Core Service
Water in a basement is not a cosmetic problem. It damages structure, promotes mold, ruins stored belongings, and depresses home value. We find where it's coming from and stop it — with solutions designed to last, backed by a transferable lifetime warranty.
Cornerstone's waterproofing work carries a transferable lifetime warranty — it stays with the home when you sell. Multiple customers have cited this as a real selling point with buyers and inspectors. The specifics are outlined in your estimate before any work begins.
What We Do
A perimeter drainage channel installed along the basement floor intercepts water that infiltrates through walls or floor and routes it to a sump pit before it can spread. This is the right solution when water volume is too high for simple crack sealing and exterior work isn't practical or necessary.
Free estimate →When the situation calls for it — active hydrostatic pressure, a wall that's failed, or chronic seepage that interior systems won't fully address — we excavate, apply membrane waterproofing to the outside of the foundation wall, and install exterior drainage. This is the most comprehensive approach for the right cases.
Free estimate →Properly sized sump pump installation with battery backup. We size the pump to your actual water volume, install it correctly, and configure battery backup so you're protected when you need it most — during heavy rain when the power goes out. We also service and replace failing sump systems.
Free estimate →Stable cracks in poured concrete walls that are allowing water infiltration can be sealed permanently from the interior using epoxy or polyurethane injection. This fills the crack from within, stops water, and — with epoxy — restores structural continuity to the wall itself.
Free estimate →Not all basement moisture is water intrusion — some is condensation from humid air meeting cool concrete. We identify whether your moisture is intrusion or condensation and recommend the right approach: addressing air exchange, installing a dehumidifier, or both. Getting this diagnosis right matters.
Free estimate →Window wells that fill with water during rain and allow it to enter through basement windows or the surrounding masonry. We install proper drainage at the base of the well or replace inadequate well covers to eliminate this as a water entry point.
Free estimate →Clark, Floyd, and surrounding counties share clay-heavy river valley soils that hold water and expand significantly when wet. This creates persistent hydrostatic pressure against basement walls — pressure that increases during heavy rain and spring thaw. The Ohio River floodplain raises the water table in low-lying areas, which means some homes are managing groundwater pressure year-round.
Older construction is especially vulnerable. Original waterproofing coatings applied during construction in the 1950s–1980s have typically degraded to the point of providing little protection. Many homes in Jeffersonville, New Albany, and the surrounding corridor were never built with adequate exterior drainage, meaning the soil adjacent to the foundation has been saturating for decades.
Indiana's seasonal rainfall creates repeated wet-dry cycles that keep the problem active. A basement that "only leaks in spring" is still experiencing repeated water events that are eroding mortar, corroding embedded metal, and feeding mold growth — just slowly enough that homeowners sometimes overlook how much cumulative damage is accumulating.
“Nick and his team are incredible. Professional communication, transparent prices, and quality craftsmanship. Nick was honest about what we needed and what we didn't. We haven't had issues with water since. The lifetime warranty is a bonus that's come up twice with real estate agents.”
Often Connected
Many wet basements start with surface water that isn't moving away from the home.
Cracks that let water in and structural movement often need to be addressed together.
Moisture below the first floor affects the whole home — not just the crawl space.
When water pressure is actively moving the wall, you need more than waterproofing.
Free inspection, honest diagnosis — we tell you exactly where it's coming from and what will actually fix it. No pressure, no inflated scope.
Common Questions
