Commercial
Commercial Garage Door Service
When a commercial door is down, your operation stops. G Brothers installs, repairs, and maintains rolling steel, sectional, high-cycle, and fire-rated doors for warehouses, storefronts, and loading docks, with 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.
Rolling steel and sectional doors
Repair and installation for warehouses, storefronts, and docks, including high-cycle and high-lift configurations.
Fire-rated and code-compliant doors
Fire-door service and drop testing to keep your building compliant.
Scheduled maintenance plans
Planned service that prevents downtime on doors that cycle all day.
Commercial work we handle
Emergency repair on a door that is stuck open or closed
Rolling steel curtain, spring, and barrel service
Dock levelers, security, and oversized custom installs
Fire-door drop testing and code compliance
How it works
- 1
Call or book online
Tell us the symptom and your door. We schedule a same-day or next-day visit at no charge to look.
- 2
On-site diagnosis and flat quote
Your technician finds the real cause and gives you a flat price to approve before any work begins.
- 3
Fixed and tested
We complete the work, cycle and balance the door, and leave it running safely and quietly.
Why homeowners call G Brothers
Voted Best Garage Door Company, three years running
And rated 4.9 stars across 400+ Google reviews.
More than 40 years of experience
Family-owned, locally operated, and BBB accredited.
Free, no-obligation estimates
We look, diagnose, and quote a flat price you approve before any work starts.
Same-day and 24/7 emergency service
Most repairs are handled the day you call.
Background-checked, licensed, and insured technicians
Local crews you can trust in your home.
No pressure, done right the first time
We recommend a repair over a replacement whenever that is the right call, and back it with a workmanship guarantee.
Reviews
Rated 4.9 across 400+ Google reviews
Homeowners and businesses trust G Brothers for fast, honest garage door work.
Based on 400+ Google reviews
Upfront, flat-rate pricing
Your estimate is free. We diagnose the problem on site, then give you one flat price to approve before any work begins. No surprises, no pressure, and an honest recommendation on whether a repair or a replacement is the better value.

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
12550 W Colfax Ave, Unit 107, Lakewood, CO 80215
Open 24/7 for emergency garage door service.
Related questions
Quick answers about commercial doors and related work from the G Brothers team.
How 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 answerHow fast must a commercial fire door close to pass a drop test?
Under NFPA 80, a fire-rated rolling steel door must close at 6 to 24 inches per second during a drop test.
Read full answerRelated services
Service areas
Commercial Doors across the Denver metro
G Brothers brings commercial doors to homes and businesses throughout the Denver metro. Find your city below.
Ready to get started?
Book same-day service or a free estimate. Available 24/7.
Learn more
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






