The short version: a yearly maintenance visit on a residential garage door runs about 30 minutes and covers 12 specific checks. Lubrication, hardware torque, spring tension, cable wear, sensor alignment, weather seal, balance, opener limits, and a coastal corrosion sweep. The point is to catch a worn spring or frayed cable before it strands a car in the garage at 7 a.m. on a Monday. For Brunswick, St. Simons, and Jekyll Island homes within a mile of salt water, we recommend twice a year because the salt air corrodes hardware roughly twice as fast as inland.
1. Spring Cycle Count and Tension
Torsion springs are rated in cycles. One cycle is one open and one close. A standard 10,000-cycle spring on a household that uses the door four times a day will last about seven years. Heavy-use homes (work-from-home, teen drivers, ADUs) burn through that in half the time. On every maintenance visit, we measure spring tension with a wind gauge, estimate cycle count from age and household use, and flag any spring that is more than 80 percent through its rated life. A spring replaced before it snaps costs less, breaks no cables, and never damages the opener gear. See our full garage door spring repair in Brunswick page for what a snap actually looks like and why we replace pairs.
2. Hardware Torque and Lubrication
Every garage door has dozens of bolts that loosen over time from the vibration of opening and closing. We re-torque every roller bracket, hinge, lift cable drum bolt, and bottom bracket. Loose hardware is the number-one source of the rattling, clanging noise homeowners describe as "the door sounds tired." Then we lubricate with marine-grade synthetic, not WD-40. WD-40 is a solvent. It strips the grease out of bearings and leaves them dry. On hinges, springs, and roller bearings we use a lithium-based or silicone-based lubricant designed for moving metal in humid air.
3. Cables, Drums, and Bottom Brackets
The two steel cables that wind around the drums on a torsion-spring door are under enormous load. A frayed cable is a snapped cable waiting to happen, and a snapped cable lets the door drop. We run a finger along every cable looking for fish-hook fraying, rust pitting, or slip on the drum. Cable replacement is a 45-minute job done preventively. Cable replacement after a drop is a 4-hour job because the panels usually need straightening too.
4. Safety Sensors and Auto-Reverse
Federal law has required photoeye safety sensors on every residential opener since 1993. Most failures we see are not sensor failures. They are alignment drift, a cobweb across the lens, or a pool float blocking the beam. We clean the lenses, re-aim them so both LEDs glow solid, and then test the auto-reverse by laying a two-by-four flat on the floor under the door. If the door does not reverse on contact within two seconds, the opener force needs adjustment. This is a non-negotiable check. A door with a broken auto-reverse can hurt a child.
5. Balance Test
With the opener disconnected, a properly balanced door should hold itself at the halfway position with no help. If it drifts down, the springs are weak. If it shoots up, the springs are overwound. An out-of-balance door makes the opener do the lifting that the spring is supposed to do, which burns out openers in two or three years instead of fifteen. We adjust spring winding by quarter-turns to bring the door back to neutral balance.
6. Weather Seal and Bottom Astragal
The rubber gasket at the bottom of the door (the astragal) and the vinyl seals on the side jambs and header are what keep rain, dust, palmetto bugs, and salt mist out of the garage. Coastal homes burn through bottom seals in three to four years. We measure the gap, replace if torn, and inspect the door's bottom retainer for rust. A new astragal is $40 of material and 15 minutes of labor.
What Comes Next
You can book a tune-up online at our appointment page, or call us at (912) 209-4079. We cover Brunswick, St. Simons Island, Jekyll Island, Savannah, and the rest of the Coastal Georgia and Northeast Florida corridor with same-day service most days. Full maintenance details and pricing live on our garage door maintenance service page. If you already suspect a worn spring, do not wait until it snaps. A pre-emptive spring replacement runs less than the cable and panel damage from a sudden break.