Des Moines Basement Waterproofing & Foundation Repair

Most projects range from $3,500 to $15,000 depending on damage extent and method. Pier work runs $1,250 to $2,500 per pier, with most houses needing 6 to 12. JLB provides a detailed written estimate during your free assessment so you know exactly what you are paying for.

Stair-step cracks in basement walls, doors and windows that stick, and visible gaps between walls and ceilings are the most frequent indicators. In older neighborhoods like Beaverdale and Sherman Hill, mortar joint deterioration in stone walls is also common. Scheduling a professional evaluation early prevents problems from escalating.

During spring, snowmelt hits ground that stays frozen at depths up to 42 inches. That frozen layer forces runoff laterally against your house while the seasonal subsurface level rises to within 2-3 feet of basement slabs. A properly designed interior drainage system rated for peak seasonal loads is the most reliable fix.

Absolutely. Sherman Hill buildings from the 1870s-1910s and Drake bungalows from the 1920s-1940s have survived over a century on glacial till. JLB stabilizes these structures using methods matched to their original construction, including mortar repointing and steel reinforcement. Full replacement is rarely necessary.

The area sits on Dows Formation glacial till — a heterogeneous mix of clay, sand, gravel, and cobbles that is 45 to 60 feet thick across Polk County. This variability creates unpredictable resistance during pier installation, so every project requires site-specific engineering rather than a one-size approach.

Egress window cost depends on excavation, the window well, drainage tie-in, and whether the opening must be cut into a foundation wall. Because it involves both concrete and finishing work, a free on-site estimate is the accurate way to price it for your Des Moines basement.

Yes, in many cases. Building codes generally require an egress window in any basement bedroom or finished sleeping area to provide a safe exit and emergency access. If you're finishing a Des Moines basement to add a bedroom, an egress window is typically required—confirm specifics with local code before construction.

Egress windows are a life-safety feature: they give occupants a way out and firefighters a way in during an emergency. That's why code requires them for basement sleeping areas. Beyond safety, they add natural light and can increase a finished basement's value.

Installation involves excavating outside the foundation, cutting or enlarging the wall opening if needed, setting the window and a window well, and tying in drainage so the well doesn't collect water. Proper drainage is essential in Central Iowa to keep the new well from becoming a water-entry point.

Yes, though it requires cutting into the foundation wall and excavating outside, so it's best handled by a contractor experienced with foundations. The work must maintain structural integrity and include drainage. Adding one lets you legally and safely convert basement space into a bedroom in your Des Moines home.

Often, yes. Homes built before 1980 in neighborhoods like Beaverdale, Sherman Hill, and Drake frequently have shallow footings and stone or block foundations that are more vulnerable to Central Iowa's expansive clay and deep frost. Decades of freeze-thaw and soil movement make inspection and modern engineered repairs worthwhile.

These older Des Moines neighborhoods commonly see horizontal and stair-step cracking, bowing block or stone walls, cove-joint water intrusion, and settlement from the 42-inch frost depth working shallow footings. Their age and construction methods make them especially susceptible, so engineered piers, anchors, and interior drainage are frequently the right solutions.

Yes. Older stone and rubble foundations shift and lose mortar differently than poured concrete, so they need methods suited to their construction—wall anchors, bracing, interior drainage, and sometimes rebuilding sections. A contractor experienced with historic Des Moines homes can stabilize a stone foundation without compromising its character.

They can be. Pre-1980 Des Moines homes often have block or stone walls and shallower footings than modern builds, so repairs must account for those materials and depths. The engineering principles are the same—transfer load to stable soil and manage water—but the methods are tailored to older construction.

Yes. Block (CMU) walls that are cracking or bowing are commonly repaired with wall anchors, steel braces, or carbon-fiber straps to counter soil pressure, plus interior drainage to relieve water. Severely displaced walls may need replacement. An inspection measures the bowing to determine the right approach for your Des Moines home.

Older neighborhoods like Beaverdale, Sherman Hill, Drake, and Highland Park tend to have more foundation issues due to housing age (many homes built 1920s–1960s), older construction methods, and decades of soil settlement. However, newer developments in Ankeny, Waukee, and Grimes also experience problems — rapid construction during the 2000s housing boom sometimes outpaced proper soil compaction. Every neighborhood in the Des Moines metro sits on the same glacial till base, so no area is immune. The difference is usually housing age and construction quality.