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Construction and repair projects often face hidden challenges beneath the ground.

Shifting soils, underground voids, uneven foundations, and aging infrastructure can threaten safety, timelines, and budgets. FSI’s geotechnical polyurethane foams provide reliable solutions that address these challenges with speed, efficiency, and long-term performance. 

Engineered to be lightweight yet incredibly strong, our foams expand to fill voids, stabilize soil, and support structures. Unlike traditional methods that require excavation or heavy machinery, geotechnical foam provides a fast, clean, and permanent solution. Its versatility makes it ideal for both residential repairs and large-scale infrastructure projects. 

Whether supporting pipelines, filling voids, stabilizing soil, or leveling concrete, FSI geotechnical foams deliver speed, durability, and reliability to keep projects on schedule and safe. 

Trench Break™ – Strong Support for Critical Infrastructure 

Trench Break™ closed-cell rigid polyurethane foam is designed for demanding geotechnical applications where stability and speed are essential. Lightweight and durable, it expands to fill voids and reinforce soil quickly, helping projects stay on track with minimal disruption. 

Common applications include: 

  • Pipeline pads, pillows, and rapid supports
  • Void filling for sinkholes and mine shafts
  • Soil compaction and stabilization
  • Foundation lifting
  • Bridge and runway repair

Benefits of Trench Break™: 

  • Rapid installation saves time and labor 
  • Durable and reliable in challenging soil and environmental conditions 
  • Lightweight for easy handling in hard-to-reach locations 
  • Cost-effective alternative to traditional methods 

Trench Break™ is trusted across energy, transportation, municipal, and industrial projects for its consistent, long-lasting performance. 

workers spraying trench break geotechnical foam from FSI as part of installing pipeline
Closed-cell rigid polyurethane foam for Geotechnical end use

FoamJack® – Fast, Durable Concrete Leveling 

FoamJack® expanding rigid polyurethane foam is a fast, permanent solution for lifting, leveling, and stabilizing concrete without excavation or slab replacement. Its injection process fills voids beneath the concrete and gently lifts slabs to their original level, curing in minutes for a stable foundation. 

Ideal applications include: 

  • Foundations 
  • Roads and sidewalks 
  • Driveways, steps, patios, and pool decks 
  • Garages and other concrete surfaces 

Advantages over traditional mudjacking: 

  • Requires smaller, less noticeable injection holes 
  • Lightweight and easy to transport to difficult job sites 
  • Expands to fill voids and compress loose soil 
  • Displaces water to prevent future soil washout 
  • Cures quickly for minimal project disruption 

Proven performance since 1988: 

  • Works in sand, rock, and poor soil conditions 
  • All-season product available year-round 
  • Permanently levels concrete in as little as 15 minutes 
  • Non-hazardous, HFC-free, zero GWP, zero ODP, and no VOCs 
  • Made in the USA 

FoamJack® is trusted by contractors and project owners alike for clean, fast, and durable concrete repairs. 

FoamJack® expanding rigid polyurethane foam is a fast, permanent solution for lifting, leveling, and stabilizing concrete without excavation or slab replacement. Its injection process fills voids beneath the concrete and gently lifts slabs to their original level, curing in minutes for a stable foundation.
From stabilizing critical pipelines to lifting sunken concrete slabs, FSI’s geotechnical polyurethane foams deliver proven strength, long-term durability, and efficient installation. Whether your project involves large-scale infrastructure or residential repair, our solutions are engineered to keep it secure, stable, and built to last.

Why Choose FSI Geotechnical Foam 

With decades of polyurethane expertise, FSI develops products that deliver consistent, field-proven performance. Our geotechnical foams are designed to: 

  • Reduce labor, equipment, and excavation costs 
  • Perform reliably in challenging soil and environmental conditions 
  • Save time with fast installation and rapid curing 
  • Provide long-term structural support for residential, commercial, and industrial projects 
  • Offer sustainable, safe formulations 

Build Strong Foundations with FSI 

FSI geotechnical foams provide solutions that work beneath the surface to keep projects secure, efficient, and long-lasting. Whether stabilizing pipelines, filling voids, reinforcing soil, or leveling concrete, Trench Break™ and FoamJack® deliver the strength, reliability, and versatility your project demands. 

Contact FSI today to learn how our geotechnical foam solutions can support your next project.