Commercial
Commercial Garage Doors in Denver
When a commercial door is down, your operation stops. G Brothers is a commercial garage door company serving Denver and the Denver metro, with repair, installation and planned maintenance on rolling steel, sectional, high-cycle and fire-rated doors for warehouses, storefronts and loading docks, and 24/7 emergency dispatch to get you running again.
- Same-day service
- 4.9 stars, 400+ reviews
- Licensed & insured
What this service covers
Real work by background-checked local technicians, quoted at a flat rate you approve before anything begins.
Commercial door repair
Springs, cables, track, sections and operators on any commercial door, around the clock.
Commercial door installation
Sectional, insulated and rolling steel doors sized to the opening, with the operator fitted.
Rolling steel and roll up doors
Curtain, slat, spring, guide and bottom bar repair on storefront, warehouse and dock doors.
Security grilles and counter shutters
Rolling security grille repair and installation, manual and motorized.
Loading dock doors
Impact damage, high-cycle springs and operators on the doors at your dock.
Dock levelers, seals and bumpers
Dock leveler repair on mechanical, hydraulic and air-powered levelers, with worn dock seals and bumpers replaced.
High-speed doors
High-speed door repair and installation: fabric curtains, bottom bars, controls and sensors.
Commercial operators
Jackshaft, trolley, hoist and gate operators installed and repaired on any brand.
Planned maintenance
Scheduled service that prevents downtime on doors that cycle all day.
Situations we fix every week
- Commercial door won’t run on its operator?When a business door stops, it is usually the operator, the springs, or both. Operators are the most common thing in our commercial job records, and we repair or replace trolley, jackshaft and hoist units.How we fix it
- Replacing the overhead door at your shop, warehouse or commercial space?A commercial door is sized and built for more use than a home door. Tell us the opening, the headroom and how often it cycles, and we will quote a door that fits.How we fix it
Commercial work we handle
Emergency repair on a door that is stuck open or closed
Rolling steel curtain, spring and barrel service
Service and repair on fire-rated rolling doors
High-cycle springs for doors that run all shift
Oversized commercial doors and custom openings
Slide and swing gate operators on yards and lots
Commercial openers and operators
We install and service every commercial operator type, on any brand. That matters on a commercial building, where you usually inherit whatever equipment is already mounted rather than choosing it.
Jackshaft operators. Wall-mounted beside the torsion shaft, so the ceiling stays clear for racking, lighting, and sprinkler lines.
Trolley operators. The overhead rail type, common on sectional doors in smaller bays and shops.
Hoist operators. Built for heavy rolling steel doors and high cycle counts.
Gate operators. Slide and swing gates on yards, lots, and service entrances.
We do not standardize on one manufacturer, so we can repair the unit you already have rather than pushing a replacement line.
Who we work with
Warehouses and distribution. Dock and bay doors that run all day and cannot be down for long.
Storefronts and retail. Roll up doors and shop fronts that have to open on time and lock at night.
Shops and service bays. Sectional doors on auto shops, contractor yards and service buildings.
Property managers. Several buildings, one account, and a certificate of insurance when you need it.
Commercial or residential door?
What is the difference between a commercial and a residential garage door? A commercial door is built for larger openings, heavier sections and far more cycles a day, so its springs, track and operator are rated for that use, and many are rolling steel rather than sectional. We work on residential garage doors too, so one call covers the house and the shop.
Who makes the best commercial garage doors? The best door is the one rated for your opening and your cycle count. We do not standardize on one manufacturer, so we recommend the door and operator that fit the building rather than one brand line.
Do you work on gate systems? Yes. We install and repair slide and swing gate operators on yards, lots and service entrances, on any brand.
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.
Common questions
Quick answers about commercial doors and related work from the G Brothers team.
Do you offer 24/7 emergency commercial service?
Yes. We dispatch around the clock for commercial doors that are stuck or unsafe, because downtime is expensive.
Do you service rolling steel doors?
Yes, including the curtain, springs, barrel, and bottom bar, plus service and repair on fire-rated rolling doors.
Can you set up a maintenance plan?
Yes. Scheduled maintenance on high-cycle doors is the cheapest way to avoid an unplanned shutdown.
Do you work on gate systems?
Yes. We repair and install slide and swing gate openers, keypads, call boxes and barrier arms, and repair the gates themselves. See gate and gate opener repair.
Do you offer commercial garage door services?
Yes, we offer commercial garage door services across the Denver metro: install, repair, fire-rated and custom doors, maintenance plans, and 24/7 emergency.
Read full answerWhy is my rolling counter shutter stuck?
A stuck rolling counter shutter usually has dirty or bent guides, a bent slat or loose endlock, a crooked bottom bar or lock, or springs that lost tension; the spring is a technician's job.
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 answerHow much does a commercial garage door cost?
Commercial garage doors cost $1,000 to $10,000 or more installed, depending on type and size.
Read full answerHow do I prevent commercial garage door downtime and keep operations running?
Schedule preventive maintenance every 3 to 6 months depending on cycle count, inspect safety devices monthly, and keep a spare parts kit on site for common wear items.
Read full answerWhat are fire-rated commercial doors and do I need one?
Fire-rated commercial doors close automatically to slow fire spread at rated walls. Here is how they work and where the building code requires them.
Read full answerSectional vs rolling steel commercial door: which is right for you?
Pick a sectional door for insulation, windows and a quieter door where the ceiling has room for tracks; pick a rolling steel door where space around the opening is tight or security, wind load or a fire rating comes first.
Read full answerRelated services
- Commercial Garage Door Repair
- Commercial Garage Door Spring Repair
- Commercial Garage Door Installation
- Rolling Steel Door Repair
- Rolling Security Grille Repair
- Loading Dock Door Repair
- Dock Leveler Repair
- High-Speed Door Repair
- High-Speed Door Installation
- Commercial Garage Door Maintenance
- Commercial Door Operators
- Gate & Gate Opener Repair
Service areas
Commercial Doors across the Denver metro
We provide commercial garage door service 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.
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Guides & resources
Learn more about commercial doors before you book.
- 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
- 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