Seawall stabilization is the injection of polyurethane foam behind and beneath a seawall to fill voids created by soil washout, bind loose soil, and stop water from undermining the wall.
In depth
Seawalls fail when water works through joints and gaps and carries the backfill soil away, leaving voids that let the wall lean, settle, or crack. Polyurethane injection fills those voids and permeates the surrounding soil, where it expands and cures into a water-resistant mass that locks everything in place and seals the pathways water was using.
Because the foam is hydrophobic and performs in wet, shoreline conditions, it is well suited to seawall work, and it stabilizes without the heavy excavation a traditional rebuild would require.
How Acme applies it. Acme provides seawall repair throughout its lake and river communities, including the Chain O’ Lakes and Fox River corridor, using polyurethane to fill washout voids and stabilize soil behind the wall.
Related terms: Deep Foamjection, Soil Washout, Void Filling, Hydrophobic Foam
Frequently asked questions
Can polyurethane repair a leaning seawall?
Injection fills the voids behind the wall and stabilizes the soil, which stops further movement and can help re-anchor the wall. Severely failed walls may need structural work in addition to injection.
Why is foam good for seawalls?
The foam is hydrophobic and water-resistant, so it fills voids and seals the soil pathways water uses to erode backfill, without heavy digging along the shoreline.