The Chemical Company

Watson Bowman


The Wabo®Expandex system is a unique expansion joint for asphalt overlays and abutment joints. The system is a one piece monolithic asphaltic plug joint designed to eliminate the need for any anchoring device and provide a flexible yet smooth ridging joint.

Product Highlights


  • Flexible asphaltic plug joint system
  • Compatible with asphalt overlays
  • Provides a flexible, smooth riding translation between slabs
  • Accommodates +/- 3/4” movement at time of installation
  • Single pour application requiring minimum downtime


Armorless Joint Systems