Cherry Hill & South Jersey
Foundation Crack Repair
Polyurethane and epoxy injection repairs that seal cracks permanently from the inside — no excavation required for most jobs.
Cherry Hill & South Jersey
Polyurethane and epoxy injection repairs that seal cracks permanently from the inside — no excavation required for most jobs.
Every foundation crack is a potential water entry point, and in South Jersey's high-water-table soil, water finds them quickly. Some cracks are cosmetic shrinkage from the original concrete cure and pose no real risk. Others are actively leaking or growing, and those need to be sealed before they widen, let more water in, or contribute to a mold problem in the space above them. We diagnose which kind of crack you have and seal it with the method that actually holds — not the cheapest option that looks fixed for a season.
South Jersey's high water table pushes against foundation walls from the outside. Over time that constant pressure finds the weakest point in the concrete or block and forces a crack open, especially after heavy rain.
Poured concrete continues to shrink slightly as it fully cures, sometimes for a year or more after a home is built. This produces thin, usually vertical hairline cracks that are typically cosmetic, not structural.
Water that enters an existing hairline crack and then freezes expands and widens it. Each winter freeze-thaw cycle can turn a minor cosmetic crack into an active leak point.
Uneven settling — common where clay-heavy soil expands and contracts with moisture — can produce diagonal or stair-step cracks in block walls. These need a closer look before deciding on a repair method.
A flexible, expanding foam that fills the entire crack — including hairline branches you can't see — and cures into a permanent, waterproof seal. This is the right choice for most active leaks, since it stays flexible as the concrete naturally moves with temperature and moisture changes.
A rigid adhesive that structurally bonds the two sides of a crack back together, restoring some of the wall's original strength. This is the better choice for non-moving structural cracks where the goal is reinforcement, not just sealing out water.
We inspect the crack in person before recommending either method — the wrong choice on a structural crack can look fine for a while and fail later. If we find a crack pattern that suggests a real structural issue (stair-stepping, horizontal cracking, or a bowing wall), we'll tell you honestly and point you to a structural engineer before any injection work, rather than sealing over a bigger problem.
Cost depends on the number of cracks, their length, and whether polyurethane or epoxy injection is the right method. Below are general ranges — a free inspection gives you an exact number.
| Service | Typical Range | Notes |
|---|---|---|
| Polyurethane injection (per crack) | $500 – $1,200 | Most common for active leaks |
| Epoxy injection (per crack) | $600 – $1,500 | Structural bonding cracks |
| Multiple cracks (2–4, same visit) | $1,200 – $3,500 | Per-crack discount typical |
| Full basement waterproofing system | $4,000 – $9,000 | See dedicated service page |
We are not a general contractor who also does waterproofing. It is all we do — so every crack diagnosis and every injection reflects deep, specific experience.
The owner inspects every crack before recommending a repair method. You get an honest read on whether it's cosmetic or something more, not a sales pitch.
Camden County's clay-heavy soil and high water table behave differently than sandy coastal soils. We select the injection method based on what actually holds up here.
Every crack repair comes with a written warranty. We review terms before you sign and stand behind the work after we leave.
Tom examines the crack in person — its pattern, width, and whether it's actively leaking — and documents what he finds. No charge, no obligation.
You'll hear plainly whether the crack is cosmetic, needs sealing, or shows signs of a structural issue that warrants an engineer's opinion first.
Most crack injection jobs are completed in a few hours, from the inside, with no excavation and minimal disruption to your basement.
We check in after the first heavy rain season to confirm the seal is holding. Questions after the repair are always answered directly.
Schedule a free, no-obligation inspection today. We will tell you exactly what kind of crack you have and what it will take to seal it — in plain language, without pressure.