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Article Number: 1823 | Rating: Unrated | Last Updated: Fri, Jun 5, 2009 at 12:00 AM |
Q.I have an Indian Sandstone outdoor patio that has become discoloured with small black spots (mildew ?) Now I have read a previous answer that outdoor stone should not be sealed and if its bad stone then "sooner or later you will have to use a jack-hammer." But in the meantime do you have any suggestions as to how to clean it and try prevent it happening again.
A. Try using our mb-9 which is a great mildecide for stone. Dont seal your stone outdoors,Maurizio was right.
Use the mildecide every once on a while and you should be
able to keep it at bay.
Stu Rosen
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