Speed of a falling door:: Physics tells us that the transit time of a free-falling body is sqrt(2x/g), where x is the length of the fall and g is the acceleration due to gravity (32.2 ft/sec^2). If this typical 150 lb door were to fall an equivalent of 3.75 feet, this falling time would be sqrt(2*3.75/32.2) = 0.48 seconds (480 milliseconds). The terminal velocity is gt, or 0.48 seconds * 32.2 ft/sec^2 = 15.5 ft/sec = 10.6 mph.

A standard residential door raises 7.5 feet, but since the door goes horizontal this is equivalent to raising the whole door for half that distance, or about 3.75 feet. So if the door weighs, say, 150 lbs, then the energy supplied by the springs is 3.75 * 150, or about 563 foot-pounds. This is like throwing a 50-lb sack of cement up a 11-foot flight of stairs. Or catching a 50-lb sack of cement dropped from 11 feet up.
Finally, one of the most important garage door innovations over the years in increased child safety features. Sensors can detect when a child or pet is crossing the threshold while the door is closing, prompting it to stop immediately. Furthermore, doors can also sense when something is being pressed by the door, causing it to stop before inflicting a brutal crushing injury.
Keep in mind that when the springs are released there is nothing to help with weight replacement. Garage doors weigh 150 pounds or more and if the door were not locked in place, there would need to be some way of holding it up until it can be lower manually. If no one is available to help, a clamp can be put on the track at the end of the door (Image 1). When ready, release the clamp and take the weight of the door.
The Genie Chain Drive garage door opener combines The Genie Chain Drive garage door opener combines powerful reliable performance with smooth operation to create a long-lasting and easy-to-install garage door opener. The unit's electronic push-button programming makes installation and setup fast and easy. Complete with accessories the system features a reliable DC motor that delivers quiet smooth operation ...  More + Product Details Close

You may enter your information on this website, visit an in store associate or call our garage door repair team at the number at the top of this page. Within 24 hours you will receive a call from a local service provider to discuss your requested service. Afterwards, you will schedule a date and time for the service provider to come to your property.
Charlotte, NC is  a bustling market for new homes, business construction and restoring old homes.  Charlotte’s real estate market is booming. Our company has been a part of this growth by installing and repairing over 50,000 garage doors since 2001. In this span of time, we have had no issues with the county inspections office. We have done this by making sure that our clients buy the right doors, and have permits in place, if needed. Keep in mind that we are not general contractors, so we do not supply permits, but we provide the information and resources for you to easily apply for permits if one is needed for your project.
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The "liability" angle: The flip side of "safety issue" is "liability". This is not used to directly sell you something; it is used to demean the cheaper alternative and prod you into buying a more expensive (and profitable) option. For example, you may be pressured into buying a whole new door, when you just need a new spring, by the salesman telling you he can't just replace the spring due to "liability" issues. Since product liability is a big burden on the garage door industry, and so many old doors (and especially automatic openers) are dangerous, this may be a genuine reason to accept a higher price.
Home Depot local Service Providers are background checked, insured, licensed and/or registered. License or registration numbers held by or on behalf of Home Depot U.S.A., Inc. are available at homedepot.com/licensenumbers or at the Special Services Desk in The Home Depot store. State specific licensing information includes: AL 51289, 1924; AK 25084; AZ ROC252435, ROC092581; AR 228160518; CA 602331; CT HIC.533772; DC 420214000109, 410517000372; FL CRC046858, CGC1514813; GA RBCO005730, GCCO005540; HI CT-22120; ID RCE-19683; IA C091302; LA 43960, 557308, 883162; MD 85434, 42144; MA 112785, CS-107774; MI 2101089942, 2102119069; MN BC147263; MS 22222-MC; MT 37730; NE 26085; NV 38686; NJ 13VH09277500; NM 86302; NC 31521; ND 29073; OR 95843; The Home Depot U.S.A., Inc. is a Registered General Contractor in Rhode Island and its Registration Number is 9480; SC GLG110120; TN 47781; UT 286936-5501; VA 2705-068841; WA HOMED088RH; WV WV036104; WI 1046796.
We also have a wide range of expertise repairing and installing both residential and commercial doors, meaning we can tackle any problem, large or small. We carry a wide range of doors from one of the industry’s leading manufacturers, Clopay, so you can make the choice that makes the most sense for your home and family while feeling confident that you are getting a door of the highest quality.
The Genie Chain Drive garage door opener combines The Genie Chain Drive garage door opener combines powerful reliable performance with smooth operation to create a long-lasting and easy-to-install garage door opener. The unit's electronic push-button programming makes installation and setup fast and easy. Complete with accessories the system features a reliable DC motor that delivers quiet smooth operation ...  More + Product Details Close
Repair Sagging Garage Doors – As doors and homes age, they can shift and move and sometimes this results in a garage door that needs to be realigned or reinforced. We will send a technician to your home to adjust the doors and to inspect the entire opening to make sure the door isn’t damaged. Once we understand the problem, we will fix the needed parts and make any adjustments to the door.
In order for you to find the right style door for your home, you need a tool that allows you to try out available options on a picture that approximates the look of your home. Using the Precision Door Designer, you'll easily create combinations of color, panel design and windows options that quickly educate you about the right style door for your home

With more than 43 years of experience, Kitsap Garage Door is the trusted source for garage door and opener installation for home and business owners throughout the Kitsap, WA, area. We can dependably and expertly handle all of your garage door installation, maintenance or repair needs, and we offer a large selection of the most trusted and top-rated garage door brands and accessories available today. We’re proud to exclusively install Clopay garage doors and LiftMaster garage door openers.


Insulation increases the efficiency of your door and can lower your electric will. You need R-value garage doors. These type of doors keep out hot and cold air and also provide a sound barrier between the outside and your garage. Insulated doors use polyurethane or polystyrene foam as insulation inside the door. More information about garage door replacement cost.
A typical version of an overhead garage door used in the past would have been built as a one-piece panel.[1] The panel was mounted on each side with unequal parallelogram style hinge lifting mechanism. Newer versions of overhead garage doors are now generally built from several panels hinged together that roll along a system of tracks guided by rollers.[1] The weight of the door may be 400 lb (181.4 kg) or more, but is balanced by either a torsion spring system or a pair of extension springs.[2] A remote controlled motorized mechanism for opening garage doors adds convenience, safety, and security.[3]
We specialize in garage door Spring Replacements. Broken Garage Door Springs (Extension and Torsion) can be repaired on the spot. J&S Overhead Garage Door Service will replace your broken garage springs today. We use only the highest quality garage door parts available. Our Extension Springs and Torsion springs are designed to last longer than standard residential springs.
Some of the best garage door openers offer special features like a backup power source or a timer that automatically closes the door behind you at a predetermined time. While the door openers we reviewed vary in terms of power, noise and efficiency, they are all effective in the all-important task of letting you come and go with the simple push of a button. Here are the criteria we used to rank the top garage door openers:
Another recent innovation in the garage door opener is a fingerprint-based wireless keypad. This unit attaches to the outside of the garage door on the jamb and allows users to open and close their doors with the press of a finger, rather than creating a personal identification number (PIN). This is especially helpful for families with children who may forget a code and are latchkey kids.
Now 13 pounds of force must be respected when backed by many hundreds of foot-pounds of stored energy, waiting to be released. Holding this torque is equivalent to stalling a 3 horsepower DC motor. But holding and turning these handles does not require extraordinary human strength. Note that this maximum tangential force depends only on the weight of the door, and the radius of the drums, and is divided by the number of springs (some designs have only one longer spring, as mine did originally, instead of two shorter ones). Higher or lower lift distances imply more or less turns to wind the spring (and thus a different spring geometry), but not more force on each turn.
It's a great idea to hire a professional to do your garage door opener installation for a few reasons. First of all, a pro can often be the most time-efficient way to handle the garage door opener installation, because a pro will have the right tools and experience to make your garage door opener installation as swift and smooth as possible. Secondly, a pro garage door opener installation will include making sure all the required garage door opener mounts and sensors are put together properly. A great garage door opener installation will include using the manufacturer’s recommended method of assembly and optimal placement of the garage door opener mount and sensors. Find top-notch garage door opener installation pros on Amazon Home Services and you'll see professional garage door opener installation services at competitive prices. Secure convenience and peace of mind by getting a professional garage door opener installation for your home. You'll never regret adding a garage door opener installation project to your to-do list. If you’re the kind of person who doesn’t have the time or patience to do your garage door opener installation, don’t worry. Because you don’t have to if you don’t want to. Amazon Home Services has you covered, to do your garage door opener installation quickly and professionally. Just schedule the garage door opener installation pro of your choice from our list of top-rated service providers.
In 1921, C.G Johnson invented the upward-acting garage door and revolutionized the way the world entered their homes. For more than 97 years, Overhead Door™ garage doors have been securing and providing families access to their homes. Overhead Door™ garage doors are assembled in the United States and sold at over 450 authorized Ribbon Distributors throughout North America. The Overhead Door™ brand and Overhead Door™ distributors are synonymous with quality and dependability. To ensure you are getting the genuine, the original, make sure to always look for the Red Ribbon.
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