How do i clean copper overhangs on roof? Home › Forums › Archives › Old Bulletin Board Archives › How do i clean copper overhangs on roof? This topic has 0 replies, 1 voice, and was last updated 21 years, 3 months ago by michae;l patten. Viewing 0 reply threads Author Posts 18 Oct 1999 at 12:44 am #284920 michae;l patten I have copper overhangs on roof that I would like to restore their luster. Anyone has any ideas? Tried tarnex, didnt work. Author Posts Viewing 0 reply threads The forum ‘Old Bulletin Board Archives’ is closed to new topics and replies.