Never use wire brushes or power tools such as sanders or grinders to clean the surface.
Clean gravestones marble.
Wash and buff the granite.
Make a baking soda poultice.
Water based stains step 1.
Look for any obvious.
When you arrive at the gravestone take a few minutes to assess the stone.
If a cemetery waters their grounds with cold water it could fall on the headstones.
Avoid products that contain the chemicals sodium.
Once you have checked out the stone you are ready to start actually cleaning.
Consider an area in the southwest with dry hot temperatures.
Soak the gravestone with clear water and use a plastic spoon or wooden popsicle stick to remove the lichen from the crevices of the gravestone.
If the cold water exposure is lengthy enough to lower the stone s temperature the stone can get damaged.
Apply the poultice to the stain.
Clean a granite headstone.
Water wooden scraper soft cloths non ionic soap ex.
Coat the stains on the granite headstone with the poultice.
Never use household bleach or bleach containing products.
Never employ harsh aggressive scrubbing methods when cleaning and overcleaning should be avoided.
Cleaning gravestones with bleach is never a good idea church said but it s especially bad when you re working on porous stone.
Cleaning the gravestone 1.
Pour half of the mixture over the stains and use a soft bristled brush to clean the stains away.
Ivory or orvus natural bristled brushes.
Mix 1 cup of baking soda 5 tablespoons 73 9 ml of liquid dish soap and enough.
Bleach is alkaline so it doesn t pose the big risk of acidic.