Which Aluminum Signs Material Thickness Is Best For Custom Building Signage?
When buying custom aluminum signs to mount to a building, you can use .040″ gauge aluminum for signs up to 2′ x 4′ in size. Technically, you can use .040″ gauge aluminum for sizes all the way up to 4′ x 10′ provided you mount the metal flat against the a wall with enough screws. The larger the sign panel size though, the greater the tendency to bend. As a result, large thin gauge aluminum signs can have a wavy or rippled appearance when installed, especially on a corrugated metal building. Therefore, when you want a bigger building sign, we recommend increasingly thicker gauges of aluminum with the optimum heavy duty thickness being .080″ gauge aluminum. The next thickness down is .063″ medium duty thickness. On smaller size signs (up to 2′ x 4′) even a modest increase to .063″ gauge aluminum substantially increases the stiffness, appearance and rigidity of the metal sign panel.
