Nesco Firestop-814 Intumescent Firestopping Sealant

November 10, 2025

NESCO introduces Firestop-814, a cULus-listed intumescent firestopping sealant engineered to restore fire-rated integrity for up to 4 hours when floors and walls are penetrated by mechanical, electrical, or plumbing systems. Firestop-814 meets ASTM-E814, ASTM-E1966, and other critical standards and is chemically compatible with PVC, CPVC, ABS, PEX, and most pipe types.

Key specifications:
  • Chemistry: Acrylic, water-based
  • Application temperature: 4°C to 49°C (40°F to 120°F)
  • Color: Red for easy inspection
  • Tooling time: ~30 minutes; full cure in 3-4 weeks
  • VOC content: ≤10g/L; LEED v4 tested
  • Shelf life: Approximately 2 years
  • Up to 4-hour fire-rating (ASTM-E814 compliant)
  • Paintable after cure
  • Available in 10.1 fl. oz. tubes

Firestop-814 is non-sag, freeze-thaw compatible, and suited for dynamic installations in commercial and multifamily construction. Contact your NESCO distributor for samples and pricing.​

Nesco Canada

Related Articles

Latest Articles

Changing Scene

  • Rexel Canada Welcomes Rexel USA Agreement to acquire Genuine Cable Group

    Rexel Canada Welcomes Rexel USA Agreement to acquire Genuine Cable Group

    October 19, 2026 “Rexel Canada welcomes Rexel USA agreement to acquire GCG (Genuine Cable Group)—a transformational step that will strengthen our capabilities, expand our reach and support continued growth across Canada, North America and global markets,” Rexel Canada CEO, Jeffrey Moyle announced on LinkedIn. GCG is a leading specialty infrastructure platform providing wire and cable,… Read More…

  • Ontario Announces Additional Funding for Training Seats for In-Demand Careers

    Ontario Announces Additional Funding for Training Seats for In-Demand Careers

    October 19, 2026  The Ontario government has allocated 40,000 new funded seats at publicly assisted colleges and universities to connect more students to good-paying, in-demand careers. This allocation, which is part of a broader $1.7 billion investment to support a total of 70,000 new seats, supports the province’s plan to protect Ontario and build a… Read More…

  • QEII Halifax Infirmary Tower Project Reaches Milestone, Wins Collaboration Award

    QEII Halifax Infirmary Tower Project Reaches Milestone, Wins Collaboration Award

    October 19, 2026 Construction of the new acute care tower at the QEII Halifax Infirmary has reached another milestone, with the Level 8 podium structure now in place. The podium is the lower, wider portion of the building that forms the base of the 14-storey acute care tower. It will house a range of hospital… Read More…

  • Ontario Starts Major Construction on Grimsby GO Station

    Ontario Starts Major Construction on Grimsby GO Station

    October 19, 2026 The Ontario government has awarded a contract for major construction on Grimsby GO Station, marking another milestone in its plan to protect Ontario by building the transportation infrastructure needed to reduce gridlock, shorten travel times and support economic growth across the province. Expected to be completed in the second half of 2027,… Read More…