Strata AFS (Advanced Foam Solution)

Strata AFS™ is a rapidly curing hydrophobic polyurethane foam designed to be injected into rock fissures, gravel layers, joints, cracks and voids to fill voids and consolidate strata. It is ideal for controlling and diverting water, including high volumes of gushing water.
rock consolidation and void fill in mining
rock consolidation
Injecting AFS for rock consolidation and water control
  • Longwall extraction
  • Tip-to-face void fill
  • Rock consolidation above shields
  • Floor-to-roof stabilization
  • Water diversion and stoppage
  • Grouting around surface and drill pipes


Strata AFS rock consolidation void fill
Tip-to-face void fill
  • Single component injectable liquid that cures to a rigid, closed cell hydrophobic polyurethane foam
  • Free foam expansion up to 30 times
  • Controlled reaction time
  • Catalysts required for optimal reactivity with multiple options for accelerated reaction time
  • Resistant to most organic solvents, mild acids, alkali, petroleum and micro-organisms
  • Contains no volatile solvents
  • Phthalate free - no phthalate-based plasticizers
  • Not classified as HAZMAT for transport


water control in mining
Strata AFS Fast and Extra Fast activate faster reaction times

Catalysts available for accelerated reaction time, particularly in projects involving the cut-off of gushing water.


rock consolidation and void fill
AFS packaging options
  • Strata AFS: 50 gallon metal drum and 250 gallon tote
  • Strata AFS Fast and Extra Fast: 5 gallon metal pail
  • Sealed under dry nitrogen
  • Sensitive to moisture
  • Store in original containers in a dry area
  • Storage temperature -  40°F - 90°F
  • Once opened, useful life is greatly reduced and should be used as quickly as possible.
  • Shelf life: 2 years (unopened)
AFS injection for rock consolidation and water control
Strata Crews injecting Strata AFS

Strata provides teams of experienced personnel and labor crews to safely complete projects anywhere in the country. Time and materials service includes the injection resin, pumping equipment, mining professionals and skilled labor to complete the job quickly and accurately.

MSDS Sheets

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Strata AFS™

Strata AFS Fast™

Strata AFS Extra Fast™