Thanks ken about the 48 hour mist in water; but it ain't going to happen on
this project;and for your information the RC Cleaner the other guy used did not
remove the black soots...
Pinheads
.the limestone is bleached and blotchy ;and as  hot water washing may ( I
said may ) just bring residual salts and chems to the surface with the dry cycle;
I am reluctant to proceed with taking on this guys contract until Im sure
there are no salts .
.do they make big litmus paper....or do I just stick my tongue on the side of
the building.is enough to impress the client......Best Michael....

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