Commercial installation

Commercial Garage Door Installation

Commercial garage door installation is as much about the opening as the door. G Brothers installs commercial sectional, insulated and rolling steel doors across the Denver metro, built for more use than a home door, with the track, springs and operator chosen for how the door will be used.

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22: commercial door installs in our records since 2018
57: commercial operator jobs since 2018
12: of those operators went in with a new door

Counted from G Brothers’ own Housecall Pro job records, 2018 to 2026.

What this service covers

Real work by background-checked local technicians, quoted at a flat rate you approve before anything begins.

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New commercial doors
Sectional overhead doors in steel and insulated steel, in sizes like 10x10, 12x14 and 14x14, and rolling steel doors.
Opening work
Block walls cut and framed, with back-jambs, so the door fits the opening it has to close.
Track for the room you have
Standard, high lift and low headroom track, chosen from the headroom and what hangs from the ceiling.
Springs rated for the use
Springs sized to the door's weight and how many times a day it runs, with high-cycle springs on doors that work all day.
The operator fitted
A jackshaft, trolley or hoist operator installed with the door, with photo-eyes and a wall station.

What to decide before a new commercial door

The opening. Width, height, the headroom above it and the side room on each jamb.
The wall. Block, framed or steel, and whether the opening needs cutting or framing.
How hard it works. How many times a day the door runs, which sets the spring rating.
Insulation. Insulated sections for a heated bay, shop or office.
Door type. Sectional for most bays, rolling steel where the ceiling has no room for track.
How it opens. An operator, a chain hoist, or both.

Recent commercial installs

Aurora. A 10x10 steel overhead door, installed.
Denver metro. A 12x11'6 insulated door with small glass and 9 inches of headroom, installed on 12-foot low headroom track with the torsion bar changed.
West metro. An old 10-foot-wide, 14-foot-tall door at a small commercial space, booked to be replaced with an insulated door.
Denver metro. An insulated commercial sectional door quoted with the opening cut out of a block wall, framed and back-jambed.

Site preparation

Before install day the opening has to be ready: a sound wall and header around it, a level floor where the door seals, power where the operator will go, and clear room above and beside the opening for the track or a rolling door's coil. We check all of it on the site visit and tell you what needs doing, including any block cutting or framing, which we handle as part of the job.

Security features

Steel construction. Steel sections or a rolling steel curtain close the opening against forced entry, and insulated steel keeps a heated bay warm.
Locks on manual doors. Slide locks or a keyed lock for doors run by hand or by chain hoist.
Controls inside the building. Wall stations mounted inside, so the door runs only from where it should.
Rolling steel for storefronts. A rolling curtain closes over a shop front at night and coils out of sight by day.

Common questions about commercial installs

How long does a commercial garage door installation take? It depends on the opening. A door going into a ready opening is a far shorter job than one where the wall has to be cut and framed first, so we set the schedule with your quote after the site visit.
Are there building codes for commercial garage doors? Yes. A new commercial door can need a permit, and fire separation, wind load and life-safety rules can decide which door the opening needs. Check with your city's building department, and we size the door to what the permit and the inspector require.
How much does a commercial garage door cost to install? It depends on the size, the door type, insulation, the operator and the opening work. The estimate is free, and you get one flat price after we measure.
Can I install a commercial garage door opener myself? We advise against it. The springs and operator on a commercial door carry heavy loads, and the safety devices have to be set and tested, so it is a job for a trained technician.

How it works

1
Call or book online
Tell us the opening size, the wall, the headroom and how often the door will run.
2
Site visit and flat quote
We measure the opening and the room around it, recommend the door, track and operator, and give you one flat price to approve.
3
Installed and tested
We install the door and operator, set the springs, limits and safety devices, and run the door through full cycles.

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.

4.9

Based on 400+ Google reviews

Read reviews Leave a review

We had a great experience with this garage door company! They responded quickly and came out right away to fix our garage door. The service was fast, professional, and very affordable. Everything is working perfectly now, and we really appreciate how easy they made the whole process. We would definitely use them again in the future and highly recommend them to anyone needing garage door repairs!

Sara F.

Google review • Jun 2026

After putting off a broken garage spring for over a year, I finally called G Brothers Garage Doors. I only wish I had done it sooner. I found them on social media and got an immediate response. Scheduling was easy, and Boddrick showed up exactly when he said he would at 8:45 AM. He took one look at the issue and confidently said he could fix it and had the springs in the truck. He replaced both springs quickly for the exact quoted price with no surprises. While testing the door, he noticed noise in the rails and took the time to tune everything up as well. Professional, knowledgeable, efficient, and honest. The kind of service that is hard to find these days. If you need garage door work done right the first time, call G Brothers. No question. Highly Recommend!

David B.

Google review • Apr 2026

G Brothers came to check out our garage door issue within a half an hour of calling them. They turned around a quote within that same day and I was able to schedule my garage door opener replacement within 48 hours. This was much faster than I expected (my issue wasn’t an emergency). The garage door works much better now than I knew it could (older garage door). I highly recommend working with G Brothers! And will certainly be going back to them with any future garage door needs.

Kate H.

Google review • Apr 2026

I highly recommend this company. They did a great job! I needed a new 2-door and single door garage door and they came the very next day, did a great job, and were the best experience. I've had at least 3 companies come out and do work on my garage doors over the past 10 years and wouldn't use any of them again. I will be using G Brothers again and again, they did great work at the price they quoted. They were on time, did the work quickly, and it looks and works great!

Jay D.

Google review • Oct 2025

So grateful for these guys, they helped me out so quickly and at a great price! When my old door jammed up and got crunched they were the only ones who could within a day fix it and they work so fast it only took them an hour and a half to install a completely new door and springs, great work ethic and super nice guys! Other companies told me it would be weeks till they could get a new door and wanted to charge me thousands more, I would highly recommend these guys to anyone!

Everett M.

Google review • Sep 2024

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.

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A G Brothers technician servicing a residential garage door

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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.

Get directions Call (720) 421-6489

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Commercial Garage Door Installation across the Denver metro

We provide commercial garage door installation 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.