Count cycles, not years
A residential door might see three or four cycles a day. A busy shop door can see fifty. Standard springs are rated around ten thousand cycles. Do that math and the maintenance schedule writes itself.
Specify high-cycle springs
If the door runs constantly, high-cycle springs rated for far more openings cost more up front and dramatically reduce unplanned downtime. On a door that stops your operation when it fails, that trade is usually easy.
Watch the bottom section
Forklift and cart contact at the bottom of the door is the most common damage we see. Bollards and impact guards are cheaper than repeated section replacement.
Keep the photo eyes and loop detectors clean
Dust, exhaust film and vibration knock commercial sensors out of alignment faster than residential ones. A nuisance reversal that people work around is a fault waiting to become an outage.
Schedule around your hours
Planned maintenance before opening or after close costs a fraction of an emergency call during a shift, and it does not stop your work.
Log what fails
If the same component fails repeatedly, the answer is usually a spec problem rather than a parts problem. That is worth a conversation rather than another replacement.
When to hand it over
If any of this points at springs, cables or a door that has gone out of balance, that is the point to stop. Supreme Garage Doors Repair Services covers commercial garage door repair and every other garage door service across New Hampshire, with same-day slots most days and a line answered 24 hours at (888) 904-6236.