Applying & Using Poultice
- Prepare the poultice. If using powder, mix the cleaning agent or chemical to a thick paste the consistency of peanut butter. If using paper, soak in the chemical and let drain. Don’t let the paper drip.
- Wet the stained area with distilled water.
- Apply the poultice to the stained area about Â¼ to Â½ inch thick and extend the poultice beyond the stain by 1 inch. Use a wood or plastic scraper to spread the poultice evenly.
- Cover the poultice with plastic and tape the edges to seal it.
- Allow the poultice to dry thoroughly, usually about 24 to 48 hours. The drying process is what pulls the stain out of the stone and into the poultice material. After about 24 hours, remove the plastic and allow the poultice to dry.
- Remove the poultice from the stain, rinse with distilled water and buff dry with a soft cloth. Use the wood or plastic scraper if necessary.
- Repeat the poultice application if the stain is not removed. It may take up to five applications for difficult stains.
- If the surface is etched by the chemical, apply polishing powder and buff with burlap or felt buffing pad to restore the surface.