How to Prevent Acid Staining on Slate

Acid substances such as lemon, vinegar or orange juice can stain natural stone floors easily. Because you commonly use these substances in your home, some homeowners choose to seal their natural stone floors to help prevent the acid stains from damaging them. Choose a natural stone sealer that will work on slate floors and counters, but be aware that the sealer will not protect against harsh acids such as muriatic acid.

Sponge
Soft-bristled brush
Slate sealer

Instructions

- 1
  Dip a sponge into hot water and rub the water over the surface of the slate. This will remove light surface dirt and oils.
- 2
  Gently brush the slate with a soft-bristled brush until you remove heavier stains.
- 3
  Let the slate dry completely for at least 24 hours.
- 4
  Brush slate sealer on the tile. Follow the grain of the tile and apply a very thin coat.
- 5
  Let the sealer dry according to the manufacturer's directions before applying another coat of sealer.
- 6
  Let the sealer dry for 24 hours before using the floor.

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