Very Active Signmaker
Normally I panel vertical, but on corrugated metal buildings, vertical can be tricky because there is very little room on the ridges. When I do horizontal, I came up with an easy trick to line the panels up in seconds. I use a metal bracket and fasten it to the top of the bottom panel where I would normally pop a screw in anyway. It creates a little pocket for the top panel to slide in and sit right on top of the bottom panel. It also keeps it in place until I can get some screws in. This also works on 8'x8' real estate / construction site signs.