How To Clean Limestone Headstone. By using a spray bottle or even a pump sprayer, you can use less water and ensure a clean rinse each time. You won’t have to wipe, scrub, rub or pressure wash the surface.
Next, thoroughly wet the headstone, gravemarker or memorial using your sponge and/or by pouring water over the surface(s) you wish to clean. Because marble is a crystalline, metamorphosed limestone, composed primarily of calcite and dolomite, it is more susceptible to erosion and decomposition due to exposure. If you were to pour bleach in a glass and leave it in the sun to evaporate, you would find crystals left behind.
Spraying down the headstone first will help maximize the effectiveness of the cleaning solution.
Take some warm water and use it to clean the surface of the limestone. These are also optional, in the event that the headstone may need more help. Next, you’ll clean your limestone using water and soap. Locate the coiled hose inside the sprayer and fully extend the hose.