Pre wet the stone with clean water.
White marble gravestone cleaner.
Marble needs to be treated even more gently than granite.
Inspect the entire headstone for cracks wear and signs of damage.
A more widely available product wet forget moss mold mildew and algae stain remover 29 98 a gallon at home depot is advertised as being suitable for cleaning headstones.
Cleaning weak marble can result in further irreparable damage.
But it hasn t.
As with interior marble cleaning soak the cemetery headstone with water before adding a cleaner.
Soak the stone with water to saturate any growth that may be present.
Clean a marble gravestone.
Wetting the marble first will provide better cleaner spread on the surface and make rinsing easier.
Make and apply a poultice if steps 1 to 3 fail to remove the mold and mildew stains on the marble headstone make a poultice with cotton balls hydrogen peroxide and ammonia.
Only marble that is in good condition should be cleaned.
It is important that you know what type of stone you are dealing with.
If these are present it may be best to leave it as is.
Different types will require different cleaning methods.
Cleaning a white marble gravestone requires care and some special tools but it is a relatively easy task that can be accomplished in one afternoon.
Once the headstone is clean buff the marble dry with a dry and clean cloth.
Steps to clean a marble headstone.