A garage door needs two kinds of attention: a short safety test every month and one larger job each season. DASMA, the door and opener industry’s trade group, recommends monthly checks by the owner plus a yearly visit from a trained technician for the parts that stay under spring tension.
Portland’s calendar sets the order. Seals matter most before the wet season settles in, lubricant matters before cold mornings stiffen the hardware, and spring is when you find out what the winter loosened. If you would rather hand off the yearly part, our tune-up and maintenance visit covers it at a posted price.
What stays off a homeowner’s list
Any adjustment to springs, lift cables, bottom brackets or fasteners painted red stays off your checklist, because those parts carry the springs’ stored force and can snap free when loosened.
DASMA’s opener guide tells owners to leave bottom brackets, red fasteners, cables and supports to trained technicians, and its door safety tips add that worn or frayed cables should be replaced only by a technician. Looking closely at those parts belongs in the routine, and so does a light spray on the spring coils; putting a wrench on them does not.
Everything else here can be done from the floor or a short stepladder with a rag, a flashlight, a socket set and a can of lubricant sold for garage doors. If a part name is unfamiliar, the parts glossary defines it.
The monthly five-minute safety routine
Once a month, confirm that the door reverses, that the photo eyes stop it, and that it balances by hand; all five checks together take about five minutes.
- Watch one full cycle from inside. Listen for scraping, popping or a pause at the same spot each trip. Note anything new before it turns into a repair.
- Run the reverse test. Lay a two-by-four flat across the doorway and close the door with the wall button. Federal opener rules call for reversal on contact with an obstacle roughly one and a half inches tall.
- Break the photo eye beam. As the door starts down, pass an object in front of one sensor. DASMA’s guide says the door should not close unless someone holds the wall button.
- Check the photo eye height. The same guide puts the sensors no higher than 6 inches above the floor. Brackets get kicked and bumped, so look at both sides.
- Feel the balance. With the door down, disengage the opener at the red handle, bring the door up by hand to roughly 3 to 4 feet, and let go. DASMA says it should stay there. Reconnect the opener afterward.
Stop using the opener on a door that fails the reverse or photo eye test, and call. A door that sinks or climbs from that height has springs that need a technician’s adjustment.
The year at a glance
Seals come first in early fall, lubricant and fresh batteries in late fall, a hardware check in spring, and paint and cleaning in summer, each timed to what the weather is about to do to the door.
| Season | When | Main job | Why then |
|---|---|---|---|
| Early fall | September to mid-October | Bottom seal, retainer, perimeter seal, threshold, water at the apron | Rubber is still flexible and the slab is dry enough to work on |
| Late fall | November, before the first frost | Lubricant on hinges, roller axles and springs; new batteries in remotes and keypad | Cold stiffens hinges and rollers and saps weak batteries |
| Spring | March to April | Tighten hardware, inspect rollers and cables, check opener drive tension, retest balance | You can see what the wet, cold months loosened or rusted |
| Summer | July to August | Wash, touch up paint or stain, clean sensor lenses, check the release handle | The driest weeks of the year give paint time to cure |
Early fall: seals before the rains
In September or early October, close every gap that lets water under or around the door, while the rubber and the slab are still dry.
Start at the jambs and the header, which get less attention than the floor. The perimeter seal should press lightly against the door face all the way around; a flap that has curled away, cracked in the sun or pulled its nails leaves a path for wind-driven rain along the sides.
Then bend a short length of the bottom seal between your fingers. Rubber that feels stiff or splits at the fold will not seal once nights turn cold, and a retainer that is bent or crusted white can pinch a new strip. If the slab has a threshold, check that its corners still hold to the concrete.
Finally, look up and out. A gutter that spills over the opening or a downspout aimed at the driveway feeds water to the seal all winter, and wet leaves packed against the door hold moisture on the bottom section. Our weather seal and threshold service handles the parts you would rather not fit yourself.
Late fall: lubricant before the first freeze
In November, ahead of the first frosty morning, lubricate the moving metal and refresh the batteries, so the cold has less to grab.
Linear’s homeowner’s manual warns that hinges and rollers may bind in cold periods and that doors can swell and grow heavier in wet ones, which is why an opener that ran smoothly in August can labor in December. A light coat on each hinge at its pivot, on the axles of steel rollers and along the springs, wiped so nothing drips, keeps everything moving.
Leave the tracks alone, since they should stay clean and dry, along with a belt drive’s belt and any sealed nylon roller. While the ladder is out, swap the batteries in every remote and the outside keypad, because a tired cell is the first thing cold weather finds.
Storm preparation goes further, from testing a backup battery to staging an ice kit by the door, and it has its own ice storm prep guide.
Spring: a hardware and balance check
In March or April, look for what months of damp and cold have loosened, worn or rusted, starting with the fasteners you are allowed to tighten.
Snug the hinge screws and the lag screws holding the track brackets to the jambs and ceiling, without forcing them into soft wood. Leave the bottom brackets alone even if they look loose, since the lift cables attach there under spring tension.
Next, watch the rollers as the door runs. A roller that wobbles, has a chipped wheel or has worn flat spots will only get louder, which is the point to read up on roller and hinge replacement. From the floor, follow each lift cable down to its bracket and look for broken strands or rust in the last few inches.
Check the opener’s drive tension against its manual. Linear’s, for one, asks owners to check belt or chain tension every six months and warns that a chain set too loose or too tight makes the sprocket noisy. Finish with the balance test and compare it with how the door felt in the fall.
Summer: the dry window for paint and small fixes
July and August are the driest months at Portland’s airport, each averaging roughly half an inch in NOAA’s 1991 to 2020 normals, so summer is the season for paint and cleaning.
Wash a steel door with mild soap and a soft brush, rinse it, and look along the bottom section for chips or scratches. Touching those up while the metal is dry keeps rust from spreading under the paint.
Wood doors want fresh paint or stain on the same schedule, with extra care at the bottom edge and lowest panel, which take the most splash. Then wipe the photo eye lenses with a soft cloth, make sure the red release handle still hangs within reach, and replace any burned-out bulb in the opener.
Keep the paperwork where the door is
Store the door and opener manuals in the garage, along with a short log of what you checked and when.
DASMA suggests hanging the owner’s manuals near the door. If yours are gone, the opener’s model number is on the back of the power unit, and makers such as Genie post manuals by model. A dated line for each check, such as ‘reverse test passed’ or ‘bottom seal split at left corner,’ turns a vague worry into something a technician can act on.
When the checklist turns into a repair call
Stop the routine and call when a check turns up a problem with a part under tension or a safety feature that fails.
- The door will not hold at 3 to 4 feet, or it is heavy from the first inch, as described on door heavy to lift
- The reverse test or the photo eye test fails
- A cable shows broken strands, or a torsion spring shows a gap in its coil
- A roller has jumped out of the track, or the door binds and shudders on the way up
- The noise is grinding rather than squeaking, even after lubricant, which noisy, grinding or squeaking doors explains