Warning signs to act on
Keys that stick or need to be jiggled, a latch that fails to catch unless the door is pushed, a deadbolt that drags, or a handle that feels loose are all signs of wear. On aluminum storefront doors, a cylinder that spins in the door or a hook bolt that misses the strike is common and should be repaired before it fails completely.
Common causes on GTA commercial doors
The most frequent causes are door sag from worn hinges or pivots, a closer that slams the door and shocks the lock, debris and road salt in the cylinder, and builder-grade hardware that was never rated for commercial traffic. Fixing the lock without correcting the door often means the same failure returns.
Repair or replace
Many issues can be fixed by adjusting the strike, servicing the cylinder, replacing worn springs or cams, or adjusting the closer. Replacement makes sense when the lock body is cracked, parts are no longer available, or you want to move to Grade 1 commercial hardware or a restricted keyway.
Keep exit doors compliant
Exit doors must allow people to leave quickly without a key or special knowledge. Never add a padlock, chain, or secondary deadbolt to an exit door to stop a lock problem. A qualified locksmith can repair or upgrade the hardware while keeping the exit working properly.
Schedule routine maintenance
A twice-yearly check of locks, closers, hinges, and exit devices, ideally before and after winter, catches most problems early. For multi-unit properties and plazas, a written log of each opening makes it easier to plan replacements across budgets.