Cleaning with a Poultice:

What is a Poultice?
A poultice is a paste that used to draw out the stain into the absorbent material. It is made by mixing a liquid cleaner or chemical with an absorbent material. Kaolin, Fullerís earth, whiting, diatomaceous earth, powdered chalk, white molding plaster, talc, white cotton balls, white paper towels or gauze pads can be used to make a poultice. One pound of poultice is enough to cover one square foot area. Do not mix acidic chemicals with whiting or iron type clays such as Fullerís earth because the reaction will reduce the effect of the poultice.

How to Make and Apply a Poultice:

  • Mix powder with chemical to a thick paste until the consistency of peanut butter is achieved. If you are using cotton balls or paper towel, soak and drain the material.

  • Spray distilled water onto stained area.

  • Apply ľ to Ĺ inch poultice to the area covering about one inch beyond stain.

  • Using several layers of film or plastic, cover the poultice and seal it by taping the edges.

  • Wait until poultice is dry (24 to 48 hours).

  • Remove plastic cover and let poultice completely dry.

  • Remove poultice (use wood or plastic scraper if necessary) and wash area with distilled water and dry with a soft cloth.

If the surface is etched by poultice please refer to etch marks section of this manual for instructions. Some stains may require up to five applications. Repeat this process if stain is not removed. If the stain is too difficult to remove by using poultice please call professionals for alternative methods.


- Care and cleaning of natural stone surfaces, 2005. Marble Institute of America.


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