We have had the pleasure of working with Revere Copper to determine which soldering flux and lead-free solder were best suited for running long seams on roofing panels. This job requires a solder and flux combination that pulls solder all the way through the joint, yet leaves little or no corrosive residues behind to be of concern later. A consensus was reached after tests showed Johnson's #497 Lead-free Solder, used with Johnson's E-127 Flux-'N-Solder with Pure Tin, enabled mechanics skilled in the art of soldering to perform this task quite successfully. Additional products and panels were then sent to several professional shops for soldering, and we were even more amazed at the results that came back.

E-127 Flux`N`Solder
#497 Solder
Soldering Coppers
Duplex Soldering Iron