01 Component repairs
Garage door track repair in Evanston, IL
Track is the only part of a garage door that tells you the truth about the building it is bolted to. When it goes out of plumb behind an alley garage, the concrete usually moved first.
- Vertical and horizontal track straightened, re-plumbed or replaced
- Plumb, spacing and clearance measured, not eyeballed
- We say when the slab has to be dealt with before the door
- Off-track doors put back properly, not just lifted back in
02 How it is put together
Vertical track, horizontal track, and the curve between them
People say track as though it were one thing. It is three, and they fail for different reasons.
Vertical track runs up each side of the opening, bolted to brackets that are fixed to the wood jamb. Its job is to hold the door flat against the opening and give the rollers a straight line to run in. It must be plumb, and both sides must sit the same distance apart at the bottom as at the top.
Horizontal track carries the door back over your car, hung from the ceiling framing on angle iron. It takes the door's weight once the door is up, which is why sagging hangers are so common in old garages with undersized rafters. It is not perfectly level on purpose — the back end sits slightly high so the door rolls forward and pulls tight against the header seal as it closes.
The radius curve joins them, and it is the part that gets damaged most and repaired worst. It is a stamped piece with a fixed radius, usually 12 or 15 inches. You cannot bend one back into shape accurately, and a curve with a kink in it will pick a roller out of the track sooner or later.
- Vertical track holds the door flat; horizontal track carries its weight
- Track brackets must land on solid jamb material, not on shims or rotted timber
- Rear hangers should be angle iron cross-braced back to structure, not a strap dangling from one nail
- The radius curve is a fixed part — replace it rather than straighten it
- Low-headroom garages need a different track kit entirely, which is common in this housing stock
03 The numbers
What we measure, and what it should be
Track work is a measuring job. These are the checks we run before touching anything, and the symptoms that show up when each one has drifted.
| What we check | What it should be | What happens when it drifts |
|---|---|---|
| Vertical track plumb | Within roughly 1/8 inch over the full height, both sides | Door pulls to one side, one cable takes more load, rollers ride the flange |
| Spacing between the two vertical tracks | Equal at the bottom and the top, within about 1/8 inch | Door binds low down and goes slack high up, or the reverse |
| Roller to track clearance | About 1/16 to 1/8 inch — free but not loose | Too tight it drags and grinds; too loose the roller wanders and climbs out |
| Horizontal tracks level with each other | Matched side to side within about 1/4 inch | Door racks in the open position and the top section twists |
| Horizontal track pitch | Slightly high at the back so the door pulls in as it closes | Door will not seal at the header, or drifts open on its own |
| Rear hanger security | Angle iron into solid framing, cross-braced | Track sags, door hesitates in the curve, rollers jump at the transition |
| Track brackets and lag fasteners | Tight into sound jamb timber | Track flexes on every cycle and bolts elongate their holes |
| Curve radius condition | No kinks, creases or flare in the stamped section | Repeated roller jumps at exactly the same point in travel |
Clearances and hardware fixing follow the published DASMA door and hardware guidance. If a track has been shimmed out to hide a problem, we take the shims off and find out what the problem was.
04 Why it moved
Three things bend a garage door track, and one of them is local
Almost every track we look at has gone wrong for one of three reasons. Only the third is interesting.
1. Impact
Somebody reversed into it, a ladder went over, a bike fell against it, or the door came down on the tailgate. Impact damage is obvious, usually confined to the vertical track or the curve, and the cheapest of the three to put right because the rest of the system is still true.
2. Fasteners working loose
A door cycled four times a day does around 1,500 cycles a year, and every one of them puts a small load into the track brackets. Lag screws in eighty-year-old jamb timber slowly back out. Bolts elongate their holes. Rear hangers nailed rather than lagged into a rafter start to sag. Nothing dramatic happens for years, then the door begins hesitating in the curve and a roller jumps. Tighten the wrong things and it comes back; the real fix is often new backing timber behind the bracket.
3. The slab moved — the Evanston version
This is the one that catches people out. In an alley-served detached garage, the front edge of the slab is the part that gets wet. Water running off an unpaved alley washes fines out from under the apron and the front of the slab, the sub-base loses support, and the concrete tips. Not much — half an inch across an eight-foot opening is plenty. But the jambs are fixed to framing that sits on that slab, so when the slab tips, the whole opening racks. Your vertical track is now out of plumb, the two tracks are no longer parallel, and the door has nowhere true to run.
You will usually see the evidence before we do: a wedge of daylight under one corner of the closed door, a bottom seal that touches on one side only, or a door that has started throwing a roller in the same spot every few weeks. It also shows up as chewed rollers and uneven cable wear, because everything downstream of a racked opening works unevenly.
05 Sequence
Doing it in the right order when the concrete has moved
Re-tracking a door on a slab that is still moving is a temporary fix. It buys you a season. Here is the order that actually holds.
Find out whether the slab has moved at all
Level across the threshold, plumb both jambs, and compare the gap under the closed door corner to corner. If the opening is racked, no amount of track adjustment is going to be permanent, and we will say so before you spend anything.
Make the door safe and usable in the meantime
We can straighten and re-set the track so the door runs without damaging itself while you sort the concrete out. That is honest interim work, and we will call it what it is rather than dressing it up as the repair.
Level the concrete first
Slab lifting, mudjacking or replacement, plus whatever is needed to stop water undermining the apron again. This is a concrete contractor's job, not ours, and it needs to happen before the final door work, not after.
Then re-hang and re-plumb the door
With the opening true again, vertical track is set plumb and parallel, horizontal track is levelled and pitched, hangers are re-braced, and the door is balanced and safety-tested. Now it stays put.
We do not do concrete and we do not take a cut for referring it. We will tell you what needs doing and in what order, which is the part that saves you money.
06 Repair or replace
When track can be straightened, and when it has to come off
Straightening track is legitimate work, done with the right tools, on the right damage. It is also the single most commonly botched garage door repair we get called out behind. This is where we draw the line.
- Straighten: a gentle flare or bow in the vertical track flange, where the steel has spread but not creased
- Straighten: a bracket pulled loose that has drawn the track slightly out of plumb without deforming it
- Replace: any crease, kink or fold — creased steel has lost its stiffness and will fold again at the same point
- Replace: damage anywhere in the stamped radius curve, always, without argument
- Replace: rust perforation along the bottom of a vertical track that has stood in a wet threshold for years
- Replace: a track that has been shimmed, drilled, spliced or bolted back together by a previous repair
- Replace: any track a roller has gouged deeply enough to catch a new roller wheel
Track is not an expensive part. Labour to come back and do it twice is. If your door has been off its track more than once in a year, the answer is not another re-tracking — see what a full diagnosis covers.
07 Root cause
The alley is the actual problem, and there is a programme for it
If your slab keeps moving, fixing the concrete once is treating the symptom. The water has to go somewhere else.
Evanston has more than 300 unpaved alleys, and the City grades them periodically from each spring to knock out the ruts and potholes and cut down standing water. Grading helps, but a graded gravel alley is still a gravel alley: it holds water, it channels runoff toward the low properties, and it keeps working on the sub-base under the nearest slab. Add the fact that the entire city runs on a combined sewer system with flow restrictors deliberately designed so heavy rain ponds at street and alley level rather than backing into basements, and standing water at a garage threshold is a normal Evanston event rather than a freak one.
The permanent fix
The City runs an alley special-assessment paving programme, and it is genuinely worth knowing about if your garage is one of the ones taking the water. In outline: you call 311 for a petition form, gather signatures from 51 percent of the abutting property owners, and the petition goes to the Board of Local Improvements and then to City Council. Cost is split, with homeowners paying half and the City paying half, and the homeowner share is assessed per residential unit and payable over ten years. What you get is eight-inch concrete pavement with storm sewer and drainage structures — which is to say, the water finally has somewhere to go.
That is the summary as we understand it from the City's alley improvement pages. Programme details and cost splits do change, so confirm the current terms with Evanston before you start collecting signatures.
What we see on the ground
Detached alley-loaded garages are the rule rather than the exception across west Evanston, south Evanston and the older blocks north of downtown, and roughly four in ten Evanston homes were built before 1940 — meaning original 8- and 9-foot openings, shallow headroom, and jamb timber that has been carrying a door since the 1920s. Track problems here are rarely just track problems. If the opening has racked far enough that the door no longer squares up in it, the honest conversation may be about re-hanging a door properly once the concrete is right, rather than a fourth adjustment. Our write-up on alley garages goes through the whole pattern, and our hours and address are a block west of Dodge if you want to talk it through.
06 Questions we get asked
Track questions from Evanston homeowners
The questions that come up once somebody has noticed the door no longer sits square in its opening.
Can a bent garage door track be straightened, or does it need replacing?
My door came off the track. Can I just push the roller back in?
Why does my door only bind at one particular height?
How do I know if my garage slab has settled?
Should I fix the concrete before or after the door?
Do you do the concrete work as well?
Is track damage covered by the noise my door has started making?
My garage has almost no headroom above the door. Does that change the track?
Garage door stuck, loud, or off its tracks?
One call reaches the people who will actually be doing the work. Tell us what the door is doing and we will tell you straight what it needs — and when we can get a truck to you.