Copper is one of the most easily solder able metal available.
How to solder copper roofing.
Chris paulin and liam tower demonstrate copper soldering techniques at the 2011 slate roofing contractors association conference in lancaster pa.
It may help to pre tin the sheet edges to facilitate soldering.
Use an electric iron for vertical joints we use a 550 watt american beauty soldering iron w chisel tip for soldering our vertical joints.
Generally ruby fluid works fine for new copper soldering but if you are having issues try a flux specifically made for copper.
Dipping a heated copper soldering tip while in use into a 1 2 mix of water and 1 2 ruby fluid is a good way to remove any debris from the tip which causes dirty joints.
Picture taken out copper and common sense by revere.
Flat lock soldered copper roofing is excellent on low slope roofs where a long lasting durable roof is desired.
If you hold the iron perpendicular to the joint press the tip into the seam and work from top to bottom the joint can be soldered beautifully in one pass.