Roll up doors
Roll Up and Rolling Steel Door Repair
A rolling steel door coils its slat curtain around a barrel above the opening, and most failures come from the springs inside that barrel, the curtain or the guides. G Brothers repairs roll up doors on storefronts, warehouses and loading docks across the Denver metro, 24/7, with common parts on the truck.
What this service covers
Real work by background-checked local technicians, quoted at a flat rate you approve before anything begins.
Springs and tension
Barrel spring repair and re-tensioning, so the curtain lifts evenly and stays where you leave it.
Curtain and slats
Bent, torn or separated slats replaced, and curtains that bind in the coil straightened out.
Bottom bar and seal
Damaged bottom bars and worn bottom seals replaced, so the door closes square and seals at the floor.
Guides
Bent or knocked guides straightened or replaced, so the curtain runs without rubbing or jumping out.
Barrel and hood
Barrel bearings, brackets and the hood over the coil.
Hoists and operators
Hoist operators and chain hoists repaired, on any brand.
Fire-rated rolling doors
Service and repair on the curtain, barrel and bottom bar.
Common roll up door problems
The door is stuck partway or will not go up.
The curtain drops fast or will not stay open, because the spring tension is off or a spring has broken.
Slats bulge, catch or come out of the guides after a hit.
The door rubs, screeches or shakes as it coils.
The bottom bar is bent and light shows under the closed door.
The chain hoist is hard to pull or slips.
Before the technician arrives
If the door is stuck partway, keep people and vehicles out from under it, and do not force the curtain or try to adjust the springs. A rolling door's springs hold a lot of tension inside the barrel. When you call, tell us the door's width, whether it runs on an operator or a chain hoist, and what happened just before it stopped, so the technician brings the right parts.
Roll up door repair questions
Can you flatten a warped door? Sometimes. A slat that is dented but still interlocks can stay, while slats kinked enough to jam the coil or the guides should be replaced. Straightening a whole curtain rarely holds, so we replace the damaged slats and keep the rest.
How to frame a roll up door? The guides mount to the jambs and the barrel brackets to the wall above the opening, so the jambs and header have to be solid steel, block or framing that carries the door's weight and wind load. We check the mounting on every repair and tell you if it is part of the problem.
How much does it cost to repair sliding door rollers? A roll up door has no rollers to repair: a rollup door's curtain rides in guides, so wear shows up in the guides, the barrel bearings and the springs instead, and you get a flat price for that work after a free look. Door alignment in the guides is one of the first things we check on a door under constant use.
When does a roll up door need professional repair? Any time the springs, the barrel or a door stuck partway are involved. The spring tension can injure someone, so leave those to a technician and call us instead.
How it works
- 1
Call or book online
Tell us the door, what it is doing, and how many times a day it runs. Emergencies are dispatched around the clock.
- 2
On-site diagnosis and flat quote
Your technician finds the real cause and gives you one flat price to approve before any work begins.
- 3
Fixed, cycled and tested
We complete the work, balance the door, test the operator and safety devices, and run the door through full cycles before we leave.
Why facility managers call G Brothers
Fast response, day or night
Our average response is about an hour and a half, and that holds for a commercial call at 2am.
Parts on the truck
Common springs, cables, rollers and operator parts are stocked on the truck, so many repairs are finished on the first visit.
Every operator, every brand
Jackshaft, trolley, hoist and gate operators on any make, so we repair the equipment you already have.
Insured, with paperwork fast
Licensed, insured, background-checked technicians, with a certificate of insurance usually sent within 24 hours.
One account for every property
Property managers can put every door on every building on one account.
Warranty on the work
One year on labor and three years on parts.
More than 40 years in the trade
Family-owned, BBB accredited, and rated 4.9 stars across 400+ Google reviews.
Reviews
Rated 4.9 across 400+ Google reviews
Property managers, contractors and homeowners trust G Brothers for fast, honest garage door work.
Based on 400+ Google reviews
Upfront, flat-rate pricing
Your estimate is free. We look at the door on site, then give you one flat price to approve before any work begins, with an honest recommendation on whether a repair or a replacement is the better value for a door that has to keep working.
Visit us
Find G Brothers Garage Doors
Reach out for same-day garage door service. Our technicians come to you for every repair, replacement, and install.
Our shop
7700 W 9th Ave, Lakewood, CO 80214
Open 24/7 for emergency garage door service.
Related questions
Quick answers about rolling steel door repair and related work from the G Brothers team.
Do you repair rolling steel doors?
Yes, we handle rolling steel door repair across Denver: jammed curtains, broken barrel springs, worn guides, bottom bars, and operator faults.
Read full answerWhat are the most common problems with roll-up commercial garage doors?
The five most common problems are: coil drum wear, bottom bar damage, spring failure, operator motor failure, and guide rail damage.
Read full answerDoes a rolling steel commercial door require ceiling clearance?
A rolling steel door needs minimal headroom because the curtain coils into a compact drum directly above the opening.
Read full answerWhat are high-cycle garage door springs?
High-cycle garage door springs are heavy-duty torsion springs rated for far more cycles, sized for busy commercial doors that fail standard springs.
Read full answerWhat is a commercial overhead door?
A commercial overhead door opens upward and stores overhead. Here are the main types, how they work, and how to pick the right one for your bay.
Read full answerService areas
Rolling Steel Door Repair across the Denver metro
We provide roll up and rolling steel door repair across the Denver metro, including Denver, Lakewood, Aurora, Commerce City, Arvada, Wheat Ridge, Golden, Englewood, Littleton, Centennial, Westminster, Thornton, and Broomfield, plus surrounding communities. Not sure if you are in range? Call and we will let you know.
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Book same-day service or a free estimate. Available 24/7.
Learn more
Guides & resources
Learn more about rolling steel door repair before you book.
- What Is an Overhead Door? Types, Benefits, and How to ChooseAn overhead door is any door that opens vertically and stores flat against the ceiling when fully open. Most residential garage doors are overhead doors. The type, material, and insulation you choose determine how it performs in Colorado's climate.Read guide
- Overhead Garage Door Repair: Common Issues With Tracks, Rollers, and SpringsMost overhead garage door repair comes down to three parts: the tracks, the rollers, and the springs. Track and roller work is a safe DIY fix. Leave spring repair to a pro because of the high tension involved.Read guide