Dock Doors, Rolling Steel and Downtime in Joliet

A rolling steel door coils a slat curtain into a barrel above the opening, with its counterbalance spring inside that barrel. The faults look nothing like a sectional door's: slats bowed after an impact, the curtain walking to one side in the guides, a bottom bar out of level, tension lost inside the barrel. None of it is put right with sectional parts.

Fire-rated doors carry an extra obligation. They are held open by a release that has to let the curtain down when the fusible link goes or the alarm system calls for it, and that release needs dropping, resetting and recording on a schedule. Where an opening in your building carries a fire rating, it is worth knowing which one it is and when anybody last dropped it.

The most common commercial call in a busy building is a door that got hit. Forklifts, box trucks reversing onto a tight apron, pallets stacked against a guide. We straighten or replace what took the damage, but the useful part of the visit is working out what let it happen: worn photo-eyes, an operator with no reversing edge on the bottom bar, missing bollards, or a door so slow that people drive at it before it is clear.

Emergency attendance is available where an opening leaves a building unsecured or a bay out of use. If a part is not on the truck, the aim is to get the opening safe and closable on that visit and finish it on the return.