Install only as much copper as can be soldered by the end of the day.
How to solder copper roofing.
Lap seams should have a minimum 1 inch overlap and no gaps larger than 1 16 inch.
Picture taken out copper and common sense by revere.
It may help to pre tin the sheet edges to facilitate soldering.
When soldering copper 50 50 lead tin solder is preferable and a multitude of fluxes are available.
Check the slate roof warehouse for tools materials and supplies.
Make your seams tight clean clean and tight seams are essential.
Solder much prefers bright copper with a very close fit.
Generally ruby fluid works fine for new copper soldering but if you are having issues try a flux specifically made for copper.
View the products.
The solder should be 50 50 tin lead solder in either 1 pound or 1 4 pound bars.
Flat lock soldered copper roofing is excellent on low slope roofs where a long lasting durable roof is desired.
Assuming the copper is relatively clean and bright first brush or squirt on the liquid flux hold the hot soldering iron on top of and against the seam then add additional solder when the metal gets hot enough to melt it until the joint is filled.