WARNING!! THERE ARE LAWS IN PROTECTING ILLINOIS CEMETERIES!!
If you plan to clean and/or preserve a gravestone, first please read the following information on “Cemetery Preservation” provided by the Historic Preservation Division of the Illinois Department of Natural Resources.
Preserving a gravestone ‘wrong’ can be catastrophic and dramatically shorten the life of the gravestone. Doing it the ‘right’ way can help preserve the life of a gravestone for many more years.
View the website link to begin your research in preserving a gravestone:
https://www2.illinois.gov/dnrhistoric/Preserve/Cemetery/Pages/default.aspx