How can I safely clean a granite gravestone?

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This may be a silly question. My parents gravestone is a light grey granite. It has some mold-like discoloration in the lettering and some light grey/green flat growths on the surface. Is there a way to take care of both problems without discoloring or damaging the stone. How can I prevent it from coming back? Thanks Patty Carr

  8 answers
  • JoAnn JoAnn on Mar 11, 2018
    Use vinegar mixed with Dawn dish soap and scrub. Rinse with water and wipe dry

  • Lynn Lynn on Mar 11, 2018
    Patty, have you tried The baking soda/vinegar scrub, toothpaste works well Also. Then give it a light spray of Pledge. Worth A Try.

  • Margolynluvsu Margolynluvsu on Mar 11, 2018
    It's a mold for sure. Bleach will not harm granite. Scrub it thoroughly and rinse. The mold will come back. Apparently the stone is in a darker area? Either way bleach kills mold.

  • Cindy Cindy on Mar 11, 2018
    Hi Patty, First, let me offer my condolences on the loss of your parents. It sounds like it needs to be sealed. I would contact the place of purchase and explain this to them. They may know a remedy or they might offer to seal it. Either way, I would start there before applying anything else on it. I did a bit of research on this and found a couple sources that said to clean with equal parts water and household bleach. They also say not to use a wire brush. It could leave scratches. After washing, be sure to rinse with clean water. I hope this helps you. Again, my condolences.

  • JE JE on Mar 11, 2018
    Baking soda,vinegar and bleach .... scrub with a firm brush

  • Janet Pizaro Janet Pizaro on Mar 11, 2018
    To be honest I would speak to the cemetery before touching something so precious

  • Eil22229440 Eil22229440 on Mar 11, 2018
    Nice soapy water and a not-too-bristly/coarse brush. Nice of you to take care of their resting place!