A Seasonal Check for a Metal Gate
Operate It by Hand First
Disengage any operator and swing the gate slowly through its full travel. This is the most informative thing in the whole check. A gate should move evenly, hold position anywhere in the arc, and close without needing to be lifted. Heaviness at one point, a change in effort, or a leaf that wants to drift open or closed all indicate something specific and are far easier to notice by hand than through a motor.
Look at Edges, Welds and the Bottom Rail
Coating failures start where the coating was thinnest, which is at sharp edges, at welds, and anywhere the metal was cut. The bottom rail deserves particular attention because it is the lowest and wettest part of the gate and the part nobody looks at. A breach found as a blister or a rust bloom is a ten minute job. The same breach found a year later has undercut the surrounding coating and is a panel repair.
Hinges, Rollers and Fasteners
Check hinge pins for side play by pushing the leaf toward and away from the post. Any noticeable movement is wear. On a sliding gate, look at the roller assemblies and the track for debris and for the bright metal that indicates something is running where it should not. Go round visible fasteners and check that none have backed off or corroded to the point of being unable to be tightened.
Safety Devices Are Not Optional to Check
On an automated gate, test that photocells actually stop the gate by interrupting the beam during a cycle, and confirm the manual release works and that somebody in the household knows where the key is. These devices fail quietly and the gate keeps operating normally, so the only way to know their state is to deliberately test them.
Wash the Salt Off
On a coastal site, rinsing the gate with fresh water and drying the hardware removes accumulated salt that would otherwise sit on the surface working continuously. It sounds trivial. It measurably extends the life of both the coating and the hardware, and it takes a few minutes with a hose.