Snap lock standing seams should not be used on roofs under 1 5 or 2 12.
Flat lock copper roof.
Copper cleats of 16 or 20 oz.
Two adjacent sides of the sheets are folded over and two are folded under to form 3 4 locks.
These panels are ideal for flat roofs domes turrets and any wall panel system interior or exterior.
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.
One long term solution is a flat lock soldered copper roof.
Flat lock soldered copper roofing.
Horizontal flat lock systems.
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.
Metal clips and nails for fastening the panels are available.
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.
On a roof the locks are hammered tight and always soldered.
Installation is done via using clips to secure the panels down to a roof or wall.
Pre tinning of edges is also available.
For a roof pitch less than 3 12 a solid membrane roof of some sort is needed.
Copper flat lock soldered roof panel system.
Flat lock roofing panels come in a variety of shapes sizes and metals.
This type of wall panel is basically identical to flat seam roofing applied on a vertical surface.
Cold rolled copper are installed in each of the longitudinal and transverse seams.
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.
Flat lock soldered copper roofing is excellent on low slope roofs where a long lasting durable roof is desired.
Thanks for your questions.
One long side and one short side are bent upward approximately 160 degrees to form a 3 4 fold.
Flat seam roofing is constructed of 18 by 24 20 oz.
The flat lock panel also makes a wonderful industrial looking wall panel.
The flat lock roof starts with a drip edge piece see illustration below.
Rectangular cold rolled copper sheets.
Flat lock panels always need to be soldered on flat roofs.
However neither solder nor sealant is required in the joints since the vertical surface provides positive drainage.
