Crawl Space Moisture Control That Treats Every Source, Not Just One
Epp Foundation Repair has diagnosed and corrected crawl space moisture across Nebraska, Iowa, Kansas, and Missouri since 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.
Controlling Moisture: how it works and when it's the right call.
Epp Foundation Repair starts with a moisture-load assessment: where is liquid water entering, how much soil is exposed, are vents sealed, what is the summer relative humidity reading, and is HVAC ducting condensing on its exterior. Each finding gets a matched solution. Interior perimeter drainage with a sump pit handles groundwater pushing through the footing. A reinforced vapor barrier sealed to the walls and piers stops the dirt floor from releasing water through evaporation. Vent sealing closes off summer humid-air infiltration. A commercial-grade dehumidifier sized to the cubic footage holds the humidity down year-round. The four parts work as a system, and removing any one weakens the others. Epp Foundation Repair installs them in sequence.
Crawl Space Repair & Moisture Control | Ryan Sturman
Our team walks through this on camera.
How we install controlling moisture.
Step 01.Full Crawl Space Moisture Assessment
Epp Foundation Repair maps every moisture source on the first visit: groundwater entry points, soil exposure square footage, vent count, plumbing penetrations, HVAC duct condensation, and a baseline relative humidity reading. The assessment determines which components are needed.
Step 02.Install Interior Drainage and Sump (if groundwater is present)
When standing water or active seepage shows up, drainage goes in first. Epp Foundation Repair excavates a perimeter trench in the dirt floor, lays gravel and perforated pipe sloped to a sump pit, and installs a primary pump with check valve. This step is skipped on crawls that are dry but humid. Those go straight to barrier and dehumidifier.
Step 03.Install a Reinforced Vapor Barrier
Epp Foundation Repair runs reinforced polyethylene barrier across the entire dirt floor, up the foundation walls, and seals seams with butyl tape. Piers, columns, and plumbing penetrations get cut and taped individually. A loose or unsealed barrier loses most of its value.
"After thirty-plus years under Nebraska and Iowa houses, I can tell you the single biggest reason crawl space jobs fail is that one contractor sold a barrier, another sold a dehumidifier, and nobody sealed the vents. You have to treat every moisture source on the same visit or the homeowner ends up paying twice."
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 by the Better Business Bureau for integrity and ethical business practices.
Many of our repairs carry a written Epp warranty. The warranty page lists every covered repair and its terms.
Answers to common questions about Controlling Moisture.
Don't see your question here? Our team is happy to help. Reach out anytime.
Crawl Space Repair warning signs this solution resolves.
Each problem sign below is a symptom this solution is engineered to fix. See how we diagnose it before we recommend this method.
Moisture in Crawl Space
Epp Foundation Repair has been encapsulating crawl spaces across Nebraska, Iowa, Kansas, and Missouri since 1994, dropping relative humidity to a stable, lower level.
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High Indoor Humidity
Epp Foundation Repair, family owned since 1994, diagnoses high-humidity calls across Nebraska, Iowa, Kansas, and Missouri by tracing the cause to the crawl space first. Epp holds a BBB A+ rating and the BBB Integrity Award.
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Mold and Mildew From Crawl Space Humidity
Epp Foundation Repair has sealed and conditioned the humid, vented crawl spaces behind mildew across Nebraska, Iowa, Kansas, and Missouri since 1994. BBB A+. BBB Integrity Award.
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Crawl Space Mold Causes
Epp Foundation Repair has diagnosed crawl space moisture across Nebraska, Iowa, Kansas, and Missouri since 1994. Mold spores exist in every crawl space and only colonize when humidity stays high, so the question is never the spores. It is where the water is coming from.
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Deteriorating Insulation
Fiberglass batts drooping between your floor joists or falling to the crawl space dirt. The insulation itself is the symptom. The cause is humid air and ground moisture that the insulation can no longer hold back.
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Groundwater Seepage
Epp Foundation Repair has been installing interior crawl space drainage and sump systems across Nebraska, Iowa, Kansas, and Missouri since 1994.
Learn moreServing 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.
Trained crews complete the work on schedule.
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.
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.
- 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
Expert guidance on protecting your home.
Practical articles from the Epp team on foundation health, waterproofing, and home preservation.
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Five regional offices across the Midwest.
St. Joseph, MO 64506