How to Clean a Historic Gravestone

This video shows step by step how to use D/2 Biological Solution to clean a historic gravestone or monument.  Sometimes the moss and mold on a historic monument can be aesthetically pleasing, so the first question is why even clean the monument?  The simple answer is that the moss and mold are feeding on the stone and thus, actually destroying the monument.  The next question to ask is whether the monument is in stable enough condition to clean.  As you will learn in this video, the first rule of cemetery conservation and preservation is to do no harm.

A third question to ask is what type of cleaner is safe for historic tombstones, safe for you, and safe for the environment.  Based on recommendations of a study commissioned by the U.S. Park Service, Historic Cemetery Preservation uses the same cleaner used on our national cemetery monuments, D/2 Biological Solution available at  D/2 Biological Solution eliminates molds and mildews without even scrubbing the stone and the stone will continue to appear cleaner over time.

Enjoy the video!  Let us know if you have follow-up questions and we would love to see pictures.  You can email your before (don’t forget the before picture) and after pictures to

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