Urethanes - Hydrophobic
Avanti offers a comprehensive selection of hydrophobic polyurethane grouts designed to tackle a wide range of soil stabilization and water control challenges, from sealing large cracks and high-water flow areas to penetrating fine cracks and stabilizing loose granular soils. These 'water-fearing' grouts are engineered to react with minimal water and typically require a catalyst for optimal performance.
Our hydrophobic polyurethane resins have varying viscosities to handle different project conditions, and cure to form resilient, impermeable, and flexible seals. Whether filling voids, managing high-water flow, or stabilizing soils in below-grade structures, Avanti’s grouts provide reliable, long-lasting solutions that withstand wet/dry cycles and ensure effective water control and soil stabilization.
AV-248 Flexseal
AV-248 Flexseal™ is a moisture activated MDI-based polyurethane resin. The water/moisture activation is a two-step chemical reaction and is catalyzed by mixing AV-249 Flexseal AC™ with AV-248.
AV-248-LV Flexseal LV
AV-248-LV Flexseal LV is a low viscosity, moisture activated, MDI-based polyurethane resin whose reaction is catalyzed by mixing AV-249-LV Flexseal Cat LV with AV-248-LV. AV-248-LV is certified for use in potable water.
AV-258-LV PermaFlex LV
AV-258-LV PermaFlex LV™ is a moisture activated polyurethane resin whose chemical reaction is catalyzed by mixing AV-259-LV PermaFlex AC LV™ with AV-258-LV.
AV-258-MV PermaFlex
AV-258-MV PermaFlex™ is a moisture activated polyurethane resin whose chemical reaction is catalyzed by mixing AV-259-MV PermaFlex AC™ with AV-258-MV.
AV-260 Fusion Grout
AV-260 Fusion Grout™ is designed for sealing active and potential water leaks in various cracks, and annular spaces where flexibility is needed but is susceptible to wet/dry cycles.
AV-275 Soilgrout
AV-275 Soilgrout is a low viscosity, moisture activated, MDI-based polyurethane resin whose chemical reaction is catalyzed by mixing AV-276 Soilcat with AV-275. AV-275 is certified for use in potable water.
AV-278 Low Vis Hydro
AV-278 Low Vis Hydro™ is a very low viscosity, moisture-activated MDI-based polyurethane resin. The water/moisture activation is a two-step chemical reaction and is catalyzed by mixing AV-279 Low Vis Accel™ with AV-278.
AV-290 Fast-Set
AV-290 Fast-Set™ is a mid-range viscosity, dual component, hydrophobic MDI-based polyurethane resin designed to rapidly fill large voids on the exterior of below grade structures where high waterflow is present.








