white spots on flagstone fireplace

by carrie
(VA)

My grandmother has a flagstone fireplace that has been there for years. There are white spots on it (almost like stains) now that we can't figure out how to remove. Any suggestions?

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efflorescence
by: David

Dear Carrie,

It sounds like efflorescence on your flagstone fireplace.

You should call Prosoco at 1-800-255-4255 and ask them about the best product for your project. They're the chemical company my dad's used for years for cleaning bricks and stone.

Great luck!

David

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