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Removing black mold from limestone house

Mold Kill
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Q. How can I clean the outside of my house?

It is a white Texas limestone and has turned black and green mostly on the north side. I tried Pressure spraying and it removes the green but not the black.

Thanks for any advice,

William Ashness
- Kyle, Texas
2003

A. Try a cup of clorox in a gallon of water, soft brush, cool day.

Don't let mixture dry on stone. Keep wet for twenty to thirty minutes then wash with dish soap and water. Rinse & let dry. Repeat as needed.

Don Jones
- Victoria, Texas
2003

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