Foundation & Basement Experts
Permanent Crack Injection That Stops Basement Leaks at the Source
We inject polyurethane and epoxy resins to permanently seal leaking and structural cracks in poured concrete basement walls. This low-disruption interior repair fills cracks through their full depth to stop water and restore wall integrity.
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Overview
Professional Basement Crack Injection You Can Trust
When water finds its way through a crack in a poured concrete basement wall, surface patches are almost always a disappointment. Hydraulic cement and sealants applied to the face of the wall address only the inside surface, leaving the rest of the crack open for water to travel through and eventually push the patch loose. Crack injection works differently by filling the crack completely from front to back, sealing the entire path water uses.
We perform injection with two primary resins chosen for the situation. Polyurethane is the go-to for active leaks: it reacts with moisture, foams to fill irregular voids, and stays flexible so it tolerates the minor movement concrete naturally experiences. Epoxy is a structural adhesive that cures hard and welds the crack back into a monolithic wall, restoring strength where the crack has compromised the concrete's integrity. Matching the resin to the goal is what makes the repair last.
The process is precise and clean. We set a series of injection ports along the crack, seal the surface to contain the material, then inject under pressure starting from the bottom so the resin travels up through the full thickness of the wall. Watching the resin emerge at each successive port confirms complete fill. Because the work is done entirely from inside, there is no excavation and no torn-up landscaping.
Done correctly, an injected crack should remain sealed and dry permanently, which is why we warranty our non-structural injections against re-leaking. We are also honest about limits: if a crack is the symptom of bowing walls or settlement, injection alone will not hold, and we will tell you what the wall actually needs. Free inspections and financing make it easy to get a leaking crack handled before the next storm.
Warning Signs
Signs You May Need Basement Crack Injection
- Water trickling or weeping from a wall crack
- Damp streaks running down from a crack
- Efflorescence trailing from the crack line
- A crack that darkens or wets after rain
- Puddling on the floor below a wall crack
- Visible cracks in a poured concrete wall
- Musty odor concentrated near the cracked area
Root Causes
What Causes the Problem
- Concrete shrinkage as the wall cured
- Hydrostatic pressure forcing water through the crack
- Minor settlement opening a vertical crack
- Freeze-thaw cycles widening existing cracks
- Tie-rod holes or form imperfections leaking
- Lateral soil pressure stressing the wall
- Vibration or load concentrating stress points
The Payoff
Benefits of Professional Basement Crack Injection
- Seals the crack through its full depth, not just the surface
- Flexible polyurethane stops active water leaks
- Epoxy restores structural strength to the wall
- Completely interior repair with no excavation
- Most cracks finished in a single visit
- Protects embedded steel from water and corrosion
- Warranted against re-leaking with financing options
How It Works
Our Basement Crack Injection Process
- 01
Crack Assessment
We inspect the crack to confirm it is suited for injection and determine whether water control or structural strength is the priority. This decides which resin we use.
- 02
Port Placement
We mount injection ports at intervals along the crack and seal the surface between them so resin stays contained under pressure.
- 03
Pressure Injection
Starting at the lowest port, we inject resin until it appears at the next port, working upward to fill the crack through the full wall thickness.
- 04
Resin Curing
We allow the polyurethane or epoxy to expand and cure, locking into the crack and forming a permanent watertight seal.
- 05
Finish and Inspect
We remove the ports, dress the surface flush, and confirm the repair is dry and complete before reviewing the warranty with you.
Answers You Can Trust
Basement Crack Injection FAQs
Surface patches with hydraulic cement only cover the inside face of the wall, leaving the rest of the crack open so water keeps traveling through and eventually pops the patch off. Injection fills the entire crack from front to back under pressure, sealing the actual path the water uses. That is why injection lasts where surface patches fail.
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