Basement Waterproofing in Sioux Falls, SD

Why Sioux Falls Basements Leak

Sioux Falls sits on a mix of glacial till, clay, and silt — soils that hold water and expand and contract aggressively through our freeze/thaw cycles. Add in spring snowmelt running off the surrounding farmland, an aging stormwater system in many older neighborhoods, and decades-old foundations that were poured before modern waterproofing standards existed, and you get the basement leak problem we see every April.

Most wet basements in Sioux Falls leak through one of these paths:

• The cove joint (where the floor meets the foundation wall) — the most common leak point in poured concrete and block foundations.
• Foundation wall cracks caused by hydrostatic pressure or settlement — usually vertical or diagonal cracks running floor to ceiling.
• Window wells that have filled with debris and overflow during heavy rain.
• Failed or undersized sump pumps that can't keep up with peak runoff.
• Hairline mortar cracks in cinder-block walls — water tracks down through the cores and seeps along the joints.

The fix depends on the source. That's why we never quote a basement waterproofing job without inspecting it in person.

Our Basement Waterproofing Solutions

Interior Drain Tile (French Drain) Systems

For most Sioux Falls homes, an interior perimeter drain tile is the right answer. We open a narrow channel along the inside of the basement floor, install perforated pipe in clean gravel, route any wall and cove-joint water into the pipe, and discharge it to a sump pit. Once installed, the system handles every gallon of water that reaches your foundation — invisibly, permanently, and without disturbing your landscaping.

An interior system is typically 40-60% less expensive than digging up your yard, and the warranty is identical.

Exterior Excavation & Membrane

When the foundation wall itself is failing — major cracks, severe spalling on a block wall, or a wall that's bowing inward from outside pressure — we excavate down to the footing, repair or reinforce the wall, apply an elastomeric waterproof membrane, install a dimpled drainage board, and put a new exterior drain tile at the footing. This is the gold standard, and it's the only solution for severe exterior water issues.

Wall Vapor Barriers

For block foundations and homes with hydrostatic seepage, we install a heavy-duty dimpled vapor barrier on the inside of the wall that channels any moisture down into the drain tile system. Your basement stays visually clean, structurally sound, and dry to the touch.

Sump Pumps & Battery Backups

A waterproofing system is only as good as the pump that empties it. We install commercial-grade primary pumps, battery backup pumps, and Wi-Fi-monitored systems that text you when there's a problem — long before water shows up on your floor. Learn about our sump pump options →

The Process: From Free Inspection to Dry Basement

1. Schedule a free inspection. We come to your Sioux Falls home, usually within 2-3 business days. Inspections take about 30-45 minutes.
2. We diagnose the actual cause of the leak — not just the symptom. You'll get a clear explanation and photos.
3. You receive a written, fixed-price quote on the spot. No high-pressure tactics, no upsells, no "today only" pricing.
4. Installation typically takes 1-3 days for interior systems, 4-7 days for exterior. We protect your floors, contain the dust, and clean up daily.
5. Final walk-through and warranty paperwork. Your warranty is registered to your home, not to you, so it transfers at sale.

What Does Basement Waterproofing Cost in Sioux Falls?

Most projects run between $3,500 and $12,000. Pricing depends on:

• Linear footage of wall to be treated
• Interior vs. exterior solution
• Whether a sump pump or battery backup is included
• Wall material (poured concrete, block, or stone)
• Whether crack repair or structural work is needed alongside

We offer financing through trusted regional lenders for projects over $2,500.

Lifetime Transferable Warranty — In Plain English

Our interior waterproofing systems carry a lifetime transferable warranty. That means:

• If the system ever lets water through the treated wall area, we come back and fix it at no charge — for as long as you own the home.
• If you sell, the warranty transfers to the new owner. This is a real selling point at closing.
• The warranty is registered to your address, not your name — so we have you on file even if you lose the paperwork.

Frequently Asked Questions