Stain sealing under German smear finish on brick

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CallMeChaz

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Mar 27, 2022
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Recommendations for apply a thinset smear to fireplace bricks often mention "sealing" them to prevent stains from bleeding through. Sealers like Miracle 511 actually aid in removing excess grout from brick surfaces. If nothing else, it should help wipe some of the smear off more easily while it is wet. Would that not cause bonding problems for my smear? Or will it be fine once it has dried? Not sure what product to use as a stain seal. Hoping someone has done this before.
 

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