken or cracked floor joists during crawl space and basement inspections across the four-state territory.

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Rotted Deck Joists

Epp Foundation Repair inspects deck framing as part of framing repair across the Midwest and commonly finds rot on decks over 15 years old. The danger is not cosmetic.

Learn more

Rotted Floor Joists

Epp Foundation Repair finds rotted floor joists on crawl space inspections across the four-state territory, and the cause is almost never the joist itself.

Learn more

Sagging Floor Joists

Epp Foundation Repair has reinforced sagging floor joists in homes across Nebraska, Iowa, Kansas, and Missouri since 1994, and the cause is usually one of a handful of mechanisms.

Learn more

Spotting one of these in your home?

Our specialists evaluate the underlying cause before recommending any work. Inspections are at no cost and there's no obligation to proceed.

"In Nebraska and Iowa homes from the 1950s through the 1970s, the joists are almost always 2x8 at 16-inch on-center spanning 14 feet. That was at the code edge when they were built. After 50 years they're still technically within code but they deflect enough that the homeowner feels the floor bounce. The fix is sistering with a 2x10 or installing a permanent jack post mid-span, but only after we've confirmed there isn't a rot or settlement problem masking as a deflection problem."

Dave Epp

Dave Epp founded Epp Foundation Repair in Lincoln, Nebraska in 1994 and has personally diagnosed joist failures in Midwestern crawl spaces and basements.

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.

Every repair comes with a written Epp warranty, from 1 year to the lifetime of the structure depending on the product.

Epp · Since 1994

Why hire Epp Foundation Repair.

MEET THE TEAM · 2 MIN

Recent Projects

Real homes, real foundations.

A small sample of work completed across our service area.

concrete repair

Concrete Repair in Lincoln, NE

Lincoln, NE

The brick residential home in Lincoln showed drainage challenges around its foundation entrance, where seasonal moisture from Nebraska's expansive clay soils required attention.

Completed September 2026

concrete leveling

Concrete Leveling in Lincoln, NE

Lincoln, NE

The basement at this Lincoln home showed signs of moisture infiltration and settlement concerns typical of Nebraska's expansive clay soils.

Completed September 2026

concrete leveling

Concrete Leveling in Lincoln, Nebraska

Lincoln, Nebraska

The residential driveway and sidewalk in Lincoln showed visible settlement cracks and joint deterioration caused by expansive clay soils shifting with seasonal moisture changes.

Completed September 2026

basement waterproofing

Basement Waterproofing in Lincoln, Nebraska

Lincoln, Nebraska

The basement at this Lincoln home showed signs of moisture intrusion common to properties built on expansive clay soils that shift seasonally.

Completed August 2026

concrete leveling

Concrete Leveling in Malcolm, NE

Malcolm, NE

The concrete sidewalk and driveway at this Malcolm home showed visible cracks and differential settlement between sections, typical of foundation movement in Nebraska's expansive…

Completed August 2026

concrete repair

Concrete Repair in Lincoln, Nebraska

Lincoln, Nebraska

The residential foundation in Lincoln faced drainage challenges common to this region, where expansive clay soils shift seasonally and stress foundations without adequate moisture…

Completed August 2026

See the work behind a healthy home.

Explore detailed case studies of recent foundation, waterproofing, and concrete projects across Nebraska, Iowa, Kansas, and Missouri.

View All Projects

Frequently Asked Questions

Answers to common questions about Joist Repair.

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

Repair keeps the existing joist in place and adds material (sister, repair plate, end splice) or adds support below (jack post) to restore load capacity. Replacement removes the existing joist and installs a new one in the same bay. Repair is appropriate when sound wood remains across at least 70% of joist length and bearing ends are intact. Replacement is appropriate when more than 30% of length is compromised or bearing ends are crushed. Epp confirms the exact cost with a free on-site inspection and Customized Repair Estimate.

Most 1950 to 1970s NE and IA construction used 2x8 joists at 16-inch on-center spanning 14 feet. That was at the code edge when built. After 50 years of creep deflection the floor bounces noticeably when walked. The joists aren't failed. They're undersized for current comfort expectations. Sistering with a 2x10 or installing a permanent mid-span jack post stiffens the floor. Both figures are planning ranges. The exact cost is set during your free on-site inspection. Contact Epp Foundation Repair for a free, on-site Customized Repair Estimate.

When the joist isn't the failed part. Many joist calls in our diagnostic data turn out to involve a settled support post, an undersized or sagging beam, or perimeter foundation movement. Not the joist itself. Fixing the joist on top of a still-failing support puts new wood on the same failure path. Don't repair joists in a wet crawl space without addressing the moisture source. The new wood follows the old failure within five to ten years.

Almost always, if the crawl space or basement is accessible from below. End-rot repair, sistering, repair plate install, and full replacement are all done in the joist bay without disturbing the subfloor above. The exception is full replacement where access from below is blocked by HVAC ducts or finished basement ceiling drywall; those access points are coordinated with the homeowner and the relevant trade before scheduling.

Four checks on every on-site assessment: visual inspection for cracking, checking, notching, or rot; awl probe at sill contact and discolored areas to confirm wood density; moisture-meter reading on the joist body to distinguish active rot from healed historical damage; and a laser-level survey of the floor above to map the sag pattern and determine whether the failure is in the joist or in the support below.

Yes. Carpenter ant or termite damage requires a licensed pest-control applicator to treat the infestation and confirm dormant before Epp executes structural repair. Repairing structural damage from pests without first eliminating the active colony puts new wood into the same infestation. Epp sequences the work and coordinates with the homeowner's pest contractor. Pest treatment first, structural repair after treatment is confirmed dormant.

Any figures shown above are general context only and are not project quotes. A precise figure is provided on the Customized Repair Estimate after on-site inspection.

Pricing & Scope

Honest Pricing and Honest Limits

Every home is different. What a repair costs depends on the cause, the scope, and access. A free on-site inspection produces a Customized Repair Estimate that reflects your home, not a typical range.

Estimate Only

Approximate pricing

Customized Repair Estimate after on-site inspection reflects your scope.

When this isn't the right fix

Don't repair the joist when the joist isn't the failed part. Many joist calls in our diagnostic data turn out to be settled support posts, undersized beams, or perimeter foundation movement rather than joist failure. Don't execute joist repair in a wet crawl space without addressing the moisture source. The new wood follows the old failure within five to ten years. Don't repair pest-damaged joists until a licensed pest-control applicator has treated and confirmed the infestation dormant.

Why our estimates are honest

Epp Foundation Repair holds a BBB A+ rating and won the BBB Integrity Award in both 2011 and 2016. The only foundation contractor in Nebraska to win the award twice.

More Framing Repair Services

The full range of our framing repair work.

Every framing repair method we install. Sequenced so the soil profile and failure mode determine the fix.

Epp Foundation Repair inspecting a crawl space with a cracked block foundation and old HVAC ducts in Beatrice, NE.

Sistering Floor Joists

Sistering bolts a new full-length joist alongside an existing undersized, cracked, or partially rotted joist to restore load capacity without removing the original. When the damage is localized and the joist is not failed through.

Learn more

Epp Foundation Repair inspecting rotten wood support beams in a crawl space in Lincoln, NE.

Floor Joist Repair

Floor joist repair covers the full intervention range. Sistering, end-rot repair, repair plates, full replacement. Chosen after a diagnosis that distinguishes wood damage from a settled support or undersized beam below.

Learn more

Epp Foundation Repair installing an adjustable smart jack for crawl space structural repair and beam support in Lincoln, NE.

Sagging Floor Repair

Sagging floor repair starts with a laser-level survey to identify the cause. Undersized joist, rotted joist, settled support post, sagging beam, or foundation movement. Then executes the structural lift, sister, jack, or pier work matched to the diagnosis.

Learn more

Epp Foundation Repair installing adjustable smart jacks on concrete piers to support crawl space wooden beams.

Post & Pier Replacement

Epp Foundation Repair replaces failed wood posts and undersized concrete piers in crawl spaces and basements across NE, IA, KS, and MO. Typically with helical pier and adjustable steel jack-post upgrades.

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Beam & Girder Replacement

Epp Foundation Repair replaces failed structural beams and girders in basements and crawl spaces across NE, IA, KS, and MO. Engineered LVL or steel I-beam, properly sized supports, load verified.

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Deck Joist Repair

Epp Foundation Repair sisters or replaces rotted exterior deck joists and corroded joist hangers across NE, IA, KS, and MO. Exterior-rated structural screws, ledger-condition assessment, and honest scope.

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Service Areas

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.

Top cities we serve

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The Process

How we approach Joist Repair

A straightforward path from initial inspection to completed repairs.

Step 01

Diagnose the failure mode on-site

Epp runs visual inspection, awl probe, moisture-meter reading, and laser-level survey of the floor above. The sag pattern distinguishes joist failure (localized dip in one bay) from support failure below (broad dip spanning multiple bays toward a single support).

Step 02

Match the intervention to the failure

End-rot repair for sill-contact rot (most common NE/IA). Sistering for undersized or cracked joists with sound bearing ends. Repair plate for minor cracking. Full replacement when more than 30% of joist length is compromised. Jack post for creep deflection. Helical pier or beam reinforcement when the failure is actually below the joist.

Step 03

Address moisture or pest activity if present

Rotted joist means moisture, and moisture will cause the next failure. Epp sequences vapor barrier, drainage, or encapsulation before or in parallel with structural repair. Pest damage means a licensed applicator treats the colony before structural repair begins.

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Customer Reviews

Over 1,700 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 Customized Repair 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.

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.

View all articles

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