Metacaulk Putty is a non-curing, moldable, one-component firestop material designed for through-penetration systems.

When exposed to fire, it intumesces, forming an insulating char that prevents the spread of flames, smoke, gas, and water through penetrations.

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Key Features:

• Safe for Confined Spaces: Contains no volatile solvents and is suitable for use in occupied areas.
• Easy to Apply: Can be hand-applied with no mixing, special tools, or additives required.
• Strong Adhesion: Bonds to all common building surfaces for a secure seal.
• Fire-Rated Protection:
  • Provides up to 3-hour fire resistance in compliance with ASTM E 814, UL 1479, and ULC/CAN4-S115-M test standards.
  • Pads have an STC Rating of 60, ensuring excellent soundproofing.
• One Thickness for Versatile Use:
  • A single 1/8" pad thickness provides a 1–2-hour fire rating.
  • No additional putty is required to plug the ends of electrical metallic tubes or conduits at their box connections.
• Code Compliance: Required in rated partitions where the horizontal separation of opposite-facing electrical boxes is under 24 inches.
• Safe & Non-Hazardous:
  • No asbestos fillers
  • D.O.T Classification: Not Regulated

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Why Choose Metacaulk Putty?

✔ Reliable Fire Protection – Intumescent technology prevents fire and smoke spread.
✔ Quick & Easy Installation – No special skills or tools required.
✔ Safe for Any Environment – No volatile solvents, ideal for confined spaces.
✔ Meets Building Code Requirements – Required in rated partitions for proper firestop compliance.

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Upgrade Your Firestop System with Metacaulk

For trusted, high-performance fire protection, choose Metacaulk Putty – the easiest and most effective solution for securing electrical penetrations and maintaining fire-rated partitions.

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Documents

• Certified Clean Air Gold Certificate
• Certificate of Compliance FM Approvals 3971 an 4990
• PDS - English
• PDS - Spanish
• SDS - English
• SDS - Spanish