Lawrenceville, GA · Garage Door Service
Mountain Park homes date mostly to 1979, meaning original steel doors on galvanized 7x19 cable. We drive 11 miles from Lawrenceville to fix snapped or frayed cables.
Most houses around Mountain Park went up in the late 1970s, with the area's median build year sitting at 1979. That means a lot of the original garage doors here are single-layer steel sectional units, hung on lightweight tracks with 7x19 galvanized aircraft cable that was never meant to run for four decades straight. That cable is thin - usually 1/8 inch - and it lives outside the drum in a groove that was cut for a specific wind count. Forty-plus years of that groove opening and closing wears a channel into the cable strands themselves, not just the coating. By the time an owner notices fraying at the bottom bracket, the cable has usually already lost a chunk of its rated strength. On a standard double door, that's two cables doing the work of holding several hundred pounds of steel level while the springs do the lifting. When one goes, the door doesn't ease down - it drops on one side, fast.
On a lot of these older doors, the first sign is the door hanging crooked in the opening - one bottom corner sitting an inch or two lower than the other, because one cable has stretched or partially frayed while the other is still holding. Sometimes it's a snapping sound and the door slams down on whatever's underneath it. On the smaller single-car bays that were common in this era's construction, the drop happens faster because there's less cable length to absorb the failure. We also see the cable jump the drum groove entirely on doors that have had the track knocked out of alignment over the years - the cable spools wrong, binds, and shreds itself against the bracket edge.
We carry 7x19 galvanized cable in the gauges that fit the sectional doors common to houses built through the 1980s and 90s in this part of the county, along with the bottom brackets and safety cables that pair with them. What we don't always have on the truck is cable sized for oversized or custom doors - those get special-ordered, and that adds a day or two. For a standard double door on a house from this era, we're usually running both cables at once even if only one has failed, since the other one is the same age and under the same load.
We don't quote a number here without seeing the door - spring tension, drum condition, and whether the track took damage on the way down all change the job. What we can tell you is that a straight cable swap on a standard double door is a smaller job than a full spring and cable replacement, and it's a different job entirely from an opener repair. If you call around asking for a flat price over the phone, be skeptical of anyone who gives one without asking what year the door is.
Cold-weather stiffening isn't a big factor here - this area sits in a moderate cold climate band, so we're not dealing with the extreme freeze-thaw cycling that snaps brittle cable outright. The bigger issue on 1979-vintage doors is that the drums, rollers, and track brackets are often original too, and a cable job on a door that old sometimes uncovers a bent track or a seized roller that the cable was masking. We won't sell a cable-only fix on a door where the track is the real problem - that's a repair that doesn't hold, and we'll say so before we start.
We come out from Lawrenceville, about 11 miles over, with cable stock sized for the sectional doors typical of this era already on the truck. We release spring tension, pull the old cable off the drum and bracket, check the drum groove for wear grooves deep enough to chew through a new cable in months instead of years, and run fresh 7x19 on both sides. Before we leave, we re-level the door and check the safety cable on the spring itself, since a door this old often has none installed at all.
On a door built around the late 1970s like most in Mountain Park, the cable has usually been fraying inside its drum groove for months before it lets go. The visible failure is sudden, but the wear behind it isn't. Once a strand starts going, the rest follow fast, especially under a double door's full spring load.
No. With one cable gone, the door is being held level by a single line under full load, and it can drop the rest of the way without warning. Leave the door down, unplug the opener so it can't try to cycle, and don't park under it.
For standard sectional doors typical of houses built through the 1980s and 90s, yes - we stock 7x19 galvanized cable in the common gauges. Oversized or custom door cable sometimes has to be special-ordered, which adds a day or two to the job.
We run out of Lawrenceville, about 11 miles from Mountain Park. We don't keep a branch or crew stationed locally - every job here is a truck coming out from Lawrenceville.
Call now or request a free quote - same-day service on most repairs, upfront written pricing.
