




🔥 Seal the deal with 3M Fire Barrier Mortar — where safety meets smart innovation!
3M Fire Barrier Mortar is a lightweight, gypsum-based, pumpable mortar designed for firestopping large annular spaces and floors. It mixes easily with water for self-leveling or non-sag applications, providing a tested 3-hour fire barrier per ASTM E 814 and CAN/ULC-S115. Reinforced with polypropylene fibers and free from harmful substances like asbestos and halogens, it absorbs heat to reduce combustion risk on unexposed sides, ensuring reliable, versatile fire protection in demanding construction environments.



| ASIN | B00ODPFE18 |
| Best Sellers Rank | #191,452 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #469 in Adhesive Caulk #770 in Industrial Sealants #85,979 in Hardware |
| Date First Available | October 11, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 29.6 pounds |
| Item model number | 98040056081 |
| Manufacturer | 3M |
| Product Dimensions | 12.89 x 12.89 x 13.25 inches |
J**A
Pleased
Quality product for a fair price. 3M Fire Barrier Mortar meets the engineers specs for fire protection in most natural gas plants. The product arrived quickly, and applied well. We installed this product like a stucco coat around structural steel beams to give a 3 hour rated fire barrier. The customer is happy and that makes a contractor happy.
Trustpilot
4 days ago
2 weeks ago