Copper Flat-Lock Soldered Roof Panel System

Here is a series of photos showing the details of the copper flat-lock roof panel system, also known as flat seam copper roofing. Panels typically measure 18" x 24" nominal size. One long side and one short side are bent upward approximately 160 degrees to form a 3/4" fold. The remaining two sides are bent in the same manner, but are folded downward instead of upward.

Eaves and rakes are fitted with custom fabricated style "T" drip edge, onto which the panels are crimped. Valley installation is performed with a V-shaped valley pan (or W-shaped if you prefer), usually 18" wide, with 3/4" folded edges, similar to the panels. All components are fastened in place by the use of clips that have an extra tab, which is folded over the heads of the copper nails or stainless steel screws used to attach them.

As installation progresses, the panels are hammered down flat, first with a rubber mallet, and then with a dead-blow hammer. This allows the seams to lay as flat as possible, in preparation for the soldering phase.

Walls are flashed in a manner similar to that utilized with copper standing seam roofing. A copper wall flashing is fabricated and attached to the top or side row of the flat seam roof panels, and also attached to the wall. In the case of a masonry wall, such as brick, stone, or concrete, counter flashing is also fabricated and installed. To do this, a groove is cut into the masonry wall, that groove is then filled with a high-quality sealant, the flashing is inserted, and a final bead of sealant is applied.

We perform both the fabrication and installation phases of the soldered copper flat lock roof panel system (and everything else listed on this web site), but we can also perform only the fabrication phase, if you desire.


Custom Copper Saddle On Copper Flat-Lock Roof


Copper flat lock roof fastening detail.


Flat lock copper roof with stepped counter flashing.


Copper flat lock roof with small custom copper soil pipe.


Soldered Copper Flat Lock Roof.


Copper flat lock roof with straight copper counter flashing.


Copper flat lock roof and stepped copper counter flashing.


Copper flat lock roof with custom copper counter flashing.


Copper flat lock roof with stepped copper flashing and copper valley.


Copper flat lock roof with view of head wall flashing.