3M 7000031968 Fire Barrier Mortar 5 Gallon Pail

Product Description

The 3M 7000031968 is a cementitious firestop mortar designed for through-penetration fire barrier applications in commercial and residential construction. The product ships as a dry powder that mixes with potable water at variable ratios depending on the application method. When mixed and installed correctly, it resists the spread of fire, smoke, and noxious gases through wall and floor penetrations. It provides up to 3 hours of fire protection in tested and listed systems. The lightweight, off-white formulation with dark flecks is suitable for both self-leveling horizontal pours and trowel-applied vertical installations. Sold in a 5-gallon pail weighing 29.6 pounds.

This mortar is used in through-penetration firestop systems where cables, conduit, pipe, or other services pass through rated wall and floor assemblies. It applies to both new construction and retrofit projects requiring code-compliant fire barrier restoration. The variable mix ratio allows a single product to serve multiple installation scenarios: self-leveling for horizontal decks and trowelable consistency for vertical walls or overhead applications. Contractors, firestop specialty installers, and licensed trades working under fire-rated assembly requirements commonly specify this product.

Key Features

• Up to 3-hour fire protection in tested and listed firestop systems
• Variable mix ratio: 1 part water to 2 parts powder for self-leveling; 1 part water to 3 parts powder for trowelable mortar
• Lightweight cementitious formula mixes with potable water on site
• Off-white finish with dark flecks; suitable for visible installations
• Cost-effective alternative to pre-mixed firestop mortars for large-volume applications
• 5-gallon pail format supports bulk job-site use

Compatibility

Designed for use in tested and listed through-penetration firestop systems involving cables, conduit, pipe, and similar building services penetrating fire-rated wall and floor assemblies.

Installation Notes

Installation must be performed in accordance with the specific tested and listed system details and applicable building codes, including IBC fire-rated assembly requirements. Confirm the annular space dimensions and substrate conditions match the listed system prior to mixing. Do not apply to surfaces that are wet, frozen, or below minimum ambient temperature thresholds without taking appropriate precautions. Always consult the product system listing and safety data sheet before beginning work.

Technical Specifications

• Fire Protection Rating: Up to 3 hours (in tested and listed systems)
• Application Types: Self-leveling (horizontal), trowelable (vertical)
• Mix Ratio (Self-Leveling): 1 part water to 2 parts powder
• Mix Ratio (Trowelable): 1 part water to 3 parts powder
• Mix Ratio (Vertical Surfaces): 1 part water to 3 parts powder
• Color: Off-white with dark flecks
• Container Size: 5-gallon pail
• Weight: 29.6 pounds
• UPC: 00051115549014

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000031968