Another moment of truth arrives as the winding-up of the springs begins. (I am just posing here with the camera held out in my left hand. Except for lifting the door onto the scale, this was a one-man job, including the photography.) The position of the bars in this photo was necessary to take the photo, and does not show a correct winding technique, You should not have to swing the bar up as high over the top as shown. The lower bar during winding should swing from pointing down to pointing a little past horizontal. Then you hold that bar horizontal while socketing the other bar pointing down, apply force to that (now) lower bar, then remove the (now) upper bar, wind one-quarter turn, and repeat.
With over 300 independently moving parts, your garage door is a deceptively complex piece of equipment. To help prevent malfunctions and break-downs, it is a good idea to occasionally perform a garage door tune-up to keep all of these parts in good working order. A regular tune-up service by a Sears professional can prevent unexpected door problems and prolong the life of your existing equipment.
Spring Issues - Unless it is due to an obstruction of some type, uneven movement of your garage door is likely caused by a problem with the spring mechanism. Roll-up doors generally have one center-mounted torsion spring. The tension on torsion springs is great. Therefore, it is necessary to call a professional for any repairs to this type of spring mechanism to avoid serious injury. Because replacement of these springs or cables in a garage door can take at least two or three hours of labor, costs can average $300 or more.
With hundreds of moving parts that are all required to work together, it's no surprise that garage doors may need occasional repair and maintenance. Garage door repair services are also required in emergency situations, like when the garage door won't operate and the car is trapped inside or you've accidentally backed into the door when it was closed. Whether it's a specific repair of your garage door opener, a broken spring that needs to be replaced, or a bent or rusted track, The Home Depot's local, licensed service providers can get the job done quickly and efficiently.
Security Lights: Most newer garage door openers have at least two bright light bulbs, as well as lights activated by motion. On the other hand, some older or cheaper openers are limited to a single light bulb. This doesn't help much with a garage darkened by shadows, leaving you unsure if the rustling in the corner is your cat … or a skunk that snuck into the garage.
​We know that your commercial ​door can take a beating. That's why we build quality, tough commercial doors to withstand the daily wear and tear of owning and operating a business. Engineered for excellence and backed by a dedicated nationwide network of Red Ribbon Distributors, Overhead Door™ commercial and industrial doors are the premier choice for durability, serviceability and hassle-free performance. ​​​​

Capable of lifting a seven-foot garage door up to 500 pounds in weight, the SilentMax 750 comes with a number of convenience features for automatic and remote use. The included wireless keypad and dual remote controls will ​insure that you are the only one that has access to the door. Compatible with a number of in-car remote systems like HomeLink, you can also keep the remotes at home if you are worried about losing the “keys.”​
Here are the new replacement springs I ordered from a distributor, which I found using a Google search for "garage door supply" (search that phrase now). You certainly won't find these at Home Depot or Lowe's (although last I checked Lowe's does carry the less daunting extension spring replacements). I also have a list of some suppliers at the end of this page.
Garage door openers manufactured and installed in the United States since 1982 are required to provide a quick-release mechanism on the trolley that allows for the garage door to be disconnected from the garage door opener in the event of entrapment. [8] Garage door openers manufactured since 1982 are also required to reverse the garage door if it strikes a solid object.[9][10]
Give your garage a great look with garage doors from Menards®. Menards® has all the supplies, tools, and accessories you need to install a stylish new garage door. Choose the perfect door from our selection of residential and commercial garage doors as well as roll-up doors for storage sheds. At Menards®, you will find a wide variety of door sizes ranging from 4 feet to 9 feet wide, 10 feet to 16 feet wide, and over 16 feet wide. Because of the layer of insulation, insulated garage doors are generally quieter than noninsulated doors. Insulated doors also offer improved energy efficiency, so you can stay comfortable while working in the garage no matter what the weather's like outside.
Our team of 100-plus technicians and service representatives takes care of you every step along the way. Our technicians are the best in the area. They’ll provide expert guidance as you consider your options, and then top-notch service to complete the repairs. When you want Cincinnati or Northern Kentucky garage door repair you can trust, choose AE Door & Window.
In the market for overhead garage doors? Browse our selection of Pella garage doors. You'll find many options for single garage doors, double garage doors, insulated garage doors and even roll up garage doors. Lowe’s also carries garage door screens—great for those who love to spend hours in the garage, but don’t want to deal with the bugs and pests that invite themselves in. We also carry garage door hardware, garage door springs, garage door decorative hardware and garage door sensors, and don’t forget to ask about our garage door installation and garage door opener installation. Once you've decided a garage door fits your home, you'll need to find the garage door opener that works best for you. At Lowe’s, we carry Genie garage door openers, Chamberlain garage door openers and SOMMER garage door openers that will work seamlessly with your garage doors. We now offer a garage door opener that's compatible with your Iris home automation system, too. Whether you prefer opening your garage with a garage door remote or garage door keypad, you'll find it at Lowe’s. Our selection of garage remotes includes everything from universal garage door remotes to specific brands like Chamberlain garage door opener remotes and Chamberlain garage door keypads. We also carry backup batteries, nylon garage door rollers, garage door parts, garage door opener parts and rail extensions to make sure your garage door is in good working order. Plus, we even offer garage door installations services, which include garage door spring repair and replacements, and garage door cable repair and replacements. We can also replace your garage door weather seal, also known as garage door threshold seals, and install a new garage door opener battery.
Chris was very professional & thorough. He arrived on time & was able to answer all questions that I had. I was extremely satisfied with the quality of the work he performed. I spoke several times on the phone with Mrs. Carol who keep me informed prior to, during, and after the installation of my garage door. She was very professional, easy to talk with and resolved any misunderstanding that I had.
Manufacturers and distributors of torsion springs believe they are better off not retailing their product directly to the public. They believe they are maintaining higher prices for their product by restricting sales "to the trade." One brochure for parts even flatly stated, "We do not sell to the end user. We protect our dealers," which would seem to be prima facie evidence of an illegal restraint-of-trade scheme. But this is an old story which is true of virtually every product and service, going back to medieval guilds and before.

They sent Doug Fussell out to my house on the day after Christmas! I had only called them three days before! Doug was a premier technician, very thorough and very efficient. I expected him to take two days, since he was replacing two doors and adding openers on each door. He only took the daylight hours of one day! I could not believe how fast he was! In addition, he thoroughly taught me how to use the remote openers. I highly recommend them to anyone!
Scott did an amazing job. Your customer service team is excellent. I emailed late on Thanksgiving night my request for service. Your team called my house within 30 minutes and set up an appointment for the following morning. Scott came out and was great. I had purchased the lifetime warranty package with Precision before, and your team delivered. I highly recommend anyone getting a repair to purchase the lifetime warranty package since your team stands behind your product. Rarely do I write reviews - but am happy to share great information on great companies. Thanks for the great service!
Drive type Garage door openers work in a variety of ways. A chain-drive model raises and lowers doors with a metal chain — these tend to be inexpensive and able to handle heavier doors, but they’re loud. A belt-drive opener uses a belt and operates more smoothly and quietly. Screw-drive openers, which lift doors with a threaded steel rod, are also quiet and don’t require much maintenance. Finally, a direct-drive opener operates as a single unit — the whole contraption moves to lift the door. These tend to be the quietest, smoothest mechanisms available.
If your garage door's spring breaks, stops working properly, or snaps, you'll lose the ability to open and close your garage door. This could happen due to a variety of issues, like normal wear and tear or from extreme temperature changes in a short amount of time. Spring replacements require a quick response from a garage door provider near you. Contact The Home Depot and a local, background-checked technician will respond within 24 hours.
Loosening or tightening the set-screws is the moment of most risk, since the end-wrench is a potential missile if you slip, and your hand is close to the cone. When the wrench is removed and only the rods are in place, it would seem that the worst that could happen is that the rod is flung out and the captive spring and cone rattle around, assuming you are keeping yourself clear of the rod's radial disk of rotation, and not leaning on the rod such as to fall into the apparatus were the rod to slip out of your grasp. The torsion shaft design has the virtue of capturing the mass of the spring and cones reliably on the shaft, preventing these parts from launching themselves as projectiles, even in an accident.
Correct spring size is determined by factors such as the weight and height of the door. You cannot substitute a different spring and just tighten or loosen the winding to make it balance the load. Why? To maintain cable tension under all operating conditions, the spring must retain about one turn of unspent wind-up at the top-of-travel position, which with the lift drum size and door height predetermines the number of turns of winding at the bottom-of-travel; and furthermore the torsion of the fully-wound spring at the bottom-of-travel must be slightly less than that needed to lift the weight of the door when translated by the lift drums.
The electric overhead garage door opener was invented by C.G. Johnson in 1926 in Hartford City, Indiana.[1] Electric Garage Door openers did not become popular until Era Meter Company of Chicago offered one after World War II where the overhead garage door could be opened via a key pad located on a post at the end of the driveway or a switch inside the garage.[2]

Versatile. That’s one way to describe our products. A total, one-stop solution that meets your every upward-acting-door need. Featuring premium materials, superior craftsmanship and innovative functions, our products continue to lead the industry, underscoring a legacy of quality, expertise and integrity.  This history ensures that you are making a good investment in your home with a quality product. In fact, according to the latest  Cost vs. Value Report by Remodeling Magazine, replacing a basic garage door with an upgraded one returned up to 85%​ on original cost on average – making it one of the top renovations in the study.
R-value describes the power of the insulation in your door. The higher the r-value, the stronger the insulation. Those doors will have better energy efficiency than doors that have a low r-value. Basic doors have an r-value of 0.0 with no insulation. The first step up gives you 1-3/8” insulation at a 6.5 rating. Next, a 1-3/8” thickness with Intellicore has a 12.9 r-value. The best option on the market is the 18.4 r-value, which has 2” Intellicore insulation.
With all the styles offered by Clopay®, many homeowners fall in love with multiple doors. To help you choose the best garage door for your home, Clopay® has developed a comprehensive buying guide, outlining styles, construction materials, insulation, wind resistance, automatic garage door openers and more. We also allow you to view different door styles on your home with our Door Imagination System. Simply upload your home or choose from a variety of sample homes with one-car, two-car, and three-car garages to design the best garage door for your home.
Single panel doors are constructed from one monolithic panel. From the closed position a single panel door swings up and overhead with a hinge on each side (known as jamb type hardware) to the fully open position. A disadvantage of monolithic panel doors is that the swing up arc of the door occurs partially outside the garage. This means a vehicle must stop and park several feet in front of the door to avoid being hit by the garage door when it is opened.
Most wood doors are sectional roll-up doors, though a swing-up wood door that’s meant to be painted can be affordably built in the driveway from a wood framework and plywood. Custom wood doors are typically made of durable softwoods such as Douglas fir, cedar, redwood or cypress, or from hardwoods such as oak or mahogany. Appearance-grade hardwoods are relatively expensive.
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.
Depending on the type and location of the damage you might have an alternative to replacing panels, or entire garage doors. One solution to give new life to your garage door is repair. Small dents, rot, rust or holes can be repair without replacing. Depending on what wrong with the panel, average prices for repair are $130 for steel door repairs, $190 for wood, $170 for aluminum and $150 for fiberglass. Garage door panel repair can save homeowners money, but should be weighed against garage door panel replacment.

Since 1975, Kitsap Garage door has provided Kitsap Penninsula with reliable, comprehensive and responsive residential and commercial garage door repair, maintenance and installation services. At Kitsap Garage Door, our primary focus is offering Bremerton, Shelton and Kitsap, WA, home and business owners with the highest quality products and services, as well as exceptional customer experiences marked with free service estimates, workmanship warranties, reliable support and emergency services.

Sears garage repair technicians are fast, with same-day, emergency repairs available in most areas. We can replace garage door broken springs, rollers, cables, hinges, sensors and weather seals. We can also adjust garage door tracks and springs to make sure your door operates smoothly. Having problems with your garage door opener? We can repair or replace that too. Check out our line of Craftsman Garage Door Openers. Craftsman is America’s #1 brand of garage door openers! 1
One of these "sproing" events at our house finally motivated me to research how these repairs are done. This happened in 2002, when my wife parked the chariot and shut the door. After the door closed, there was a horrific noise that she could only astutely describe as, "a big spring snapping and vibrating". Although I have hired professionals several times in the past to install or repair garage doors, the difference this time was the innovation of Google and newsgroups like alt.home.repair. I was determined to learn the process and to search for online parts vendors.
Clearly there is a lot going on with your garage door and it takes trained and qualified experts to properly install, maintain, repair, and replace them. The experts and On Track Garage Door Services have the tools, skills, training to get your garage door fixed the first time. In addition we can help you fix your garage door affordably and offer many options from your basic garage door to custom wood styles. To find out how much your garage door repair will cost, give us a call at 480-641-2301 or use our Contact Page.
The not-so-competitive advertising trick: How about this racket: We have all heard how you should get at least three bids for any home improvement jobs, right? In some areas the largest ads in the yellow pages are from a single business using various names and phone numbers, masquerading as independent competitors. When you call asking for prices, "they" all quote you very high numbers. You are tricked into thinking you have shopped around for the prevailing price. (The more modern version of this is multiple Web sites that all direct you to call the same person.) If you've ever had to call a plumber you may have unknowingly been a victim of a similar trick.
One might stack lumber or arrange some other low platform for a steady footing, instead of the ladder. The aluminum ladder shown here is the splendid 16-foot Krause Multimatic, which carries a Type 1A Industrial rating (300 pound working load); I highly recommend it. However, product liability apparently forced this company into bankruptcy in September 2000 and the company ceased operations in June 2001; see http://www.krauseladders.com (this Web site went dead sometime in mid-2002). The world is a dangerous place.
Nate was very polite and knowledgeable about our garage door dilemma. He was prompt and earlier than the appointed time. He phoned ahead to alert us of his approximate arrival. He assessed the situation and gave us options to choose from. He educated us about our type of garage door and the opener that is typically used with it. He basically did an overall replacement of all moving parts, (spring, cables, bearings etc..). He made sure that the opener wasn’t damaged in any way from the broken spring on the garage door. He was finished within the hour. Everything works great and we are now able to get our vehicles out. When the spring breaks on your garage door, there is no way you can lift this door. It was a little expensive but at least we didn’t have to buy an entire door assembly.read more
Tools in Action says the Ryobi Ultra Quiet has plenty of versatility, as you can plug devices into the opener hardware, like a Bluetooth speaker, a fan, or even an 18V Ryobi cordless tool battery. When the opener has power, it will charge the battery. But if your home ever loses power, the 18V battery works as a backup to the garage door opener, allowing it to operate normally.
When I called to schedule the repair service, I was transferrd 5 times and spoke with 6 service reps. Each rep was very confused by my request to get my garage door repaired. One rep actually told me that Sears doesn't repair garage doors. I had to tell her that Sears installed the door. When I finally found a rep who could schedule my service, it took one week for the appointment.
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Thank you for visiting Precision Garage Door Service of Seattle. We specialize in the repair of residential garage doors, openers, sales, service, & installation. Where ever you live along the Wasatch front, You have my personal guarantee that your experience with us will be professionally handled from start to finish. Your service will be provided by qualified & certified technicians that have completed the most extensive & rigorous training in the industry. We are proud of our environmentally sensitive business practices. Please give us a call to discuss your specific needs. We look forward to serving you.

The Keychain Garage Door Remote offers portable control The Keychain Garage Door Remote offers portable control with the highest level of security. Featuring a three-button design this compact remote controls up to three garage door openers individually. Easily programmed and compatible with nearly every garage door opener made by Chamberlain LiftMaster and Craftsman it’s the easy option for ...  More + Product Details Close
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.

If your door has two springs, most professionals and research online says that replacing both springs is the best option. Most torsion springs are rated for 10,000 close/open cycles. If only one of your springs is broken, both springs are still recommended to be replaced. Considering that your second spring will break soon anyways, this added on fix is only going to cost you about $50 extra to assure that you don't have to pay another service fee for a second visit.
The third stage of garage door opener technology uses a frequency spectrum range between 300-400 MHz and rolling code (code hopping) technology to defeat code grabbers. In addition to transmitting a unique identifier for the remote control, a sequence number and an encrypted message are also sent. Although an intruder could still capture the code used to open a garage door, the sequence number immediately expires, so retransmitting the code later would not open the garage door. The encryption makes it extremely difficult for an intruder to forge a message with the next sequence number that would open the door. Some rolling code systems are more involved than others. Because there is a high probability that someone will push the remote's button while not in range and thus advance the sequence number, the receiver does not insist the sequence number increase by exactly one; it will accept a sequence number that falls within a narrow window or two successive sequence numbers in a much wider window. Rolling code technology is also used on car remote controls and with some internet protocols for secure sites.
Before purchasing a roll-up door, measure the space between the top of the garage door opening and the ceiling or overhead framing. Standard tracks require headroom of about 14 inches. If you don’t have that, you can get low-headroom track, which costs about $100 more. There are also tracks specially made for garages with unusually high walls or cathedral ceilings.
This opener is easy to install for most DIYers and comes with two remotes and a wireless keypad so you can open the door with a pin. If you are interested in having this smart-enabled you can purchase a separate kit to do so. The Safe-T Beam helps prevent accidents using a infrared beam that will open or close the door if a car is getting to close. 
Because your garage door can be customized, pricing varies. Our Clopay configurator will help you review pricing as you begin your project. You’ll start with your door size and whether you need a single or double car door. Next, you can choose the collection of door, which gives you options of various materials and styles. Then, you’ll choose your construction, which allows you to decide what you need in terms of energy efficiency, durability and noise control. Lastly, you will be able to visualize the design and see an end price. Other optional add-ons include windows, decorative hardware, smart features and the r-value. However, you do not have to use the configurator. We also install standard garage doors that have not been customized so you know the product price early on in the process.
Garage doors are usually located in the home exteriors. As a result, they are directly impacted by the forces of nature causing damage and deterioration of the doors over a period of time. We are specialists of garage doors and know how to handle damaged garage doors in the best possible manner. Professionals in our team have complete knowledge on repair of garage doors and they implement the same in providing the best services to our customers in San Antonio and surrounding areas. We can assure of fixing your garage door problems promptly and that too at the most affordable rates!
Drive type Garage door openers work in a variety of ways. A chain-drive model raises and lowers doors with a metal chain — these tend to be inexpensive and able to handle heavier doors, but they’re loud. A belt-drive opener uses a belt and operates more smoothly and quietly. Screw-drive openers, which lift doors with a threaded steel rod, are also quiet and don’t require much maintenance. Finally, a direct-drive opener operates as a single unit — the whole contraption moves to lift the door. These tend to be the quietest, smoothest mechanisms available.
The Certified Technician, Rey Lopez, was competent, professional, polite, and willing to work. He quickly removed the old door and installed the new one. He then explained the vast differences between what we originally had and what we'd just purchased (stronger spring/tension rates; increased viability of door opening/closing life; beefier hardware; plastic vs. nylon rollers; stronger door reinforcement). Ray performed with alacrity his tasks and then demonstrated the quiet, solid way the door retracted--no banging after the initial rise from the ground. Finally, his attention to detail was so precise that he enabled another remote controlling all three doors, plus he capped some frayed wires, thus solving the problem of why the door opened intermittently. I would rate him a "6" on a scale of "1-5", meaning he went above and beyond our expectations. His "can do" attitude, coupled with the deference he showed, will take him a long, long way. May HaShem richly bless him in his endeavors!read more
We want to serve you not only today, but also in the years ahead. To do that, we make sure that we provide prompt, professional, well-trained technicians that efficiently get the job done right the first time. We take pride in doing everything possible to eliminate warranty issues and to ensure that our clients are thoroughly pleased and return to us for all garage door needs.
The deluxe-model upsell trick: Don't you want the best? Don't you want to protect your family? Galvanized springs may be offered to you at extra expense as "longer lasting". Although bare springs (also called "oil tempered") can develop a light film of rust, the eventual failure is due to fatigue and not corrosion. The use of coated springs (whether galvanized, painted, powder-coated, or surface-converted) is mostly about appearance: the customer likes his new door to look shiny, and the customer doesn't like repair parts that show superficial rust from storage.
Door repair business advice (warning to consumers, you are not allowed to know this): Thinner wire is excellent for shortening spring lifetimes, lightening your inventory on a service truck, and getting paid for frequent service calls. This is why your industry chooses to set "standard" springs to have thin wire and despicably short lifetimes. If you want to maximize profits and fleece your customers, install springs that predictably break in about 7 years on a door that should last decades, even though it is just as easy for you to install slightly more expensive springs that should last the life of the door. Remember that the customer wanted the cheapest price, so you need not feel any guilt about this low-balling.
The replacement springs in my case proved to be 0.2253 wire size, 2.0 inch (inside) diameter, and 24 inches long, in a pair of one left- and one right-hand winding. Actually, the old springs in these pictures were a slightly smaller size, but another similar door on this garage was better balanced by that size. Whoever installed the old springs didn't quite get the weight and size just right; it is not unusual to find a repair service installing a slightly off-balance spring size that happened to already be on the truck during the service call. My electric opener had no trouble handling the small imbalance. But since it is safer to reduce the electric operating force as much as possible through careful balancing, I chose the size that was working better on the other door. The Chamberlain brand electric openers (also sold by Sears) I have incorporate a plastic worm gear that tends to wear out after some years of use, requiring a disassembly and installation of a $20 repair kit; this wear is minimized by a properly balanced door.
However, in addition to potentially causing injuries to the under-prepared DIYer, a malfunctioning door can become a safety hazard to you and your family. Keep in mind, according to the National Electronic Injury Surveillance System (NEISS), over 13000 people checked into hospitals with garage related injuries in the United States in 2007. You don’t want to turn a loved one into a statistic just to save a few dollars!
The Heavy Duty Chain Extension Kit for 8 The Heavy Duty Chain Extension Kit for 8 ft. High Garage Doors is required for reliable everyday operation of Chamberlain heavy duty chain drive models in 8 ft. garage door applications. Featuring a quick-install extension rail and replacement chain the kit includes everything needed for quick and easy installation. Includes ...  More + Product Details Close

Squealing, screeching, or grinding noises from your garage door are usually indicative of a lack of lubricant or an accumulation of dirt or debris in the tracks. When removing debris, do not use harsh chemicals to clean the tracks. Once the track is clean, coat it with lubricant designed especially for garage doors, if possible. If you do not have access to this special type of lubricant, you can use WD-40 on the tracks and hardware.


I repeat my caution about the uncertainty of interpreting color codes. A professional installer reading this page emailed me to say that the red color indicates the springs are right-hand windings, not the DASMA color code for the wire size. But this photo shows both a right- and a left-hand spring, and both have the red paint on the cones and set-screws. I conclude it is prudent to make your own measurements and analysis. Do not rely on the colors on old installations. The only time I would respect them would be on new parts that carried documentation giving the code.


Welcome to Jarusewski’s Overhead Door Service Inc. We are a locally owned company that has been providing the Carlisle, PA area with garage door sales and service since 1988. We specialize in installation, repair and maintenance of residential and commercial garage doors. Our garage doors are reliable, affordable and most importantly safe.We know a great garage door installation is nothing unless you have a great garage door to install. That’s why we feature the best brands when it comes to garage doors and garage door openers. We feature doors by Clopay, as well as, door openers by Chamberlain and LiftMaster Professional.

To estimate the maximum physical force required to wind these springs, consider that they are balancing the weight of the door with a torque applied to a lift drum on each end of the torsion shaft. The lift drums have a 2-inch radius, which is the standard residential size, and corresponds conveniently to about a 1-foot circumference. If we pessimistically assume the 10-by-7-foot door has a weight of 350 pounds, this implies a torque of 350 pounds on a 2-inch radius, that is, 700 inch-pounds, or 58 foot-pounds. Each of the two springs should be exerting slightly less than half of the balancing torque, or 29 foot-pounds. Compare this to, say, the bolts in an automobile, which are typically torqued to values of about 50 foot-pounds, or tire lug nuts, which may be torqued to well over 100 foot-pounds.
You can choose from three basic types of steel door: (1) steel only; (2) steel with insulation on the inside; and (3) steel on both sides with 1-3/8 to 2 in. of insulation. Other features that add to the cost are thicker insulation and windows, especially insulated windows. The do-it-yourself tensioning systems also add a little to the door’s cost. Be sure to specify exactly what you want.
Fortunately, owners aren't bashful about weighing in on their garage door openers. Though some models get only a handful of reviews others receive hundreds of unique ratings on sites such as Amazon, Home Depot and Lowe's. If you are interested in a Craftsman garage door opener, Sears is the place to visit. While our research reveals that no garage door opener is perfect, several models jump to the fore as offering good performance and good value in the eyes of owners. These are the openers that we've named Best Reviewed for this edition of our report.
Some garage door openers are compatible with HomeLink, a remote control technology that's built into some automobiles. However, due to a technology change, many older HomeLink-equipped cars are not compatible with new HomeLink-enabled garage door openers without the purchase of an optional interface; you can also simply ignore your car's built in controls in favor of the remote control that comes with the opener, but that's a solution that seems to annoy owners.
Roller doors ("Sheet Doors"-USA) are usually constructed of corrugated steel. They evolved from cover window and door coverings.[4] Other materials can be used (e.g.; transparent corrugated fibreglass) where strong impact resistance is not required. Corrugations give the door strength against impacts. A typical single car garage roller door has a preloaded spring inside the rolling mechanism. The spring reduces the effort required to open the door. Larger roller doors in commercial premises are not sprung (except USA) and use a manual pulley and chain system or a geared motor to raise and lower (roll up and roll down) the door. Roller doors cannot be effectively insulated.
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