How to seal & protect a natural stone hearth

Written by john walker
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How to seal & protect a natural stone hearth
Stone naturally is dull in colour but is made shiny through the application of topical sealants. (Ryan McVay/Lifesize/Getty Images)

Sealing stone is not a requirement but helps to limit the amount of staining that results from dirt and debris. A natural stone hearth uses a stone veneer applied to the wall. The soot and smoke from the fireplace will discolour the stone over a long period of time. Applying a topical sealant to the stone allows the natural beauty of the stone to shine through while making cleaning the area easier. The first step to applying a sealant is a thorough cleaning of the surface.

Skill level:
Moderately Easy

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Things you need

  • Detergent
  • Water
  • Sponge
  • Stone sealer
  • Paint brush
  • Dry cloth

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Instructions

  1. 1

    Clean the stone thoroughly with a mixture of water and detergent. Scrub the stone and grout with a sponge to remove any existing dirt or loose debris. Rinse the area thoroughly to remove any soap residue.

  2. 2

    Mix the stone sealant with water according to directions on the package. Some sealants are pre-mixed in spray bottles.

  3. 3

    Spread the sealant onto the stone and grout with a paintbrush or using the included spray bottle. Brush the sealant into the cracks and crevices of the stone with the paintbrush. Allow the sealant to dry according to the drying times on the container.

  4. 4

    Reapply as necessary to get the desired finish.

  5. 5

    Wipe any excess sealant up with a dry cloth.

Tips and warnings

  • Sealants come in a variety of options and applied slightly different depending upon the type and manufacturer. Most sealants are brushed on with a paint brush while others are simply sprayed on like spray paint. Each container will have specific directions based upon the type and manufacturer of the sealant.
  • Allow for ample ventilation while applying any type of sealant.

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