How to Clean Smoke-Stained Limestone

Natural Liquid Soap

• 1

  Place absorbent drop cloths or towels beneath or around the limestone. This cloth will protect the area around the stone from the water and cleaning products.

• 2

  Moisten the smoke-stained limestone with warm water. Submerge a sponge in water and squeeze the water out onto the limestone if you’re cleaning a surface such as a fireplace or countertop.

• 3

  Pour a small amount of neutral pH liquid soap onto a nylon bristle scrub brush. Scrub the soot on the brick in a circular motion.

• 4

  Rinse the limestone with warm water. Dry with dry towels or cloths.

Chemical Cleaner

• 5

  Protect the area around the limestone with drop cloths or towels. Put on rubber gloves to protect your hands and protective glasses to shield your eyes from potential splashing.

• 6

  Soak a sponge and squeeze out the water over the smoke-stained limestone to moisten the material.

• 7

  Fill a bottle halfway with water. Add an equal amount of trisodium phosphate to the water bottle. Shake the bottle gently to mix the solution.

• 8

  Spray the soot with the TSP solution. Scrub the surface with a nylon bristle scrub brush.

• 9

  Rinse the area thoroughly with warm water. Dry the limestone with towels or absorbent cloths.