Showing the construction of a copper rain gutter built into the eaves and directly attached to a standing seamed main roof. Because the pitch of this gutter is very low, strong flows can result in water that is virtually standing. This gutter depends on sound, strong solder joints to keep it waterproof.
This flatseamed and soldered gutter and outlet is built into the eaves. On left, note the standing seamed copper main roof, attaching to the top of the gutter by a single flat seam. | 
Showing the underlayment of #30 felt, covered with resin paper. The pans are soldered as they are installed, the soldering equipment is shown in the foreground. Note the cleats holding the upper seams in place. Pans are soldered as soon as possible after installation to minimize oxidation which could retard bonding of the solder to the copper. |
Another view of the corner and outlet, this with the main roof uninstalled, showing detail of the upper flatseam and a cleat. | 
Detail of the gutter with main roof installed. Note "lacing" of the solder, for strength. |
Elevation view of the edge of the gutter. |
