Flat Lock Copper Roof

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Flat lock copper roof. Here is a series of photos showing the details of the copper flat lock roof panel system also known as flat seam copper roofing. Two adjacent sides of the sheets are folded over and two are folded under to form 3 4 locks. Rectangular cold rolled copper sheets. Metal clips and nails for fastening the panels are available.
However there are many mechanically seamed standing seams that are very appropriate for lower pitch roofs usually down to about 1 4 12 most flat seam products will have soldered seams to make them watertight even on a flat roof. These panels are ideal for flat roofs domes turrets and any wall panel system interior or exterior. Cold rolled copper are installed in each of the longitudinal and transverse seams. Flat lock panels always need to be soldered on flat roofs.
Panels typically measure 18 x 24 nominal size. They are installed by engaging the lower edge of each panel in the upper edge of the panel below and mechanically attaching the panels to supports using concealed clips located under the upper edges of panels. The field of the roof is then covered with metal pans which can be various standard sizes the most common today is a pan 24 inches x 18 inches. Flat lock soldered copper roofing.
Flat lock soldered copper roofing is excellent on low slope roofs where a long lasting durable roof is desired. Flat lock roofing panels come in a variety of shapes sizes and metals. Pre tinning of edges is also available. Flat seam roofing is constructed of 18 by 24 20 oz.
Snap lock standing seams should not be used on roofs under 1 5 or 2 12. Copper flat lock soldered roof panel system. Flat lock panel is a wall system based on factory formed panels that are custom sized into rectangular square or diamond shapes featuring a formed interlocking welt at all edges. The flat lock panel also makes a wonderful industrial looking wall panel.
On a roof the locks are hammered tight and always soldered. One long term solution is a flat lock soldered copper roof. This can be done using just a few hand tools see list below but the time required can be greatly reduced with the proper sheet metal equipment. For a roof pitch less than 3 12 a solid membrane roof of some sort is needed.
Copper cleats of 16 or 20 oz. One long side and one short side are bent upward approximately 160 degrees to form a 3 4 fold. This type of wall panel is basically identical to flat seam roofing applied on a vertical surface. Horizontal flat lock systems.
The flat lock roof starts with a drip edge piece see illustration below.