This garage-door glossary is your plain-English safety manual for Haddon Heights homes. Learn the parts that keep your door balanced, quiet, and code-compliant—so you can spot trouble early and avoid costly repairs or dangerous failures.
Whether you live near the PATCO speedline or on a tree-lined Haddon Heights block, knowing garage-door parts helps you choose the right repairs, compare pricing, and keep your family safe. We’ve broken down the most common terms so you can speak the language of garage-door pros before you call for service.
- Torsion spring
- A tightly wound metal coil mounted above the garage door that counterbalances the door’s weight. When the door opens, the spring unwinds and stores energy; when it closes, the spring rewinds and lifts the door. Torsion springs are safer than extension springs because they break less often and stay contained. If yours is more than 7–10 years old, consider a spring replacement before it snaps.
- Extension spring
- A long, stretched spring mounted on either side of the door track that extends and contracts to help lift the door. Unlike torsion springs, extension springs can snap violently and send metal flying—posing a serious hazard. Haddon Heights homes built before 1990 often still have them; we strongly recommend upgrading to torsion springs for safety and longevity. Learn more at our full list of services.
- Track
- The metal channel that guides the door as it moves up and down. Horizontal tracks run along the ceiling, and vertical tracks run beside the door. Bent or misaligned tracks cause noisy operation and uneven travel. If your door jerks or skips, the tracks may need adjustment or replacement.
- Roller
- Small wheels—usually nylon or steel—that ride inside the track and support the door panels. Worn or cracked rollers make grinding noises and can derail the door. Replacing rollers every 5–7 years prevents sudden failures and keeps your door running smoothly.
- Opener
- The electric motor that powers the garage door open and close. Modern openers include safety features like auto-reverse and battery backup. If your opener is older than 10 years or lacks photo-eye sensors, it’s time for an upgrade to meet current safety codes.
- Photo-eye sensor
- A pair of infrared beams mounted near the bottom of the door that detect obstructions. If the beam is broken while closing, the door automatically reverses. Haddon Heights code requires these sensors on all new installations; test them monthly by waving an object in the path.
- Limit switch
- A safety switch inside the opener that tells the door when to stop moving. It prevents the door from slamming into the ceiling or floor. If your door stops short or won’t close fully, the limit switch may need adjustment or replacement.
- Weatherstripping
- The rubber or vinyl seal along the bottom and sides of the door that blocks drafts, rain, and pests. Cracked or flattened weatherstripping lets in water and cold air, increasing energy bills. Replace it every 2–3 years or when you see daylight around the door edges.
- R-value (insulation)
- A measure of how well garage-door insulation resists heat flow. A higher R-value (e.g., R-12 or R-16) keeps your garage warmer in Haddon Heights winters and cooler in summers. Insulated doors also reduce noise and improve energy efficiency—especially important if your garage is attached to your home.
- Cable drum
- The grooved wheel at the end of the torsion spring shaft that winds and unwinds the lift cables. If the cable drum is cracked or the cable is frayed, the door can drop suddenly. Inspect drums and cables annually; replace them together to prevent imbalance.
- Bottom seal
- The thick rubber strip attached to the bottom edge of the door that seals against the driveway. It prevents water, snow, and pests from entering. A worn bottom seal lets in moisture that can warp the door or damage the floor—replace it if you see cracks or gaps.
- Travel module
- The electronic brain inside the opener that controls door movement, safety features, and remote signals. If your opener beeps erratically or ignores remotes, the travel module may need reprogramming or replacement. Upgrading to a smart travel module lets you monitor your door from your phone.
- Trolley
- The part of the opener that connects the motor to the door via a drive belt or chain. If the trolley is loose or the belt is slipping, the door may move unevenly or stop mid-travel. A professional can tighten or realign the trolley to restore smooth operation.
- Manual release
- A red handle or rope inside the garage that disconnects the door from the opener in a power outage or emergency. Always pull the manual release toward the door to avoid injury. Haddon Heights code requires this feature on all garage-door openers for safe manual operation.
Frequently Asked Questions
Should I replace my Haddon Heights garage door’s extension springs with torsion springs even if they still work?
Yes—extension springs are a known hazard that can snap without warning, sending metal flying. Torsion springs are safer, last longer, and meet modern safety codes. If your door is more than 10 years old, upgrading now prevents a dangerous failure and may qualify you for insurance discounts.
Is it worth adding insulation to my garage door in Haddon Heights’ humid summers and cold winters?
Absolutely. An insulated door with an R-value of 12 or higher keeps your garage 10–15°F cooler in summer and warmer in winter, reducing energy costs. It also dampens noise and prevents condensation that can damage stored items—especially important if your garage connects to your home.
Do I really need photo-eye sensors on my old Haddon Heights garage door opener?
Haddon Heights building codes now require photo-eye sensors on all garage doors. They detect obstructions and prevent crushing injuries. If your opener lacks them, installing sensors is a quick upgrade that protects kids, pets, and property—and keeps you compliant with local safety laws.
Have a garage door repair question? Riverside Garage Door's Repairs LLC is licensed, insured, and gives Haddon Heights homeowners a free written estimate.