Waterfront property owners in Cape Coral, FL know that seawalls are their first line of defense against erosion, flooding, and structural failure. But over time, voids, settling, and water pressure buildup can weaken your seawall — especially behind older concrete or vinyl walls.
That’s where Single Component Polyurethane Foam Injection comes in. At Seawall Savers™, we use this cutting-edge repair method to stabilize soils, fill voids, and relieve hydrostatic pressure — without removing your wall or excavating your yard.
Single component polyurethane foam is a water-activated, expansive resin that’s injected into the ground behind the seawall. Once it encounters moisture, it expands rapidly, sealing cracks, displacing water, and compacting loose soil.
The result? A strong, waterproof barrier that restores stability and extends the life of your seawall — often for a fraction of the cost of replacement.
Polyurethane foam injection is ideal for:
Unlike traditional repairs, foam injection is non-invasive, fast curing, and eco-safe. It stabilizes from the inside out — providing both structural support and moisture control.
We assess the condition of your seawall and identify voids, soil erosion, or areas with water intrusion.
Small holes are drilled behind the seawall to allow targeted foam injection.
The single component polyurethane resin is injected into the soil or void. It expands as it reacts with ground moisture, creating a dense, waterproof foam matrix.
The foam sets within minutes and is monitored for spread and effectiveness. We verify all voids are filled and water movement has stopped.
Once stabilized, we clean the area and provide a report with recommendations for future maintenance.
In Cape Coral, the combination of high-water tables, frequent storms, and soft subsoil can quickly erode fill behind seawalls. If you’ve noticed settling ground, cracks in your seawall, or sinkholes near the shoreline, foam injection might be your best next step.
At Seawall Savers™, we often recommend foam repair for:
Foam injection has been used across Florida and coastal regions to successfully stabilize seawalls for over a decade. In one Cape Coral project, Seawall Savers™ injected polyurethane beneath a 25-year-old seawall that had developed recurring sinkholes. Within 24 hours, the soil was stabilized, drainage restored, and no further settling was observed even after seasonal rains.
With proper installation, polyurethane foam injection can stabilize a seawall for 15–25 years or more. It doesn’t shrink or break down over time.
Yes — the process is minimally invasive and doesn’t require digging. There’s no risk to surrounding surfaces or structures.
Costs vary based on void size and wall length but are typically 30–50% less than partial wall reconstruction.
No. The foam solidifies in place and hardens quickly. Our certified team controls spread and depth during application. We take environmental protection seriously, we deploy floating turbidity curtains to contain any foam which may leak into water body.
✅ Local Cape Coral expertise with marine-grade materials
✅ Licensed and insured technicians with years of field experience
✅ Precision equipment for clean, accurate foam delivery
✅ Full inspection and documentation provided after repair
✅ One-day solutions for most homes and light commercial walls
Don’t wait until voids and pressure compromise your entire seawall. Contact Seawall Savers™ today to schedule your no-cost inspection and see if polyurethane foam injection is the right solution for your Cape Coral property.
Serving Cape Coral, Fort Myers, Pine Island & surrounding coastal areas.
Seawall Savers™ — Stabilizing Seawalls the Smart Way.
We look forward to the opportunity to serve your seawall repair needs. Contact our office directly over the phone or through the form below at any time to review your next project!