Before & After Gallery - Brock Garage Doors Alpharetta

Garage Door Before & After in Alpharetta, GA

Photos do what promises can’t. A garage door is the largest moving object in most Alpharetta homes, and when it works, nobody notices. When it doesn’t, it’s the first thing you see every time you pull into the driveway. The projects below show real repair scenarios we handle weekly across Alpharetta, Milton, and Roswell: what the problem looked like, what we did about it, and how the door behaved when we left. Each job runs on The Garrison Standard: written price first, clean site when we’re done, and a 365-day guarantee in writing.

Call (229) 404-6747

Recent Transformations

Broken Torsion Spring on a Double Door in Windward

The problem: The homeowner hit the wall button and heard a sound like a gunshot from the garage. The torsion spring, the thick coiled spring mounted above the door that bears most of the lifting load, had snapped clean in two. The door was dead weight, maybe 300 pounds of it, and the opener couldn’t budge it.

What we did: We replaced both springs as a matched pair, not just the broken one. Springs wear together, and a mismatched pair throws the door out of balance, which chews up openers and cables. New springs were rated for the door’s exact weight and cycle count. The tech also reset the opener’s force limits, which had drifted after weeks of compensating for the weakening spring.

The result: The door lifted with one hand when the tech tested the balance. Smooth, quiet, no strain. And because the springs were replaced as a pair, the repair is covered in writing for 365 days. If either spring fails in that window, Wade Mercer sends a tech back at no charge.

Snapped Lift Cable on a Single Door in Crabapple

The problem: A frayed cable finally let go while the door was halfway up. One side of the door dropped about eight inches and jammed against the track. The cable had been worn down by a misaligned drum, something the homeowner couldn’t have seen until it was too late.

What we did: We pulled the old cable, inspected the drum for scoring, and installed new aircraft-grade cable on both sides so the door lifts evenly. The drum was re-seated and lubed, and we checked the door’s balance at three points: fully open, halfway, and closed. The half-open check catches most future cable issues before they strand a door again.

The result: The door tracked straight and lifted square. No grinding, no lurching. Most cable repairs in Alpharetta run $150 to $275 depending on cable type and drum condition. Our tech wrote the exact price on paper and got the homeowner’s signature before he touched the door.

Opener Replacement with LiftMaster Upgrade in Downtown Alpharetta

The problem: A 14-year-old chain-drive opener had given up. The homeowner’s complaints were reasonable enough: it sounded like a washing machine full of rocks, and it randomly reversed for no reason. Rather than pour money into a dying motor, they asked for a recommendation.

What we did: We installed a LiftMaster 8500W wall-mount opener, which freed up the ceiling for storage and cut the noise in half. The old chain drive was removed, the new unit was paired with a battery backup that keeps the door running during Georgia thunderstorm season, and the safety sensors were checked and aligned. The tech was trained on LiftMaster, Chamberlain, Genie, Clopay, Amarr, Wayne Dalton, Craftsman, and Raynor, so he programmed the new opener into the car’s HomeLink on the spot.

The result: The door now glides instead of rumbling. The homeowner can open it from three blocks away with the MyQ app. And the entire job, opener, labor, and programming, was written down and signed off before the first screw came out of the box.

Off-Track Door with Bent Roller on a Rental Property in Haynes Manor

The problem: A tenant had backed into the door while it was halfway down. The door didn’t fall, but the impact popped two rollers out of the track and bent the vertical rail on the right side. The property manager needed it fixed before the tenant’s lease inspection.

What we did: We pulled the door back into alignment, replaced the bent rail section, and installed a fresh set of nylon rollers with sealed bearings. The hinges were checked and tightened, and the spring tension was rebalanced to account for the new hardware. The tenant was back in the garage within two hours of the call.

The result: The door now rolls quietly and rides the track cleanly through a full open-close cycle. Because this was a rental, the property manager appreciated that a live person answered the phone at 9:30 at night and that the tech showed up in a uniform with a badge. And true to The Garrison Standard, the site was swept clean before the truck pulled away.

Old Extension Spring System Converted to Torsion on a 1990s Home in Roswell

The problem: This home still had the original extension springs running along the horizontal tracks, the kind with the safety cables that rattle around when the door moves. One spring had stretched unevenly, the door was sagging on the left, and the opener was straining hard enough to trip its thermal overload twice a week.

What we did: We converted the door to a torsion spring system, which is cleaner, safer, and tuned to the door’s exact weight. The old extension springs and cables were removed, new bearing plates were mounted above the door, and the opener’s force settings were dialed down because the door no longer fought the motor. The conversion also eliminated the stretched-spring safety risk that comes with older extension systems.

The result: The door now lifts balanced and steady, every time. The opener sounds like a different machine because it’s no longer dragging a sagging door. This is one of those jobs where the change is invisible from the curb but obvious the second you push the button. The work is guaranteed in writing for a full year.

Noisy Door with Worn Rollers and Hinges in Milton

The problem: The homeowner said the garage door sounded like a freight train climbing a mountain every time it opened. Their bedroom sat directly above the garage, and the 6:45 a.m. departure routine had become an alarm clock nobody asked for. The steel rollers had gone flat-spotted and the hinges were grinding metal on metal.

What we did: We replaced all 10 rollers with nylon rollers running on sealed ball bearings, swapped the worn hinges, and lubed the track and springs with the right-weight grease for Georgia’s heat, which thins cheap lubricants by July. The bolts on every bracket were checked and torqued. The door was then cycled five times while the tech listened for any residual noise.

The result: The homeowner told us the next morning they almost overslept, because they couldn’t hear the door at all. That’s the result we’re after. The quote included every roller, hinge, and the lube, agreed to in writing before we started, with a 365-day guarantee protecting the whole repair.

Want Results Like These?

We’re Brock Garage Doors Alpharetta, independently owned and operated by Wade Mercer, and we work to The Garrison Standard on every job: written price before anything starts, a clean site when we leave, and a repair guarantee in writing for 365 days. A real person answers our phone around the clock. Call (229) 404-6747 and tell us what your door is doing. We’ll tell you what it’ll cost before we ever hand you a quote.

Written by Wade Mercer, Owner at Brock Garage Doors Alpharetta, serving Alpharetta, Milton, Roswell, and the surrounding north Fulton area.