Jill from New York called to find out how to clean a stain in Granite from an apple core lying on a paper towel.
Jill explained that her new gray granite countertops were installed only a few days prior, AND the installers had sealed her granite. The area underneath the paper towel was dark, and she was worried that the apple juice may have stained her granite.
Most of the time, these types of concerns are merely from condensation forming under a solid object, plastic or paper. Granite IS absorbent if untreated (or sealed with a poor quality sealer), and liquids can easily penetrate the granite and darken the stone.
In Jill’s case, it is evident that the installers used an inferior sealer, and very likely, the darkness is only moisture that has penetrated. I instructed her to flood the area with a solution of 1-part HMK R55 Intensive Cleaner with 4-parts warm water, and allow to soak for 15-20 minutes. Wipe up with a sponge, and rinse well with hot water.
After allowing to dry for 24 hours, the residual juice and moisture should have dried, and the granite returned to its original look. In high humidity areas you may need to apply a fan or heater to completely dry the area.
Once stain is removed and granite is completely dry it is time to protect the granite with a Professional Grade Stone Impregnator. HMK-Germany makes the worlds best stone sealers. For an invisible look, use HMK S34 Silicone Impregnator.
For professional assistance with your stone care cleaning and maintenance, please contact StoneCareOnline at 800-380-6881