Garage Door Repair Glossary

This glossary cuts through the jargon so Alloway homeowners can spot a $200 repair from a $1,200 overhaul before the tech even knocks. Learn the real names of the parts on your door, what they cost to fix, and how to avoid the upsells that drain budgets in our area.

Garage doors in Alloway take a beating from salt air, humidity swings, and daily use. When something stops working, knowing the lingo helps you compare quotes and avoid surprise charges. View our full service list or request a free estimate before the next storm rolls in from the Delaware Bay.

Torsion spring

A tightly wound metal coil mounted above the garage door that counterbalances the door’s weight, letting it open and close smoothly. When one breaks, the door can slam shut or refuse to move—common in Alloway after winter freezes. Replacing it yourself risks serious injury; call a pro for a quick, safe swap under $250. See our full list of services.

Extension spring

Long, stretched springs running parallel to the door tracks that extend and contract to lift the door. They’re cheaper than torsion springs but wear out faster in humid climates like Alloway’s. A snapped extension spring can send the door crashing down—always replace both sides at once. Learn more at request a free estimate / contact us.

Track

The metal rails (usually two vertical and one horizontal) that guide the door up and down. Dents or misalignment in Alloway’s older homes often cause off-track issues after a hard wind or minor fender-bender. Straightening or replacing tracks runs $150–$400 depending on damage.

Roller

Small wheels (nylon or steel) that ride inside the tracks and support the door’s weight. Worn or cracked rollers in Alloway’s salt-air environment can make the door grind or jump tracks. Replacing all rollers at once costs about $100–$200 and prevents bigger headaches.

Opener

The electric motor that powers the door’s movement, often paired with a chain, belt, or screw drive. If your opener in Alloway clicks but the door doesn’t budge, the logic board or capacitor may be fried—common after power surges from summer storms. A new opener starts at $250 installed.

Photo-eye sensor

Safety beams mounted near the floor that detect obstructions and stop the door from closing. Dirty or misaligned sensors in Alloway’s dusty garages cause false triggers or dangerous gaps. Cleaning the lenses monthly saves $100+ in service calls.

Limit switch

A small dial or digital setting inside the opener that tells the door when to stop opening or closing. If your door reverses too early or won’t close fully in Alloway’s humid weather, the limit switch may need a simple adjustment—free if you DIY, $80+ if a tech visits.

Weatherstripping

The rubber or vinyl seal along the door’s edges that blocks drafts, pests, and moisture from Alloway’s coastal air. Cracked or missing strips let in water that rusts tracks and jams springs—replacing it costs $30–$80 and cuts energy bills year-round.

R-value (insulation)

A number measuring how well garage door panels resist heat flow; higher R-values mean better insulation. In Alloway’s hot summers and chilly winters, upgrading to an R-12 or R-16 door keeps the space above the garage usable and saves on HVAC costs. Expect to pay $500–$1,200 for a new insulated door.

Cable drum

The round spool that winds and unwinds the lift cable as the door moves. If a cable drum in your Alloway garage is cracked or the cable jumps off, the door can become unbalanced and dangerous. Replacing both cables and drums runs $150–$300.

Bottom seal

The thick rubber strip at the bottom of the door that seals against the driveway. A worn seal lets water, salt, and critters into your Alloway garage—replacing it costs $20–$50 and prevents floor damage and pest problems.

Travel module

The electronic brain inside modern openers that controls speed, force, and safety features. If your opener in Alloway starts acting erratically, a faulty travel module may need replacement—$120–$250 installed, but often cheaper than a whole new opener.

Trolley

The part that connects the opener to the door, moving it along the rail. A bent or broken trolley in Alloway’s older homes can cause the door to jerk or stop mid-cycle. Repairing or replacing it costs $80–$200 and restores smooth operation.

Manual release

A red cord or lever that disconnects the door from the opener for emergency use. If your opener fails during a summer storm in Alloway, pulling the manual release lets you open the door by hand—always test it twice a year to avoid surprises.

Frequently Asked Questions