Getting ready to do big Job , and all the flashing and valleys are copper , will Sh or the TSP harm these valleys? will it turn their green,black oxie color or spot it or ??????? any help on this will be apperciated
KID
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Elite Roof Cleaners Roof Cleaning Missouri & Kansas City
I've hit copper flashing , no problem ! if you not sure take a piece of copper or any other material and put the chemical on it ,I do this with rust cleaners, soot cleaners & SH