Foundation Repair & Basement Waterproofing in Marshall County, Iowa

Name: JLB Basement Waterproofing & Foundation Repair
Address: 97 Indiana Ave Suite #1, Des Moines, IA, 50314, US
Telephone: (515) 717-8560
Price range: $$

Set in the Iowa River valley and anchored by Marshalltown's valve and HVAC manufacturing base, Marshall County homes and shops trust us for foundation repair and basement waterproofing built to stand up to central Iowa's wet-dry clay seasons.

4.9(100+ reviews)

11+ Years in Business

Locally Owned & Operated

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Des Moines
(515) 717-8560

Free 45-Minute Analysis + Written Report

Get a precise analysis of your foundation and waterproofing situation, and a clear estimate on what any fixes or corrections might cost.

4.9★ (100+ reviews) · 11+ Years · Transferable Warranty

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Google

4.9(100+ reviews)

Angi

Top Rated

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State Licensed

KS, MO & IA

Licensed & Insured

Serving Marshall County

Foundation Repair & Basement Waterproofing Across Marshall County, Iowa

From the county seat of Marshalltown out to the smaller communities of Le Grand, Gilman, Laurel, Haverhill, and Clemons, Marshall County's mix of river-valley ground and aging farm-town housing puts real stress on a structure over time. We bring foundation repair and basement waterproofing to every one of those towns, treating a settling century home in Marshalltown the same way we treat a leaking block basement in Le Grand or a heaving driveway in Gilman, Laurel, Haverhill, or Clemons. One local crew, one straight estimate, no matter where in the county you are.

Towns we serve in Marshall County: Le Grand, Gilman, Laurel, Haverhill, and Clemons.

Foundation & Waterproofing

Foundation Repair, Basement Waterproofing & Crawlspace Services in Marshall County, Iowa

One local crew handles the whole structural side in Marshall County — piering, waterproofing, crawlspace encapsulation, drainage, and wall replacement. Here's how we fix each:

Steel push pier foundation stabilization in Marshall County, Iowa

Foundation Repair in Marshall County

Foundation repair across Marshall County means dealing with seasonal clay that swells in wet springs and shrinks through dry summers, working century-old foundations near Marshalltown's older neighborhoods and newer poured walls in places like Le Grand alike. We diagnose the actual cause of stair-step cracks, sticking doors, and sloping floors, then stabilize with steel push or helical piers driven to load-bearing strata so the movement stops for good.

Steel push piers and helical piers driven to stable load-bearing soil
Wall anchors and carbon-fiber straps for bowing or cracked walls
Engineered, permanent fixes — not surface patches
Transferable warranty and a free, no-pressure inspection

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Basement Waterproofing in Marshall County

Basement waterproofing here has to answer the Iowa River valley and the slow-draining Iowan Surface clay that traps water against your walls. We install interior drain tile, reliable sump systems with battery backup, vapor barriers, and exterior sealing to intercept water before it reaches the slab, keeping Marshalltown and Gilman basements dry through snowmelt and the heaviest spring storms.

Interior drain tile and sump systems sized for Iowa’s water table
Crack injection and wall-to-floor joint sealing
Vapor barriers and dehumidification to stop musty air and mold
Keeps the lower level permanently dry, backed in writing

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Crawlspace encapsulation with vapor-barrier liner in Marshall County, Iowa

Crawlspace Encapsulation in Marshall County

Crawlspace encapsulation protects the many smaller and older homes in towns like Laurel, Haverhill, and Clemons, where vented crawls pull in humidity from damp county soil and breed mold, rot, and musty air upstairs. We seal the space with heavy liner, spray foam, and dehumidification — and JLB foams both the crawlspace and the basement for twice the protection at a lower cost than crews that treat only one.

Spray-foams BOTH the crawlspace AND the basement — twice the protection
Sealed vapor-barrier liner over floor and walls
Cuts humidity, mold, and energy loss from the stack effect
Done for less than competitors who seal only one or the other

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French drain trench with gravel and drain pipe in Marshall County, Iowa

French Drains & Drainage in Marshall County

French drains and exterior drainage matter on Marshall County's flat farm ground and gentle river-valley grades, where water pools against foundations instead of running off. We design buried gravel drains, regrade problem yards, extend downspouts, and route runoff well away from the house so the clay around your footings stops staying saturated season after season.

French drains, regrading, and buried downspout extensions
Redirects surface and groundwater away from the foundation
Relieves the hydrostatic pressure that cracks walls and floors
Built for Iowa freeze-thaw and heavy spring snowmelt

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Foundation Wall Replacement in Marshall County

Foundation wall replacement is the right call when a Marshalltown-area block or limestone wall has bowed, cracked through, or crumbled past what anchors and braces can hold. We shore the structure, remove the failed section, and rebuild with engineered poured or block walls and proper waterproofing, restoring full load capacity instead of patching a wall that will keep failing.