How garage door safety features work

Ensure safety, prevent injuries and head off unnecessary garage door repairs by knowing how your overhead garage door and automatic garage door opener work. This will help you know what you're getting into when you hire a well-reviewed local garage door service and repair professional.

The majority of garage doors in American households use the same operating principles. A large door that’s separated into flexible panels moves up and down on rollers installed in a track system. The garage door opener, usually mounted in the center of the garage provides the actual pulling power to bring the garage door up or down.

However, without the weigh-reducing assistance of the springs that typically run across the length of the garage door opening, the opener motor wouldn’t be able to pull up the significantly heavy weight of a garage door.

Is your garage door safe?

Since the garage door is typically the largest moving object within a home, modern overhead garage door opening systems also feature several key safety features that protect home occupants, children and pets from death or injury due to accidental misuse or malfunction.

Auto reversal prevents injuries

The first safety feature is an automatic reversal system within the garage door opener itself. If the door is closing and an obstruction or solid object is detected – usually anything that slows or stops the door’s normal operation – the door should automatically stop and return to the open position. The U.S Consumer Product Safety Commission has required a reversing safety feature on all new garage door openers manufactured since 1991.

Because garage door springs and openers can degrade over time, it’s important to occasionally test this safety feature. With the garage door open, place a solid object such as a 2-by-4 board or a cinder block where the door will close. Never test any safety feature using your or another person’s body. With the board or block in place, press the close button. If working properly, the garage door should close on the obstruction and immediately reverse the closing operation when it comes in contact with it.

Motion detector enhances garage door safety

Another key safety feature to prevent entrapment from garage doors is the “electric eye” sensor system found on many more modern garage door systems. Sensors placed on either side of the garage door’s track system about 4 to 6 inches off the ground transmit an infrared beam of light during a door’s closing operation. Should anything break the beam during the closing operation – including adults, pets or other objects – the opener should automatically stop and reverse the closing operation.

Manual release disengages garage door in case of malfunction

One of the last safety features on a garage door system is the manual release mechanism. Designed to disengage the garage door from the opening system should entrapment, a power outage or other malfunction occur, the manual release mechanism is most commonly found on the track that runs from opener to the garage door. It’s usually a bright red handle that should hang no higher than 6 feet off the ground.

Should an object or individual become trapped, or if a malfunction occurs, pulling on the handle will allow the user to manually lift the door up or down. If a garage door is good working order, the spring system that runs across the top of the door opening should provide enough assistance so an average adult can lift the door with relatively little effort.

All three of these safety features should be occasionally tested to ensure they’re in working order. If any of the features fail to work as designed, call a garage door professional to repair or replace them.

Common problems with garage doors

Though some repairs could be made by the homeowner, the weight of the door makes it best to employ a highly rated garage door contractor, installer or repair company who has the equipment and is trained to make repairs safely.

To help prevent garage door problems from occurring, the Institute of Door Dealer Education and Accreditation recommends monthly maintenance, including testing that the garage door opener is operational and inspection of the springs, rollers, pulleys, cables and track. Wipe down the tracks, preferably with a microfiber cloth to prevent lint from being left behind. Also, make sure to keep all the metal moving parts lubricated. However, do not lubricate plastic parts. Never reuse an old track with new panels.

Here are some ways to troubleshoot common problems before calling in an expert for garage door repair.

1. The door closes only partially before returning to the open position.
If the light attached to the door opener mechanism blinks several times after the door reopens, this generally means something is blocking the sensors or that they've become misaligned.  The two sensors are generally clipped onto the door track about six inches from the floor. You can move them slightly with your hands to try to get them lined up.   Other possibilities include a broken cable that must be replaced, a track that is bent and needs to be replaced or a worn extension spring cable pulley that needs to be replaced.

2. The door is jammed shut
This can be the result of a broken cable, bent track or worn pulley.

3. The door opens more slowly than usual
This can be caused by a degraded, warped or broken spring that needs to be replaced.

4. The door makes a popping sound
This may be a sign of worn rollers that need to be replaced.

5. The door squeaks as it opens and closes
It’s likely the rollers and/or bearings need to be lubricated.

6. The door makes a scraping sound
Among the possible causes is a frayed cable that needs to be replaced or a misaligned reinforcement strut.

7. The door won’t open or close at all
If you have an automatic opener, first try replacing the batteries in the remote control. If that fails to do the trick, there may be a problem with the keypad or the programming.

8. The automatic garage door opens and closes by itself​
This is a less common problem, but if it happens to you, it's probably a fault in the circuit board, bad remote batteries or an interfering radio signal. Check your remote's batteries or change your code or frequency. If the problem continues, call a garage door repair professional to help troubleshoot the issue.

Garage door maintenance and repair

Like all mechanical systems, garage doors require regular maintenance and service to ensure they operate properly and with maximum safety and minimize garage door repairs. The U.S. CPSC recommends checking a garage door for proper operation every 30 days. Here are some other maintenance tips:

• Metal doors are far more resistant to dings and the elements than wood doors, but any door will deteriorate if not properly cared for.

• Inspect your garage door at least once a year for damage that might affect the finish or lead to rust.

• Wood doors should be refinished/resealed at least every two years.

• Protect any type of garage door from water, especially runoff and splash back from the roof eaves. Direct water away from the door, including proper drainage in front of the lower section of the door.

• Keep kids from using the door as a backstop.

• Wash your garage door regularly, with water and a mild detergent. Use car wax on metal doors to protect the finish.

• Check that the weather stripping along the bottom is in good condition. If it is cracked, it can easily be slid off and replaced.

• Lubricate the moving parts of a garage door, such as the hinges, rollers and springs, with a lubricant specifically designed for garage doors (available at any home improvement store). Don’t use petroleum-based lubricants. Apply and wipe away the extra. Openers do not require extra lubricant.

• Test the safety-reversing sensor once a month.

• Always refer to the owner’s manual for your door and opener.

Garage door companies do offer annual maintenance plans, and will come out, check your door, make sure it is lubricated and in good working order.

Two of the most common garage door components to degrade over time are the lift-assisting springs and the rollers in the track. Here a few simple steps to check your garage door’s springs and rollers:

1. With the garage door in the closed position, pull the manual disengage handle to release the door from the opener.

2. Using the garage door handle near the bottom of the door, lift the door manually. If the springs are functioning properly, it should take relatively little physical effort to lift the door.

3. The door should lift up evenly and smoothly up and down the roller tracks on either side. USE EXTREME CAUTION. If the door is extremely heavy to lift or doesn’t lift evenly, releasing the door could cause it to slam down, which could cause serious injury or damage.

Hiring a garage door professional

Choosing a local garage door professional to service, repair or install your garage door is little different than hiring any other home improvement contractor: Check references, make sure they have good reviews, check licenses and insurance, and ensure you read the contract thoroughly before you agree to any work.

One aspect of hiring a garage door professional that differs, however, is emergency service. If you need after-hours or weekend service for a damaged or malfunctioning garage door or opener, be sure to ask your garage door contractor upfront about emergency service call fees, which can cost hundreds more than regular services. Unless it’s absolutely necessary, you may save significant money by scheduling garage door repairs and services during normal business hours.

Join Angie's List to search for garage door installers in your geographic area who have received good reviews from other customers in your community.  You'll be able to sort the results by best score, proximity to your house or whether special deals are being offered during that time

Buying and installing a new garage door

In many homes, the original garage door was installed during construction of the garage and the builder may have chosen the least expensive model. Decades later, the homeowner may decide to upgrade to a higher quality door. While appearance and cost will likely be the biggest considerations for most homeowners, other factors such as insulation value, ease of operation and safety features should also be considered. A highly rated garage door installation professional can offer more detailed advice.

If you live in a hurricane-prone state such as Florida, wind resistance is another important factor to consider.


Wood was the first material used in the manufacturing of garage doors. This type of material is still one of the most desired by homeowners. Individuals will find that garage doors that are constructed from wood can be painted or stained to match their home’s look. However, without regular maintenance, wood is susceptible to rot, decay and insect infestation.

Homeowners who want a more decorative looking garage door for their home will find that many different styles of wood doors offer windows which are installed in them. Overall the decorative design that is desired will be the determining factor in the cost of wood garage door selections.


Steel garage doors are one of the most durable options that can be chosen for the home. These doors should carry at least a 24 gauge rating for strength.  Steel can be painted or purchased with a backed on finish that will complement the color scheme of a home’s exterior.  Steel garage doors can be good deterrents for would be thieves that want to gain access to the home through the garage.  Steel doors can be quite heavy due to the materials used to construct them.


Aluminum garage door styles are similar to steel doors except that they weigh much less.  This prevents them from providing a great deal of insulation and they do tend to dent easily.  However, Aluminum is one of the least expensive garage doors that can be purchased for the home, they have a long lasting finish that does not rust easily and it is available in a faux wood texture that can complement the home’s overall look.

Wood Composite

Individuals that want a garage door that has the look of wood but the strength of steel will find that the wood composite styles provide ideal results.  Garage doors that are manufactured from wood composite materials can be painted or stained to match the look of the home.

The recycled wood fibers used to create the wood composite garage doors are resistant to problems such as splitting, rotting and insect infestation.


Fiberglass garage door models are created by encasing aluminum frames with fiberglass panels.  These doors can be painted to match the home and are more resistant to dents and damage than some steel model garage door styles.  The fiberglass doors are lightweight making them easy to open and close.

The lightweight design also causes a decrease in the insulation of these doors, so individuals that live in colder climates may want to consider other options for their garage door needs.  Fiberglass does not corrode when subjected to salt-water like some other door styles out there.  Individuals that live in coastal areas will find this feature beneficial for their needs.


Vinyl constructed garage doors are designed from the same materials as siding and window casements that you see on many homes.  This is a material that is lightweight and easy to work with.  Homeowners will find that vinyl is available in a wide range of color selections that will match the look of their home.  Vinyl can crack and bend out of shape if not properly taken care of.


Depending on the brand and model, many garage doors come with varying degrees of insulation. For homes with attached garages, ensuring your garage door has adequate or more than adequate insulation can help prevent air intrusion into the home and lower overall heating and cooling costs.

Leave a Comment - 19


Ulyses Chu

Subject: garage door cable

our garage door cable snap out. The cable did not cut but snap out from its place. do you have a recommendation or advice that you can give on how to fix it.

Bill Krywko

Subject: Garage door opener

I have a Genie garage door opener which is giving me
problems, when it's open all the way up, when I go to close it the door still wants to open, then I have to keep reseting the power because it keeps want to close this can go on several times, then it will finally close, I tried to adjust the open and close knob, that doesn't help, I clean the electronic eyes, that's dosents work either. I'm lost any suggestions.
Thank you

Susan Meister

Subject: Garage door slammed to concrete and windows shattered

I have had a very strange experience. I left my cane at the side of the entryway into the garage. Minutes later, I hit the button to close the garage.

Grinding steel and glass from two panels came crashing down on the concrete floor.

I have sensors. Why did the automatic reversal FAIL to bring the door up with my cane in the way.

So dangerous as I have a Golden Retriever who could have been killed if he would have been in the path.

Beavercreek Garage Doors

Subject: garage door information

I have in stalled and serviced garage doors and openers for 41 years. This time has allowed me a bit of experience on the subject.
1. Insulated garage doors are designed for longevity and quietness. You will not recapture the increased cost of an insulatec door in energy savings.
2. Most non insulated doors on the market are 25 gauge steel. A few companies even have a 26 gauge door for sale in home improvement stores. A good door dealer will have 24 gauge doors. A home improvement store garage door utilize lighter duty hinges, rollers and what i feel is substandard spring systems. Springs are the hard part of a door installation. These doors use home owner friendly wi di g systems that dont have a very good life expectancy.


Subject: insullated garage doors

Have to disagree Angie on insulated overhead garage doors for attached garages. Unless your garage is totally insulated top to bottom, and you never ever open them, these are useless and much more expensive. Studies have shown (look at Consumer Guide and other consumer sites) that it would take many decades to realize savings if you open your doors. The temp in your garage drops to ambient air every time you open them. So for thousands more, go for insulated, but they also have a much lower warranty period, maybe 5-10 years at most, where a plain steel door usually has 20-life warranty. No, I do not work for a door company, but we are doing research to replace ours, and have found that steel is best with all reviews, and insulated is a waste of money. Plus if you get these in basic white, you can paint them yourself and save a bundle. Just sayin'...have to disagree with you on this one.

em scott

Subject: insulated garage doors

I have to disagree with your claim that insulated steel garage doors are a waste of money. I just replaced my (less than) 2 years old uninsulated tinny garage door with a steel insulated door. This is a "house attached" garage. The inside wall of the garage is outside a whole living room wall. A laundry room and a bathroom wrap around the end of the garage. The steel garage door dropped the temperature of the garage 15-20 degrees. That means a lot to me in dealing with the cost of air conditioning in my house. It, also, means a lot to me, since now I can go out in the garage and work in some degree of comfort. I can, also, get into my car and not have to have gloves on, to grip the steering wheel. (BTW, I couldn't store my car in the garage before I replaced the door. It was hotter in the garage than outside in the sun. )


Subject: Garage door

I live near Chicago.what r value should I look for and is steel door with insulation the the best and least maintenance?


Subject: failed to tell about service charges

I recently had overhead door out to look at a broken garage door. The service was fast. However, they failed to tell how much their service fee was on the phone. They also failed to tell me they had a service fee. It maybe common practice for companies to have service fees, but failing to tell a customer about their fee is negligence. What is more the service man did not actually do anything but tell me my garage door was busted.


Subject: common courtesy

What you say makes sense, as a common courtesy they should have mentioned the service charge on the phone. But once you have dealt with a few of these home service people, you learn and ask the question up front. No doubt there are some local servicemen in your neighborhood that will do it for free!

The Judge

Subject: Garage door repair

Let me see if I understand what your saying. You expected some one who was in business to earn a living to send an insured employee who worked for him, for the purpose of earning an income, to drive an insured vehicle that burns very expensive fuel, to come to your home to diagnose your problem for free.
Is that about right?


Subject: Garage Door Spring Broke

Spring on garage door broke, and i need it repair,
i'm not sure how to fix it. Can you recommend a
good/inexpensive repair person (Parlier, CA area)

tony maynard

Subject: pulley and spring broke

I am a self employed garage door expert in search of new clients. if you have not yet resolved your issue, please allow me to help. thank you.

deborah r threeths

Subject: door opener

remote missing, If I buy a door remote door opener can you set it just by looking at the door opener unit ? It’s a old sears model.


Subject: Remote issue

It depends on the make/model. The older remotes/openers were programmed with a 9 or twelve digit code set with dipswitches that need to be matched between the remote and opener, or in some cases a receiver box on the wall. The more modern openers have a smart code button. You press the button on the opener unit and then press the button in the remote within 30 seconds. Typically on the third try the door will start moving. Hope this is helpful.

deborah r threeths

Subject: remote missing

remote missing, If I buy a door remote door opener can you set it just by looking at the door opener unit ? It’s a old sears model.

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