STOP GAP! ® Minimal & Triple Expanding Insulating Foam

These products expand to take the shape of gaps and crevices forming an airtight and waterproof bond to most surfaces. STOP GAP!® dries tack free in 15 minutes and cures in 8 hours. It can be trimmed, sanded and painted. Exposure to sunlight will cause discoloration. Exterior usage requires painting.

glass, masonry, metal, most plastics, wood


  • Can be used as backer rod
  • Fills and insulates gaps and cracks
  • Fire retardant
  • Water resistant