How to Clean a Gravestone
Cleaning gravestones can be a rewarding experience: it’s a great workout and a chance to spend time outdoors. If you ever feel inspired to tidy up some markers in your local cemetery, here’s some helpful information to get you started.
Marble Headstones
Supplies: Clean water, Soft-bristle brush, Ammonium hydroxide detergent or household ammonia (1 oz per gallon of water), Gloves, sponge, spray bottle.
Wet the stone thoroughly with clean water. Dilute ammonium hydroxide (1:4 ratio) for light-colored stones. Test in a small area first, then gently apply the solution with a soft brush, using circular motions. Then wash away all residue with fresh water. Keep the stone wet throughout the process.
Granite, Sandstone, & Slate Headstones
Supplies: Clean water, Soft-bristle brush, Non-ionic detergent (1 oz per gallon of water), Biocidal cleaning solution, Gloves, sponge, spray bottle.
Wet the entire surface with clean water. Combine non-ionic detergent with water (1 oz per 5 gallons), then gently spread the solution with a soft brush. Use a circular motion, avoiding any cracks or flakes. Flush with fresh water.
For all stone types, use only soft brushes and neutral pH cleaners. Test cleaning solutions on a small area first, and rinse thoroughly to remove all cleaning residue. DO NOT use bleach, acidic cleaners, or high-pressure washing, along with scraping or sandblastngi the surface. Avoid overcleaning- frequent cleaning can cause deterioration. By following these guidelines, you can help preserve the beauty and integrity of grave markers for generations to come.
There are lots of great websites out there with more info. This image is from the https://www.gravestonepreservation.info website.
