A roll-up door that stops a few inches short of the floor is more than an annoyance. It lets in rain, heat, pests and dust. It also leaves your building less secure, and the longer you ignore it, the worse the problem tends to get.
Rolling steel doors and rolling grilles work differently from a home garage door. They are made of slats that wind up onto a barrel above the opening, and they ride in guides along each side. When one of those parts is off, the door can stop short, sit crooked or jam. Here are the usual reasons.
Bent or damaged guides and slats
A roll-up door is only as straight as its guides and slats. A forklift tap, a delivery truck backing too close or a cart that rolls into the door can bend a guide or dent a slat. Even a small bend can make the door catch on its way down.
Look at the door with the lights on. Check for dips, dents, scrapes or slats that do not line up. If you see any, do not force the door. Pushing it can bend the guides more and make the repair bigger.
Dirt, corrosion and lubrication
Dirt, debris and corrosion in the guides
Grit, leaves and packed-in dirt can keep the door from traveling smoothly. Near the Gulf, salt air and humidity add corrosion to the mix. Rust on guides, fasteners and slats creates friction and rough spots.
A simple walk-around helps. Clear anything on the floor where the door lands, and look along the guides for dirt or rust. If you see heavy buildup or corrosion, tell us when you call.
Lubrication, and the right kind
A door that is dry will drag, squeal and wear faster. But the wrong product can do harm. Heavy grease attracts grit and turns into a gummy mess in the guides. Use a lubricant made for overhead doors, apply a light coat and wipe off the excess. If you are not sure what your door needs, ask a pro.
Motor, spring and installation problems
Operator and limit problems
If your door has a motor, the operator tells it where "closed" is. If those travel limits drift, or a part wears out, the door can stop early. A faulty safety edge on the bottom bar, or a blocked photo eye if your door has one, can also stop or reverse the door.
You can check that nothing is in the doorway and that the sensors are clean. But do not adjust the limits yourself. The wrong setting can strain the motor or let the door drive into the floor. A technician should set them.
Counterbalance spring problems
Inside the barrel, a spring system carries most of the door's weight. If it loses tension or wears out, the door can sit partly open, drift, or be hard to run. Springs hold a lot of stored force and can seriously hurt someone. Never try to adjust or replace them yourself. Call a professional.
Worn bottom bar, shifting buildings and poor fit
A few other causes show up often:
- A bent or worn bottom bar or seal that no longer meets the floor.
- A shifted building or changed floor. If the slab settles or the opening moves, parts can loosen and no longer line up.
- An installation that was never quite right. If the problem has been there since day one, the door may not have been squared or sized correctly for the opening.
What to do right now
- Stop using the door if it jams or sounds wrong. Forcing it can add damage.
- Clear the floor and check for anything blocking the path.
- Look for visible bends, dents or gaps, and make a note of them.
- Call a professional to inspect it.
If the door is stuck open and you cannot secure the building, call us right away. We offer 24/7 emergency service.
Frequently asked questions
Is it safe to keep using a door that will not fully close? Not for long. Forcing it can bend the guides and strain the motor. It also leaves the building open. Get it looked at soon.
Can I straighten a bent guide myself? No. Guides and slats are under load, and a wrong move can make the damage worse or cause injury. A pro should inspect and repair it.
Keep your building secure
Overdoors of Florida serves Naples-area businesses with rolling steel doors, insulated doors and rolling grilles. We have been family-owned since 1983. See more on our commercial doors page, or read why a commercial overhead door is a smart choice.
Call or text (239) 643-7612, or request a free quote. We give you up-front pricing before any work begins.
Call or text (239) 643-7612, or request a free quote.