Why Garage Door Springs Fail Faster in Dunn: And What to Do About It
2026-04-08 7 min read
If you've lived in Dunn for more than a few years, you already know the weather here doesn't mess around. Summers are hot and muggy, winters throw occasional ice events at you, and the humidity seems to hang in the air for months at a stretch. What you might not know is that same climate is quietly working against one of the hardest-working parts of your garage door: the springs.
Garage door springs are under enormous tension every single day. Every time that door goes up and down, those springs cycle through stress and release. In a dry climate, that wear is gradual. In Dunn. where humidity peaks around 77% in late summer months and the area sees rain on roughly 165 days a year. that wear accelerates significantly.
How Humidity Destroys Springs From the Inside Out
Steel garage door springs are designed to handle thousands of cycles. The two main types. torsion springs (mounted above the door on a horizontal bar) and extension springs (running along the tracks on either side). are both vulnerable to the same enemy: moisture-driven corrosion.
When humid air settles inside your garage, it makes contact with the bare metal coils of your springs. Over time, that moisture causes surface rust. Rust weakens the metal, creates microscopic cracks, and reduces the spring's ability to flex under load. The result? A spring that might last 10,000 cycles in a drier region could give out in 5,000 to 7,000 cycles here in Harnett County.
The problem compounds in homes where the garage isn't climate-controlled. Many of the ranch-style homes and traditional subdivisions around Dunn. neighborhoods like Oakgrove Estates or West Haven. have attached garages that sit uninsulated through both the scorching July heat and the damp winter months. That combination of temperature swings and moisture is particularly rough on spring metal.
Warning Signs Your Springs Are on the Way Out
Springs rarely snap without giving you some notice first. Here's what to watch for:
- The door feels heavy when you lift it manually. Disconnect the opener and try to lift by hand. A properly balanced door should open smoothly with one hand. If it feels like you're lifting a truck, the springs are losing tension. - Visible rust or corrosion on the coils. Take a flashlight and look closely at the spring coils. Surface rust that you can wipe off isn't immediately critical, but deep pitting means the metal is already compromised. - Uneven movement. If the door rises on one side faster than the other, one spring is weaker than its partner. This also puts stress on your opener motor. - A loud bang from the garage. A snapped spring sounds like a gunshot inside the garage. If you hear this, stop using the door immediately.
For a deeper look at how panel stress from imbalanced springs can cause secondary damage, check out our guide to garage door panel repair.
Why You Shouldn't DIY Spring Replacement
This is a point worth being blunt about: garage door spring replacement is genuinely dangerous. Torsion springs are wound under hundreds of pounds of force. A spring that releases unexpectedly can cause severe injury. This isn't a scare tactic. it's the reason professional technicians use specialized winding bars and follow strict safety protocols.
If a spring has already broken, do not attempt to operate the door manually or with the opener. The door could drop suddenly with no counterbalance. Call a professional and leave it alone until it's fixed.
Dunn Garage Doors handles spring replacements throughout Harnett County. and we see a significant uptick in calls every spring (the season, ironically) and after humid summers when corrosion has had all year to build up. We also serve customers in Benson, Erwin, and Coats who deal with the same regional climate conditions.
How to Extend Spring Life in Dunn's Climate
You can't stop humidity, but you can slow down its damage:
Lubricate Springs Twice a Year
Apply a lithium-based garage door lubricant. not WD-40, which attracts dust and can actually accelerate corrosion. to the spring coils in spring and fall. This creates a moisture barrier and keeps the metal from oxidizing. Our fall preparation checklist covers this and other seasonal tasks in detail.
Consider Galvanized or Coated Springs
When it's time for replacement, ask about galvanized springs or springs with a corrosion-resistant coating. They cost a bit more upfront but hold up considerably better in humid climates like ours.
Keep the Garage Ventilated
A garage that traps humid air is harder on every metal component. springs, hinges, tracks, and hardware. Even cracking a window or running a small dehumidifier during the worst summer months makes a real difference.
Balance the Door Annually
An out-of-balance door puts uneven stress on springs. An annual inspection catches tension problems before they become broken-spring emergencies. You can schedule a service visit to have a technician check balance, tension, and lubrication in one visit.
When to Replace Both Springs at Once
If one spring breaks, the other is probably not far behind. especially on older doors. Both springs have been cycling the same number of times under the same conditions. Replacing just the broken one is technically possible, but many homeowners end up calling again within months when the second one goes. Replacing both at the same time saves a service call and keeps the door balanced.
See our services page for a full list of spring repair and replacement options available to Dunn-area homeowners.
Frequently Asked Questions
Q: How long do garage door springs typically last in Dunn, NC? A: Most standard springs are rated for around 10,000 cycles. roughly 7 to 10 years with average use. In Dunn's humid climate, however, corrosion can shorten that lifespan by 20,40% if springs aren't lubricated and maintained regularly. Homes near the Black River corridor or in low-lying areas with higher ambient moisture may see even faster wear.
Q: Can I still use my garage door if a spring is broken? A: You shouldn't. A broken spring removes the counterbalance that makes the door manageable. The opener motor will strain under the full weight of the door, risking burnout. More importantly, a door with a broken spring can drop without warning. It's a safety issue. call for repair before using the door again.
Q: Do both springs need to be replaced at the same time? A: Not always required, but strongly recommended. If both springs are the same age and have been through the same number of cycles, the surviving spring is almost certainly close to failure. Replacing both together saves money on a second service call and keeps the door properly balanced.