Marble or stone wall

[up-power]

I have a bank that asked for a proposal to wash this and I'm not sure about the stone on the wall. I will be going to do a test spot on Monday before a give a price. If anyone has dealt with this before any help would be great. Thanks

 

[Paul Kassander]

Usually a good house wash mix will do the trick. looks like some midew growths above it on the sotne wall so some bleach would be in order on this one. Be sure to test your mix in an inconspicious area to be sure there is nothing strange abour the stone but the house wash mix would be my suggestion.

 

[Diamond Jim]

Looks like concrete, glazed brick, granite. House mix and hot water.

 

[up-power]

Building came out great. No problem with the stone just the moss up top was kinda tricky.
Thanks for the input.

 

[Paul Kassander]

Looks great nice job!