Professional foundation waterproofing serving Des Moines and surrounding areas.
The foundation is where the house meets the water table, and in Des Moines that meeting is contested: expansive clay that holds meltwater against walls for weeks, river-bottom blocks with shallow groundwater, and a century of foundations that have all developed their own opinions about seams. Foundation waterproofing in Des Moines, Iowa works the problem from the outside in — grading and drainage first, then the wall defenses, then the interior systems that manage whatever still gets through.
| Layer | What it does | Typical range |
|---|---|---|
| Grading + downspouts | Surface water routed away from walls | $500 – $2,500 |
| Crack injection | Polyurethane/epoxy seals, lifetime-rated | $400 – $1,200 |
| Exterior membrane | Excavation, membrane, drainage board | $8,000 – $20,000+ |
| Interior drainage | Perimeter tile to sump, manages intrusion | $2,500 – $7,500 |
| Wall stabilization | Anchors/reinforcement for moving walls | $4,000 – $12,000 |
| Window well drains | Wells tied into the drainage plan | $300 – $900 each |
Grade is the cheapest waterproofing there is. Before any membrane or injection, the diagnostic walks the outside: soil that slopes toward the foundation, downspouts dumping at the wall, flower beds bermed like moats. Six inches of grade correction and four-foot downspout extensions move hundreds of gallons per storm away from walls that have been drinking them for decades — often shrinking the interior problem enough that the system installed is smaller and cheaper. The homes with recurring water almost always start their fix with a shovel, not a sump.
Des Moines’ foundation work follows its ground: the clay plateau where expansive soils cycle every wall, the river bottoms where the water table sits close and interior drainage is a given, century stone and early-pour foundations in the older neighborhoods, and mid-century block walls that fail at their mortar seams. Wall movement gets evaluated before anything gets sealed — because waterproofing a moving wall is renting peace, not buying it.
Serving Des Moines, Polk County, and the metro — diagnostics, injection, membranes, drainage, and stabilization coordination.
Wall weeping every spring? Call — diagnostic first, water handled at the wall, foundation stable for decades.
Fast, professional water damage restoration for homes and businesses — extraction, drying, and full repair.
Complete flood cleanup and restoration after rising water, storms, and overflow.
24/7 water extraction with truck-mounted pumps to remove standing water fast and limit damage.
Full structural repair and reconstruction after water damage — drywall, floors, and framing.
Detailed moisture inspection and assessment with thermal imaging to find hidden water damage.
Cut out, replace, and repaint water-damaged drywall so walls look new again.
It depends on which kind. Vertical shrinkage cracks — the thin, even ones most pours develop — are entry points for water but rarely structural, and injection sealing is routine. Horizontal cracks and stair-step cracks in block walls are the serious kind: they're load responses to soil pressure and hydrostatic force, and they need structural evaluation before any waterproofing. The diagnostic's first job is telling those apart, because sealing a moving wall is wasted money.
Expansive clay is a volume machine — it swells when wet and shrinks when dry, cycling every foundation through stress seasons. In wet springs the clay holds water against walls for weeks (hydrostatic pressure pushing water through every seam), then in dry summers it pulls away and lets the foundation settle unevenly. Both directions move walls and open cracks. The metro's river bottoms add a high water table on top of the clay; the waterproofing that works here is designed for pressure, not just seepage.
Crack injection $400 to $1,200 per crack; interior drainage systems $2,500 to $7,500; exterior excavation and membrane $8,000 to $20,000+ per wall; bowing-wall anchors and reinforcement $4,000 to $12,000 per wall; grading and downspout correction $500 to $2,500. Diagnostics free with any work; structural referrals coordinated when walls need more than waterproofing.
Water follows structure: a wall that's bowing or settling will reopen any seal across it, so movement gets addressed first — anchors, reinforcement, or underpinning as the evaluation directs. Once the wall is stable, the waterproofing layer goes on and stays on. The sequence matters, and the inspection determines it; that's why the same visit distinguishes the crack that needs a membrane from the crack that needs an engineer.
Our certified technicians respond fast, assess the damage, and give you a clear plan — with no obligation and no up-front cost.