Marine Void Filling with Polyurethane Foam FAQ

What is marine void filling with polyurethane foam?

Marine void filling involves injecting high-strength polyurethane foam into empty spaces (voids) behind seawalls, bulkheads, or other waterfront structures. The foam expands and solidifies, stabilizing the soil, filling gaps, and helping to prevent further erosion and structural damage.

Why is void filling necessary for my seawall?

Over time, water movement can erode soil behind seawalls, creating dangerous voids that weaken structural integrity. Filling these voids with polyurethane foam restores support, prevents further soil loss, and extends the life of the seawall without the need for major reconstruction.

How does polyurethane foam work in marine environments?

Polyurethane foam is water-resistant and designed to withstand harsh marine conditions. It expands to fill irregular spaces, displaces water, and bonds with surrounding soils, creating a solid, durable mass that reinforces the area behind seawalls and prevents future erosion.

Is polyurethane foam environmentally safe?

Yes, the foams we use are designed to be environmentally safe once cured. They are inert, meaning they will not leach harmful chemicals into the surrounding soil or water, making them a safe option for marine and waterfront applications.

How long does the void filling process take?

Most projects can be completed in just one to two days, depending on the size and extent of the voids. Because the foam sets rapidly, there is minimal disruption to your property compared to traditional repair methods.

How long does polyurethane foam last?

Polyurethane foam is extremely durable and can last for decades. It resists erosion, water infiltration, and degradation, providing a long-term solution to voids and soil instability behind your seawall.

Is void filling more affordable than seawall replacement?

Yes! Marine void filling with polyurethane foam is a cost-effective alternative to full seawall replacement. It addresses the root causes of soil erosion without the high expense and lengthy timeline of tearing out and rebuilding structures.

How do I know if I need void filling?

Common signs you may need void filling include visible sinkholes behind your seawall, soil loss, cracks, uneven surfaces, or standing water. A professional assessment can determine the extent of the problem and whether polyurethane void filling is the right solution.