boho444 14 Report post Posted May 22, 2014 The roof is made of black copper and there are streaks of black going on to the walls which is limestone. Any idea on how to remove such stain? Share this post Link to post Share on other sites
0 boho444 14 Report post Posted May 22, 2014 Confused because I would expect the stain to be green if it was from the copper roof. Hopefully just some pressure will remove it. Sent from my HTC One using Tapatalk Share this post Link to post Share on other sites
0 James 625 Report post Posted May 22, 2014 You should do test samples with a stone restoration product and try other chems. Best way of learning is sampling and testing stuff . 1 Beth n Rod reacted to this Share this post Link to post Share on other sites
0 MidwestMaintenancellc 14 Report post Posted June 11, 2014 F 9 works Great On metallic Stains Sent from my SAMSUNG-SM-N900A using Tapatalk Share this post Link to post Share on other sites
0 tigerwash 14 Report post Posted June 15, 2014 maybe try F9 Share this post Link to post Share on other sites
0 ROOFCLEANINGPROS 0 Report post Posted February 9, 2015 I Used F 9 http://www.rofcleaningpros.net Share this post Link to post Share on other sites
0 Beth n Rod 1,279 Report post Posted February 15, 2015 I would suggest you look into this companies product line. They are specifically designed for the task. http://www.diedrichtechnologies.com/ Rod Share this post Link to post Share on other sites
The roof is made of black copper
and there are streaks of black going on to the walls which is limestone. Any idea on how to remove such stain?
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