Dock doors

Loading Dock Door Repair

A dock door takes more hits and more cycles than any other door on the building, and when it fails the trucks stack up. G Brothers repairs the sectional and rolling steel doors at loading docks across the Denver metro, 24/7, with common parts on the truck.

Book Online Call (720) 421-6489

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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Impact damage
Sections, panels and track bent by a forklift or a trailer, straightened or replaced.
Springs and cables
High-cycle springs and lift cables for dock doors that run all shift.
Rolling dock doors
Curtains, slats, guides and bottom bars on roll up dock doors.
Operators
Jackshaft, trolley and hoist operators, with photo-eyes and wall stations, on any brand.
Seals on the door
Bottom seals and weatherstripping on the door itself, so a closed dock door keeps the weather out.

Signs a dock door needs repair

The door is stuck open or closed with a trailer waiting.
Sections are kinked or the door hangs crooked after a hit.
The door has come off its track or out of its guides.
The operator reverses, stalls or will not run.
Light and drafts show under or around the closed door.
A spring or cable has broken and the door will not lift.

Keep the dock running

Dock doors that run all day wear springs, rollers and cables faster than any other door on the building. A scheduled maintenance plan catches that wear on a planned visit instead of in the middle of a shift. If a dock door has been hit, keep people and vehicles clear of it and do not run it until it has been checked. A bent section or track can drop the door.

Dock levelers, seals and industrial doors

A dock leveler is the hinged plate at the dock floor that bridges the gap to a trailer bed. A dock seal or shelter is the padding around the door opening that closes the gap to the trailer. Both work with the industrial door above them, and most docks need the door fully open before the leveler runs. Our work is the door itself: the sectional and rolling steel doors at the dock, their springs, track and operators. If the problem traces to the leveler or the seal, we will tell you on the visit.

Choosing a dock door repair service

Around-the-clock dispatch. A dock door fails on its own schedule, so look for a company that answers at night and on weekends.
Parts on the truck. Common springs, cables, rollers and operator parts on the truck mean fewer return trips.
A flat price first. You should know the price before the work starts, not after.
Paperwork you need. A certificate of insurance for your property manager or landlord, sent quickly.

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.

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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Service areas

Loading Dock Door Repair across the Denver metro

We provide loading dock 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.