Asphalt impregnated fiber expansion joint

Data Sheets:

SpecFlex miscellaneous product photo

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Features & Benefits

  • Meets or exceeds AASHTO and ASTM specifications
  • Withstands freeze/thaw cycles
  • Approved by several state Departments of Transportation
  • Resists water infiltration
  • Resists breakage, cuts cleanly, and is easily held in position during concrete pouring
  • Recovers substantially to original thickness after release from compression
  • Cut, bundles & wrapped for easy handling & storage


SpecFlex is manufactured through a proprietary process that allows individual fibers to be saturated in the asphalt preservative before they are processed into final mat form.

As a result, SpecFlex gives superior asphalt distribution, product strength, flexibility and long term aging characteristics. It is a high quality, competitively priced alternative to conventionally produced fiber expansion joint materials.