Commercial Roll-Up & Rolling-Steel Door Repair in Denver, CO
For commercial roll-up and rolling-steel door repair in Denver, CO, call (385) 325-7138 about a curtain that jammed, bent guides, damaged slats, or a coiling door that will not come down. Tell us the facility location and which opening it is.
Call and describe the door.
Call to describe the problem—if the door is stuck open or the dock is down, say so first.
Independent service-request website. Calls may be shared with an independent commercial dock-and-door repair company. That provider confirms availability, scope, pricing, and service terms.
Facts checked: September 18, 2026.
First question: is yours rated?
This is the one thing worth sorting out before you book anything, because a rated door and an ordinary door get different work, different technicians, and different paperwork.
A coiling door is one continuous curtain — interlocking steel slats, a sheet of formed steel, or a grille — that wraps around a barrel above the opening. No hinged panels, no tracks running back into the ceiling.
A rated rolling fire door looks similar from below but is a listed assembly designed to close by itself in a fire. Tells that it might be rated:
- A metal label on the guide, the hood, or the bottom bar with a listing mark and a rating in hours.
- A fusible link — a small metal link in a cable near the hood or guide, designed to melt and release the door.
- A release device, governor, or drop-test tag on the hood.
- Its position: rated rolling doors usually sit in a fire-rated wall separating occupancies or areas, not on an exterior dock face.
Do not test it to find out. Do not pull the link, trip the release, or cycle it to see what happens. If any of those tells are present, or you just are not sure, go to rolling fire door repair, testing and reset — or say on the call that you think it might be rated and let the provider settle it.
Everything else on this page is about non-rated commercial coiling doors.
What a provider will look at
| What you are seeing | What a qualified provider would inspect | Why it matters |
|---|---|---|
| Curtain jammed part way | Guides, slats, barrel, counterbalance, obstruction | Forcing it usually turns a repair into a replacement |
| Slats bent or torn after an impact | Curtain condition, guides, bottom bar, and squareness | Slat replacement depends on profile and availability |
| Guide bent or pulled away from the wall | Guides, fasteners, wall condition, curtain alignment | A bent guide will keep damaging the curtain |
| Door crashed down or came out of the guides | Counterbalance, curtain, guides, and the whole assembly | Treat as unsafe and keep people clear |
| Chain hoist will not turn or slips | Hoist, chain, reduction, barrel connection | Hand-chain doors fail differently than motorized |
| Motor runs, curtain does not move | Operator, drive connection, barrel, curtain | Motor noise does not prove a motor fault |
| Bottom bar damaged or sensing edge not working | Bottom bar, safety edge, controls | Safety devices are not bypassed to keep it running |
| Curtain is very heavy to lift by hand | Counterbalance spring inside the barrel | Do not keep lifting it. That is a spring question. |
A coiling door's counterbalance lives inside the barrel, under tension. It is not user-serviceable and it is not something to "have a look at." If a door has become hard to move or dropped unexpectedly, stop using the opening and keep people clear.
When the opening is stuck open
Say it first if the building is exposed, if security is affected, or if the door is stuck across a dock position.
Then: do not force the curtain, do not pry the guides, and do not use a forklift to push or lift the door. Do not disconnect a hoist or operator to "let it down." Follow your facility's existing process for securing the opening and taking that bay out of use — without approaching or manipulating the door.
The call details may be shared with an independent commercial dock-and-door repair company. That provider confirms availability and scheduling. We do not dispatch or promise a response time.
Tell us what is open and where.
Curtain types, in plain words
- Rolling steel / slat curtain — interlocking steel slats. The most common warehouse and dock coiling door.
- Sheet door — a single formed sheet of steel instead of slats. Common on self-storage and lighter commercial openings.
- Rolling grille — an open lattice curtain used where you want to close an opening but still see through it.
- Counter shutter — a small coiling door over a counter or service window. Some are rated; see the section above.
- Insulated slat — slats with a foam core, used where temperature matters.
Profile matters when slats need replacing. If a curtain is old or was a custom profile, availability is usually where the lead time comes from.
What we cover on this page — and what we don't
In scope: non-rated commercial rolling steel, coiling, sheet, grille, and counter doors at warehouses, plants, shops, self-storage, and other commercial buildings. Curtains, slats, guides, barrels, counterbalance, bottom bars, hoists, operators, and door controls.
Not in scope: sectional doors with hinged panels (overhead). Rated rolling fire doors (fire door). High-speed fabric and rigid doors (high-speed). Residential. Truck and trailer cargo doors. Pedestrian storefront, automatic-entry, glass and hollow-metal doors with locks and closers. Parts-only supply. Structural, concrete, and masonry work around the opening.
What to say when you call
- You call and describe the door and the facility location.
- Your request may be shared with an independent commercial dock-and-door repair company.
- That provider confirms availability, scheduling, pricing, and its own service terms.
Example wording — an example, not a real job:
"The roll-up door on our Denver shop is jammed halfway and won't come down. I can give you the address."
Useful, but not required: which opening, roughly how wide it is, whether it is chain-operated or motorized, whether you think it is rated, and any label you can read safely from where you stand. You can call without a model number, a measurement, a photo, or a diagnosis — and without walking up to a jammed curtain.
If you reach voicemail, leave the facility address, the door or dock number if known, what's wrong, and a callback number.
What affects the price
We can't quote your exact repair from a web page. The price depends on the equipment, the fault, parts, and access. Here's what to ask before you authorize work.
- How much of the curtain is damaged. A few slats is a different job from a curtain replacement.
- Slat profile and availability. Older or custom profiles are where the lead time shows up. Ask whether the profile is still made.
- Guides and mounting. Bent guides or pulled fasteners can mean wall repair is in or out of the quote — ask which.
- Counterbalance work. Barrel and spring work is specialized labor.
- Hand chain versus motor. Motorized doors add operator and control scope.
- Opening size and height. Access equipment may be needed.
- Whether the opening is still true. An impact that moved the jamb is a bigger scope.
- Which kind of number it is — diagnostic fee, starting price, scoped fixed price, estimate, or final quote. The breakdown is on the Denver hub page.
If you are weighing a coiling door against a sectional for a replacement, the national rolling steel door versus sectional door reference covers the trade-offs.
Get it described and let the provider price it.
The Denver rules that matter for coiling doors
Denver's contractor licensing policy lists a Class D specialty for overhead doors — installation and repair of operable commercial overhead doors and, separately, one for fire doors — to install and repair fire doors. Those are two different categories. If your door turns out to be rated, the classification question changes, and so does who is allowed to do the work. (Denver Contractor Licensing, checked September 18, 2026.)
Denver also does not reciprocate licenses from other counties or states. Ask where the company is licensed and match it to where your building sits, by parcel.
On permits: a curtain or guide repair and a full door replacement are not the same question, and only the office with jurisdiction can answer it for your opening. Inside Denver, ask Denver Community Planning and Development. Everywhere else, the Denver service area page lists which city or county covers each town. The absence of permit guidance here does not mean a permit is not required. The provider and the issuing office confirm.
Where we take calls
Denver, Aurora, Commerce City, Thornton, Englewood and the rest of the ten-county metro, plus the towns just past those county lines, reviewed case by case. The independent provider confirms your facility address and whether it can take the job. Full list on the Denver service area page.
See also the national commercial roll-up and rolling-steel door repair overview.
Questions about roll-up door repair in Denver
Can a few bent slats be replaced without redoing the whole curtain?
Often yes — that is one of the advantages of a slat curtain. It depends on whether the profile is still available and whether the guides and barrel came through the impact. Ask for the slat profile to be identified in the quote.
The door is really heavy to lift by hand now. Is that normal?
No. A coiling door should be balanced so it moves with reasonable effort. Heavy usually means the counterbalance inside the barrel needs attention. Stop lifting it and stop using the opening.
How do I tell a roll-up door from a sectional door?
A roll-up has one continuous curtain that coils around a barrel above the opening. A sectional is made of hinged panels that run back into the ceiling on tracks. If you can see panel hinges, it is sectional — go to the overhead door page.
Is a self-storage sheet door covered?
Yes, if it is a commercial facility. Sheet doors are lighter than slat curtains and fail a bit differently — bent bottom bars, creased sheets, and guide damage are common. Say how many openings are affected.
Call about the roll-up door
Give us the facility location and which opening it is. If it is stuck open, say that first.
Independent service-request website. Calls may be shared with an independent commercial dock-and-door repair company. That provider confirms availability, scope, pricing, and service terms.
Denver dock and door repair · All Denver services · Service area · Contact · Change service area
Sources
- Denver Community Planning and Development — Contractor Licensing — overhead door and fire door specialty categories, reciprocity statement. Checked September 18, 2026.