3M Fire Barrier Sealant FD 150+ Red, Gun-Grade Latex - 4.5 Gallon Drum

In this review of the 3M Fire Barrier Sealant FD 150+ the bottom line is straightforward: this is a purpose-built, industrial firestop sealant for contractors and facility teams who need a re-enterable, flexible seal that is tested for multi-hour fire and smoke containment. The reviewer found the gun-grade, latex-based formula easy to tool and clean up with water, and appreciated that it delivers a continuous, elastomeric barrier with proven ratings for both through-penetrations and construction joints. If your project specification calls for listed firestop materials and an L-rating for smoke, this product should be on your shortlist.

Key Features

• Tested fire performance: Provides up to 4-hour protection in listed construction joints and up to 3-hour protection for through-penetrations when installed per tested systems.
• Smoke L-rating: Offers a smoke seal (L-rating) to help prevent the passage of smoke and noxious gas in occupied spaces.
• Latex-based, gun-grade formula: Water-based and gun-grade for straightforward dispensing, easy tooling and water cleanup on the jobsite.
• Flexible, elastomeric seal: Remains pliable with +/- 19% movement capability to accommodate typical pipe and joint movement without losing the seal.
• High-solids, low shrinkage: The higher solids formulation reduces shrinkage and maintains a monolithic barrier after cure.
• Re-enterable and repairable: Can be re-entered for maintenance or modification of penetrants without destroying the firestop system.

Who It's For

This product is aimed at industrial and commercial contractors, mechanical and firestop installers, and facilities maintenance teams working on fire-rated floor slabs, walls and head-of-wall systems where listed firestop materials are required. It fits projects that specify tested systems to ASTM E814 (UL 1479), CAN/ULC S115 and ASTM E1966 (UL 2079).

It is not intended for consumer sale or general household use; technicians should follow installation instructions and ensure the correct tested system is used for each penetration type. If you need an oil-based or non-reenterable epoxy-style sealant, look to other product families that match those chemistry requirements.

Pros & Cons

Pros

• Tested and listed performance for both through-penetrations and construction joints, giving confidence in specified installations.
• Water-based latex formula allows easy cleanup and simpler handling on site compared with solvent-based alternatives.
• Flexible, elastomeric behavior and re-enterable formulation support movement and future maintenance.
• High-solids composition limits shrinkage and helps maintain a continuous seal over time.

Cons

• Formulated for industrial/occupational use only, so not suitable for DIY consumer applications or retail sale to the public.
• Available in a 4.5 gallon drum which may be oversized for very small jobs or occasional users.

Specifications

Our Verdict

The 3M Fire Barrier Sealant FD 150+ is a practical, tested firestop solution for contractors and facilities that need a flexible, re-enterable seal with recognized listings for fire and smoke. Its water-based, gun-grade acrylic makes jobsite handling and cleanup simple, and the proven multi-hour ratings mean it is a pragmatic choice where code-compliant, listed firestopping is required.

Frequently Asked Questions

Is this product suitable for pipe penetrations?
Yes, it is listed for through-penetrations and is formulated to accommodate typical pipe movement when installed in approved systems.

Can it be cleaned up with water?
Yes, the latex, water-based formula allows easy cleanup with water before the material cures.

Is this intended for consumer DIY use?
No, it is intended for industrial and occupational use only and is not for consumer sale or residential DIY applications.