How To Seam Copper Sheets

For sheets up to 1 8 in.

How to seam copper sheets.

The backhand method is preferred for thicknesses of 1 4 in. It is arguably the most time proven type of roof panel seam. 3 2 mm thick a plain butt joint with squared edges is preferred. When welding thin sheets the forehand welding method is preferred.

The weld should be started again and continued until the seam weld is completed. This type of seam is used wherever significant movement of the copper sheets is expected. Where lapped or bayonet type expansion provisions in work cannot be used or would not be sufficiently water weatherproof form expansion joints of intermeshing hooked flanges not less than 1. This video describes how to make a double lock standing seam with a seaming anvil and a hammer.

6 4 mm or more. Fabricate nonmoving seams in copper sheet with flat lock seams.