Interior Perimeter Drainage That Captures Water at the Footing

Epp Foundation Repair prices interior perimeter drainage at $50 to $120 per linear foot of perimeter, including sump pit and pump. A full-perimeter system on a typical 80- to 120-foot basement runs $6,000 to $10,000. Partial systems. Addressing one or two walls only. Start around $3,000. Pricing varies with slab thickness (homes built before 1960 often have 6-inch slabs that cost more to cut), basement access, finished-wall demo and restoration, and discharge routing complexity. Written estimate after on-site inspection reflects your scope.

Epp Foundation Repair backs the interior drainage system with a lifetime transferable warranty against system failure. The strongest warranty Epp offers. The warranty covers the perforated pipe, gravel bed, sump pit, and slab patch for the structural life of the basement and transfers to subsequent owners at no charge. The sump pump itself carries a 5-year manufacturer warranty; pumps typically last 7 to 12 years in eastern Nebraska groundwater conditions, so plan on one to two pump replacements over the warranty life of the system.

Water keeps arriving at the cove joint every rain and snowmelt. The cove joint widens as freeze-thaw cycles push water deeper into the seam. Eastern Nebraska sees 50-plus freeze events each winter. The sill plate stays damp and rots over 5 to 10 years; steel beam ends rust where they bear on the foundation wall. Mold colonizes finished basement walls and carpet within 48 to 72 hours of each wet event. Epp Foundation Repair has gutted finished basements for homeowners who waited 10 years on a wet-basement problem that a $7,500 interior drainage system would have ended. The fix gets more expensive, not less, the longer it sits.

Interior drainage costs 40 to 60 percent of exterior waterproofing in NE/IA conditions and works equally well in most basements. Exterior waterproofing requires excavating 8 feet down to the footing around the entire perimeter. Which destroys landscaping, threatens close neighbors' yards on small lots, and risks brick or stone veneer pulling away from the wall above grade. Interior drainage stays inside the basement, completes in 2 to 3 days, and routes water out without touching the exterior. Epp Foundation Repair reserves exterior waterproofing for cases where the wall itself is failing structurally and needs membrane protection on the outside face. About 1 in 10 jobs.

Epp Foundation Repair installs buried downspout extensions and diagnoses grading problems, but does not perform yard regrading itself (that's a landscape contractor scope. See the grading and yard sloping page). Dave Epp will walk the perimeter, identify whether downspouts and grading are also contributing, and sequence the fixes so the interior system does only the work it needs to do. About half of interior drainage jobs include a downspout extension as part of the same visit.

Epp Foundation Repair removes drywall, baseboards, and flooring in a 12- to 18-inch strip along the wall before trenching. Re-installation is not in Epp's scope. That work belongs to a finish carpenter, drywall contractor, or flooring installer. Epp will coordinate with a restoration contractor the homeowner picks, or hand off photos and dimensions so the homeowner's contractor knows exactly what was removed. Most homeowners restore finishes 30 to 60 days after the interior system installs so the slab patch cures fully first.

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.