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Limestone discoloration

4 years ago

Just completed an outdoor kitchen with fireplace Used limestone for the fireplace and face of kitchen. Ive now noticed that the limestone is discolored wirh a brown/ black patches. Some of the limestone had to be cleaned prior to installation because of mold. I di not know how it was cleaned or with what products. Cedar was used for mantle and pergola. Is this common problem? How do you clean limestone? Is painting the only option to correct this?



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