Fire Barrier FS 5800

This partnership combines Expand-O-Flash® by Johns Manville installed over FS5800-F by Thermal Structures, Inc.

Listed below are the key advantages to using FS5800-F enhanced Expand-O-Flash, making our roof expansion joints the clear choice in fire protection.

  • Expand-O-Flash
  • Included in Johns Manville Roofing Systems Guarantees
  • EPDM or Neoprene flexible membrane cover
  • Four Flangemetals – galvanized, aluminum, copper, stainless
  • Horizontal, vertical, shear movement
  • Joint openings up to 30 inches
  • Factory fabricated intersections
  • Seismic Joint Covers
  • FS5800-F
  • UL listed for 1 & 2 hourfire rating
  • No caulking required
  • 50% expansion/ contraction and lateral shear
  • Custom sizes
  • Meets UBC, BOCA, NFPA, ICBO & SBCC
  • ISO 9001 certified

Fire Barrier wall systems are also available, combining JM Expand-O-Gard® with Thermal Structures FS5800-W.





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