SUPPLIES NEEDED FOR CLEANING HEADSTONES
First, you’ll need some cleaning supplies to get started. Supplies vary based on the gravestone material.
Granite, Sandstone, Slate Headstones
- Clean water
- Soft-bristle brush
- Non-ionic detergent (1 oz per gallon of water)
- Biocidal cleaning solution
- Gloves
- Sponge
- Spray bottle
ASSESS THE HEADSTONE
First and foremost, assess the condition of the headstone. If it shows signs of flaking, crumbling or cracking, then avoid using hard-thistle brushes, do not scrape, and avoid power washing. Be sure to avoid using bleach because it causes brown staining over time.
HOW TO CLEAN GRANITE HEADSTONES
- Soak: Soak the stone with a hose or by dumping a bucket of clean water over the entire surface. Headstones can be very porous and can soak up the cleaning solution before it has a chance to work. Spraying down the headstone first will help maximize the effectiveness of the cleaning solution.
- Mix: Non-ionic detergents are generally recommended for cleaning granite headstones. Mix just one-ounce of non-ionic detergent to 5 gallons of water.
- Apply: Use a brush to gently apply the cleaning solution. Always test the solution to ensure the best results after the area has dried.
- Scrub: With a soft bristle brush, gently scrub the headstone in an orbital motion from bottom to top. Avoid any cracks or flakes when scrubbing. Avoid cleaning the entire stone if there is an excessive amount of scratches or flaking.
- Rinse: Always rinse the stone from bottom to top to avoid streaking. Rinse with a hose or bucket of water with clean, fresh water until the stone is clear of any cleaning solution.