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DAP 7079818854 High Heat Mortar Fire Stop Caulk, 10 Fl Oz, Black

4.5 out of 5 stars 1,829 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Fire Barrier Caulk by DAP

List Price: $11.04 Details
Price: $7.67 ($0.77 / Fl Oz) Get Fast, Free Shipping with Amazon Prime & FREE Returns
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  • Adhesives & Sealants
  • Country of manufacture: United States
  • Manufacturer: Dap
  • Super tough, high temperature mortar
  • Sets rock hard when fired
  • Applies easily
  • Stops air leaks
  • Saves energy
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Customer ratings by feature

Easy to use
4.4 4.4
Easy to clean
4.1 4.1
Value for money
3.8 3.8
Adhesion
3.5 3.5

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  • DAP 7079818854 High Heat Mortar Fire Stop Caulk, 10 Fl Oz, Black
  • +
  • Rutland Products 80 Hi-Temp Paint, Fl Oz (Pack of 1), Black, 12
  • +
  • Rutland Fireplace Mortar Cartridge, 10.3-Ounce, Gray - 63G
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    Customer Rating 4.5 out of 5 stars (1829) 4.6 out of 5 stars (45) 4.6 out of 5 stars (481) 4.6 out of 5 stars (816) 4.5 out of 5 stars (303)
    Price $7.67 $12.56 $11.97 $9.99 $14.93
    Sold By Amazon.com BEYOND YOUR HOME Gatzies Amazon.com Amazon.com
    Color Black Black Black Black Orange
    Item Dimensions 11.5 x 2 x 2 inches 2 x 2 x 12 inches 2 x 2 x 11.25 inches 2 x 2 x 11.5 inches 2.5 x 2.5 x 8.5 inches

    Product Description

    Product Description

    Silicate Cement, Base Silicate Cement, Size 10.1 oz., Container Type Tube, Color Black, Specific Gravity 1.8, Performance Temp. Range 0 Degrees to 2000 Degrees F, Flash Point Greater Than 200 Degrees F, Application Time 1 hr., Application Temp. Range 40 Degrees to 100 Degrees F, For Use With Standard Caulk Gun, Meets ASTM E136

    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.

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    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    1,829 global ratings

    Top reviews from the United States

    Reviewed in the United States on September 16, 2022
    Reviewed in the United States on July 28, 2022
    Reviewed in the United States on July 17, 2022
    One person found this helpful
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    Reviewed in the United States on January 29, 2021
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    5.0 out of 5 stars Gaps between brick and fireplace insert (smoke damage)
    By MommyofTwo on January 29, 2021
    The insert we had was not sealed correctly when we bought the house. We started noticing smoke damage from around the sides where the brick wasn't sealed to the fireplace insert and created gaps. I did tons of research and even went to all the big box hardware stores to no avail. Apparently I was the only person who had ever experienced this because nobody was able to recommend a solution. I took a risk and found this in combination with MEECO'S RED DEVIL 1105 Fireplace Insert Insulation. We burn HOT fires and I needed something that would resist catching fire or melting with the hot fires. While this isn't "rated" for more than a few hundred degrees Fahrenheit, I took a chance. I used it to seal from the inside of the fireplace along all the seams and edges. It was messy, and required two applications. The first adhered fine, but shrinks so I had to do another seam to truly seal all the little gaps. We burn our fires once again and (upwards of 500 degrees) and it is holding strong, no more smoke damage to my brick anymore. Fresh coat of pain on the brick!
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    10 people found this helpful
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    Reviewed in the United States on May 26, 2022
    Reviewed in the United States on April 6, 2019
    Customer image
    5.0 out of 5 stars Works awesome to seal segmented indoor chimney
    By The Longs on April 6, 2019
    This works fantastic for my purpose. In my basement is a woodstove with one of those god-awful chimneys that has all the segmented sections that let’s air in to create creosote or in the summer if it reverses it let’s smoke smell out. After I took it apart and cleaned it thoroughly I put this stuff on each section as I was putting it back together. Keep a bunch of wet paper towels are wet rags handy as you wipe excess off with your fingers as you go. I’d say in 15 to 20 minutes it was semi hard. Then I just started a fire to fire the material. I have no smoke smell anymore. The draft is stronger to because there’s not air leakage. Over the next few days of having fires the excess that I didn’t quite wipe off or crack and fall to the ground but the stuff in the joints is staying strong. It’s not the prettiest up close but when you’re not standing right next to it you really don’t notice it. it dries to a very dark charcoal gray almost black. If I’ve gone slower I could’ve made it much less messy. It shows up more in the picture than it does in real life. You could definitely paint it with grill paint if you want to do afterwards. A+, five stars, two thumbs up, would play with grey fire smoo again!
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    13 people found this helpful
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    Reviewed in the United States on January 29, 2022
    Reviewed in the United States on April 6, 2022

    Top reviews from other countries

    scubaphil
    4.0 out of 5 stars Worked well
    Reviewed in Canada on February 17, 2018
    timbo
    4.0 out of 5 stars A bit messy to use, but it works well
    Reviewed in Canada on March 19, 2013
    SailorSam
    2.0 out of 5 stars Two Stars
    Reviewed in Canada on January 12, 2018
    Terry
    5.0 out of 5 stars Five Stars
    Reviewed in Canada on June 20, 2015