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Questions and Answers for DAP 10.1 oz. Black High Heat Mortar Sealant (12-Pack)

Internet #205030320

Model #7079818854

Store SKU #1000058251

  • Non-combustible sealant for fireplaces and wood-burning stoves
  • Strong adhesion to firebrick when both wet or dry
  • ASTE E136 tested and can withstand up to 2000 degrees Fahrenheit

Questions & Answers

28Questions
caret
Q:would this work to glue cement board in a smoker thanks ray
by|Oct 26, 2019
1 Answer
Answer This Question

A:  Thank you for posting your inquiry. DAP High Heat Mortar is not recommended for food contact or exterior applications.

by|Oct 28, 2019
    caret
    Q:Can this be used to make a seal around a firebox door to a steel smoker.
    by|Oct 27, 2018
    2 Answers
    Answer This Question

    A:  DAP High Heat Mortar can be used for sealing wood-burning stoves, however, because this product dries to a hard mortar like texture, care should be taken when applying it, to ensure that it does not impede the function of the door's normal operation. Example: an excessively thick application of sealant may not permit the door or its latch to close/seal properly.

    by|Apr 2, 2019
      1 found this answer helpful

      A:  As long as at never gets wet, you'll be great. It dissolves in water.

      by|Oct 27, 2018
        caret
        Q:Can this product be used to temporarily repair cracks on concrete roof tiles? I know replacing the tiles are the best way to go but we can't afford it right now. Thanks.
        by|Aug 21, 2018
        2 Answers
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        A:  This product is only good for repairing mortar where there's no chance of it ever getting wet. This stuff dissolves rapidly when wet. Put it near heat and it gets hard fast and stays that way.

        by|May 6, 2023
          1 found this answer helpful

          A:  DAP High Heat Mortar is intended for interior use only.

          by|Apr 2, 2019
            2 found this answer helpful
            caret
            Q:how well does it work on a deep crack on a taxiway in FAA rated asphalt?
            by|Feb 12, 2018
            2 Answers
            Answer This Question

            A:  Water will wash it away. It works great til it gets wet.

            by|May 5, 2023

              A:  DAP High Heat Mortar is a non-combustible silicate cement used for patching chipped firebrick in fireplaces and sealing wood-burning stoves and for applications in wood frame construction where an ASTM E136 non-combustible sealant is required, such as sealing around vents, pipes, ducts, and chimneys at ceiling and floor level prior to the application of drywall products. This product is only rated for interior application.

              by|Apr 2, 2019
                1 found this answer helpful
                caret
                Q:Is this sold in Singles? I don't need 12....
                by|Aug 5, 2017
                1 Answer
                Answer This Question

                A:  Hi Bob, unfortunately it is not. We apologize for the inconvenience. We appreciate your business and look forward to serving you in the future. Thank you for shopping Home Depot!

                by|Aug 14, 2017
                caret
                Q:Can I use this to seal a vent pipe directly off of the unit?
                by|Feb 14, 2017
                1 Answer
                Answer This Question

                A:  DAP® High Heat Mortar can be directly applied to most metallic vent pipe, however, it is recommend for use on interior applications only.

                by|May 4, 2023
                  caret
                  Q:slight leak in the pipe at joints.
                  by|Dec 9, 2016
                  1 Answer
                  Answer This Question

                  A:  DAP High Heat Mortar can be used for sealing stove pipe joints, however it is only rated for interior use.

                  by|Oct 6, 2020
                    1 found this answer helpful
                    caret
                    Q:I'm using black granite n an outdoor grill and don't want to see the mortar n between tiles, can I use this to cover spacings
                    by|Oct 27, 2016
                    1 Answer
                    Answer This Question

                    A:  DAP High Heat Mortar is recommended for interior use only.

                    by|May 4, 2023
                      1 found this answer helpful
                      caret
                      Q:Is this product waterproof? Can it be used in all types of weather?
                      by|Sep 9, 2015
                      1 Answer
                      Answer This Question

                      A:  DAP® High Heat Mortar is recommended for interior use only.

                      by|May 3, 2023
                        caret
                        Q:my fire place wall was built with steel panel and bricks in 1941. Over the years the mortar between the steel panel and bricks became cracked. Can this Black High Heat Mortar Sealant is an answer to repair the cracked mortars between the bricks and between metal and bricks?
                        by|Dec 30, 2014
                        2 Answers
                        Answer This Question

                        A:  The best course of action will be to remove as much of the loose material as you can. Once the High Heat Mortar as been appiled and it has set, it should seal properly. This product is not UL certified however. I have used this type of product on the firebrick inside my fireplace with good results.

                        by|May 3, 2023

                        A:  DAP High Heat Mortar is designed primarily for small touch up repairs. For larger and more involved repairs, a dry mix refractory cement may be the better choice. Given the age of the fireplace, a proper inspection by a professional may also be in order.

                        by|May 3, 2023