---
product_id: 22542996
title: "3M Fire Barrier Mortar, Gray"
brand: "3m"
price: "€ 418.29"
currency: EUR
in_stock: true
reviews_count: 1
category: "3 M"
url: https://www.desertcart.pt/products/22542996-3m-fire-barrier-mortar-gray
store_origin: PT
region: Portugal
---

# Water-mixable, self-leveling 3-hour firestop rating Lightweight & pumpable 3M Fire Barrier Mortar, Gray

**Brand:** 3m
**Price:** € 418.29
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal the deal with 3M Fire Barrier Mortar — where safety meets smart innovation!

## Quick Answers

- **What is this?** 3M Fire Barrier Mortar, Gray by 3m
- **How much does it cost?** € 418.29 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/22542996-3m-fire-barrier-mortar-gray)

## Best For

- 3m enthusiasts

## Why This Product

- Trusted 3m brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safe & Sustainable:** Free from asbestos, MMMF, and halogens—engineered for modern safety standards.
- • **Universal Adhesion:** Bonds seamlessly to various substrates and penetrants, ensuring a secure firestop seal.
- • **Effortless Application:** Ready-to-mix, pumpable mortar adapts to self-leveling or non-sag needs for versatile use.
- • **Lightweight Heat Absorber:** Gypsum-based formula reduces combustion risk by absorbing heat on unexposed sides.
- • **3-Hour Fire Barrier Confidence:** Tested to ASTM E 814 & CAN/ULC-S115 standards for reliable fire protection.

## Overview

3M Fire Barrier Mortar is a lightweight, gypsum-based firestop mortar that mixes easily with water to create a heat-absorbing barrier. It offers up to 3 hours of fire resistance per ASTM E 814 and CAN/ULC-S115 standards, is reinforced with polypropylene fibers, and is free from harmful asbestos and halogens. Designed for versatile application, it self-levels or stays put as needed, adhering to multiple construction materials to protect floors and walls from fire penetration.

## Description

3M Fire Barrier Mortar is a lightweight, gypsum-based powder that mixes with water to form a heat-absorbing firestop for through penetrations in fire-rated floor or wall assemblies. Versatile mortar can be mixed self-leveling or non-sag, and adheres to a range of construction substrates and penetrants. It also acts as a heat sink, reducing the chance of fire on unexposed sides of the assembly.

Review: 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.

## Features

- Ready-to-mix pumpable mortar is deal for firestopping large annular spaces and floors
- Lightweight mortar designed to absorb heat, reducing chance of combustion on unexposed sides
- Polypropylene-fiber reinforced powder mixes with water for self-leveling or non-sag applications
- Contains no asbestos, MMMF or halogens
- Firestop tested for up to 3 hours in accordance with ASTM E 814 (UL 1479) and CAN/ULC-S115

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00ODPFE18 |
| Best Sellers Rank | #239,410 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #611 in Adhesive Caulk #1,000 in Industrial Sealants #104,451 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 |

## Images

![3M Fire Barrier Mortar, Gray - Image 1](https://m.media-amazon.com/images/I/71DR8tAPTDL.jpg)

## Questions & Answers

**Q: Can this be mixed to the consistency of finishing plaster to be used in conjunction with Fire tape when removing a 1 hour door & sealing fire rating ?**
A: No for that you want USG firecode compound. This is a cement product not gypsum

## Customer Reviews

### ⭐⭐⭐⭐⭐ Pleased
*by J***A on March 6, 2025*

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.

## Frequently Bought Together

- 3M Fire Barrier Mortar, Gray
- 3M Fire Barrier Sealant CP 25WB+, Red Color, One-Component, Gun-Grade, Latex-Based, Intumescent Material, 10.1 fl oz Cartridge
- 3M Fire Barrier Sealant CP 25WB+, Red Color, One-Component, Gun-Grade, Latex-Based, Intumescent Material, 20 fl oz Sausage Pack

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**Shop now:** [https://www.desertcart.pt/products/22542996-3m-fire-barrier-mortar-gray](https://www.desertcart.pt/products/22542996-3m-fire-barrier-mortar-gray)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-24*