---
product_id: 671814
title: "DAP High Heat Fire Resistant Mortar, 10 Oz, Black (7079818854)"
brand: "dap"
price: "R$178"
currency: BRL
in_stock: true
reviews_count: 13
category: "Dap"
url: https://www.desertcart.com.br/products/671814-dap-high-heat-fire-resistant-mortar-10-oz-black-7079818854
store_origin: BR
region: Brazil
---

# Easy water clean-up Withstands up to 2000°F Bonds & repairs firebrick DAP High Heat Fire Resistant Mortar, 10 Oz, Black (7079818854)

**Brand:** dap
**Price:** R$178
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal the heat, stop the smoke — be the fireproof pro everyone trusts!

## Quick Answers

- **What is this?** DAP High Heat Fire Resistant Mortar, 10 Oz, Black (7079818854) by dap
- **How much does it cost?** R$178 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/671814-dap-high-heat-fire-resistant-mortar-10-oz-black-7079818854)

## Best For

- dap enthusiasts

## Why This Product

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

## Key Features

- • **Precision Seal:** Perfectly fills gaps up to 0.06 inches, creating airtight, smoke-proof fire stops.
- • **Firebrick Fixer:** Seamlessly repairs chips and cracks, bonding fire bricks rock-hard for lasting durability.
- • **Clean & Convenient:** Water-based formula allows effortless clean-up before curing—no harsh chemicals needed.
- • **Ultimate Heat Shield:** Non-combustible ASTM E136 certified sealant that endures extreme temperatures up to 2000°F.
- • **Interior-Ready & Paintable:** Low odor and paintable once heat-cured, ideal for stylish, safe indoor applications.

## Overview

DAP High Heat Fire Resistant Mortar is a black, silicate cement paste designed for wood-frame construction and fireplace repairs. Certified non-combustible per ASTM E136, it withstands temperatures up to 2000°F, bonds fire bricks, and seals gaps up to 0.06 inches. Its water-cleanable, low-odor formula sets rock hard when fired and is paintable, making it the go-to interior firestop sealant for professionals demanding safety and durability.

## Description

Product Description DAP High Heat Fire Resistant Mortar is a non-combustible silicate cement for applications in wood frame construction where an ASTM E136 non-combustible sealant is required, such as filling around vents, pipes, ducts and chimneys at ceiling and/or floor level prior to the application of drywall products. It was tested in accordance with ASTM E136 and withstands temperatures up to 2000 degrees Fahrenheit. It can also be used to patch chipped or cracked firebrick in fireplaces or wood-burning stoves. Adheres firmly to firebrick when wet or dry and sets rock hard when fired. Easy water clean-up. Works for interior uses. From the Manufacturer A non-combustible silicate cement for applications in wood-frame construction where and ASTM E 136 sealant is required. Can also be used for patching and sealing around fireplaces and wood-burning stoves. Withstands temperatures up to 2000 degrees F. Sets rock hard when fired. Easy water clean-up. For interior use only.

Review: creates a good seal - worked very well. I used it to seal joints on a wood stove pipe. After applying it appeared to flow into the seam creating a good seal. Wish they made it in a smaller tube, I have a lot left over.
Review: Works well on pellet grills - This high heat mortar worked great. I was getting water that would leak between the pellet hopper and grill on my Pitboss pellet grill. I ordered this and used it to seal the gap between the grill and hopper. I also used this to seal between the grill and shelf to stop Walter from running down and filling my drippings bucket. This works great and is holding up well in the high heat areas touching the grill.

## Features

- Draft, smoke, fireblock sealant for applications in wood-frame construction where an ASTM E136 non-combustible sealant is required
- Non-combustible silicate cement fireplace sealant repairs small chips or cracked fire brick, re-points mortar joints between fire bricks and bonds fire bricks together in fireplaces and wood burning stoves
- Fire stop sealant cleans up easily with water and sets rock hard once fired
- Sealant adheres well to masonry and is paintable once heat cured
- Low odor sealant can be used for interior applications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0006MXS4C |
| Best Sellers Rank | #3,127 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Fire Barrier Caulk #27 in Industrial Sealants |
| Brand | DAP |
| Color | Black |
| Date First Available | February 17, 2007 |
| Department | Unisex-Adult |
| Full Cure Time | 1 to 2 at 500 Degrees Fahrenheit Hours |
| Global Trade Identification Number | 00070798188549 |
| Initial Hardening Time | 24 Hours |
| Is Discontinued By Manufacturer | No |
| Item Form | Paste |
| Item Weight | 10.1 ounces |
| Item model number | 7079818854 |
| Liquid Volume | 10 |
| Manufacturer | DAP Products Inc. |
| Material | Silicate Cement |
| Maximum Gap Fill | 0.06 Inches |
| Number of Items | 1 |
| Product Dimensions | 11.5 x 2 x 2 inches |
| Surface Recommendation | Interior |
| Temperature Range | 40 to 100 Degrees Fahrenheit |
| UPC | 070798188549 |
| Unit Count | 10.1 Ounce |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** DAP
- **Color:** Black
- **Full Cure Time:** 1 to 2 at 500 Degrees Fahrenheit Hours
- **Item Weight:** 10.08 ounces
- **Liquid Volume:** 10

## Images

![DAP High Heat Fire Resistant Mortar, 10 Oz, Black (7079818854) - Image 1](https://m.media-amazon.com/images/I/61ZlRnVApxL.jpg)

## Questions & Answers

**Q: I'm looking to attach some tin tiles to sheetrock. Think this will work?**
A: I think that you would have better results using the following item: "Dap 27450 Beats The Nail All-Purpose Construction Adhesive 10.3-Ounce".  Make sure that you remove any oily film that may be on the tin before applying the construction adhesive.

**Q: Can this be used to install wood stove door gaskets?**
A: YES!

**Q: Is the item waterproof? Can it be used outside for repairs in all weather conditions?**
A: Yes it is waterproof.
I used it around my flue pipe on the roof.
Stuff works great. I would do 2 layers instead of one.

**Q: Has anyone had success with this product without fire curing?  Manufacturer says it must be fire cured but I need a fire seal of 2000F+ but can't fire**
A: I used this to seal the storm collar and flashing around my class A chimney penetrating through my roof.  That installation definitely was not fire-cured, and has held up extremely well.  It does cure very hard, but has performed well for my application.  I check, the seals when I clean my chimney every year, and 11-years in all is still well.

## Customer Reviews

### ⭐⭐⭐⭐⭐ creates a good seal
*by J***D on January 13, 2026*

worked very well. I used it to seal joints on a wood stove pipe. After applying it appeared to flow into the seam creating a good seal. Wish they made it in a smaller tube, I have a lot left over.

### ⭐⭐⭐⭐⭐ Works well on pellet grills
*by J***. on December 1, 2025*

This high heat mortar worked great. I was getting water that would leak between the pellet hopper and grill on my Pitboss pellet grill. I ordered this and used it to seal the gap between the grill and hopper. I also used this to seal between the grill and shelf to stop Walter from running down and filling my drippings bucket. This works great and is holding up well in the high heat areas touching the grill.

### ⭐⭐⭐⭐⭐ Good
*by P***S on November 14, 2025*

Good product but bad US postal shipping

## Frequently Bought Together

- DAP 7079818854 High Heat Mortar Fire Stop Caulk, 10 Fluid Ounces, Black
- Minuteman International Cast Iron Clean-Out Door, 8 by 8-Inch,Black
- Minuteman International Cast Iron Ash Dump, Black

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**Shop now:** [https://www.desertcart.com.br/products/671814-dap-high-heat-fire-resistant-mortar-10-oz-black-7079818854](https://www.desertcart.com.br/products/671814-dap-high-heat-fire-resistant-mortar-10-oz-black-7079818854)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-01-23*