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3M CP-25WB+ Fire Barrier Sealant


3M CP-25WB+ Fire Barrier Sealant

3M Fire Barrier Sealant CP-25WB+ is ready-to-use latex-based, intumescent sealant that dries to form a monolithic firestop seal. 3M CP25WB+ Fire Barrier Sealant helps control the spread of fire, smoke and noxious gasses before, during and after exposure to a fire when installed in accordance with a listed through penetration or fire-resistive joint assembly system.

The unique intumescent property of this material allows 3M CP-25WB+ to expand and help maintain a firestop penetration seal for up to 4 hours as penetrants are exposed to fire. Exhibits excellent adhesion to a full range of construction substrates and penetrants. 

  • Firestop tested for through penetration applications up to 4 hours in accordance with ASTM E 814 (UL 1479) and CAN/ULC S115
  • Applied with conventional caulking equipment with excellent caulk rate
  • Sag-resistant properties offer clean application as well as strong adhesion
  • Water-based and paintable sealant provides easy application and clean-up
  • Sealant is re-enterable and repairable
  • Fire resistance tested for static construction joint systems in accordance with ASTM E 1966 (UL 2079)
  • Sealant helps minimize sound transfer

CP-25WB+ Spec Sheet

Availability: Usually Ships Same Day

Part NumberSizePrice
CP-25WB+10.1 fl. oz. cartridgeEach: $9.57