Cycle lifetime unchanged by diameter-versus-length tradeoffs: Since the material stress (and thus cycle lifetime) for equal torques varies only with d, and not D or N, trading coil diameter (D) for spring length (N) in this fashion has no effect on cycle lifetime. Long and skinny, versus shorter and fatter, they'll wear the same if they have the same wire size and diameter-length product. The game of life is all about wire size when it comes to springs (see below).
The parts, parts, parts trick: You might be told you need new rollers, cables, drums, bearings, etc., when you don't, or at highly inflated prices. Good questions to ask when first calling for service include, "How do I know you will only charge me for the parts I actually need?", and "If you don't have all the parts I need, what will you charge me to come back?"
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.

Our business believes in high quality, expedient service. We don’t want to keep you waiting for parts, so that’s why we have a huge inventory of springs, weather stripping, remotes, keypads, screens, and windows in stock for most units. No matter what part of your unit needs service, we’re sure to have a part that will fit. Our inventory doesn’t cover only a large variety of manufacturers, but is composed of only the highest quality components. By choosing the best, we’re able to offer a warranty on all of our repairs.

We offer wide range of stainless metal appliqués. Brushed metal effect or painted any RAL colour. Appliqués will suit most demanding design requirements. If you can’t find what you like an option could be your personal design appliqué. Just send a picture or drawing and we will replicate it on your door. Use our recommended designs or create your own:
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 electronics should also be inspected before or after investing in the cost of replacing the garage door panel to make sure your door will operate properly. The sensors prevent the door from closing on someone's foot or a pet. If they don't work, someone could be injured. Also check to make sure the door opener works, since you could otherwise be locked out of your garage.

The history of the garage door could date back to 450 BC when chariots were stored in gatehouses, but in the U.S. it arose around the start of the 20th century. As early as 1902, American manufacturers—including Cornell Iron Works—published catalogs featuring a "float over door." Evidence of an upward-lifting garage door can be found in a catalog in 1906.[4]
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.
A typical exit repair issue is usually at the point that your entryway does shut or close totally, which may be realized by evacuated springs. There are two strategies you can deal with this issue: one is by adjusting the purpose of restriction switch, or you can modify the springs. Amazingly old springs can comprise of an additional if weight the motor.
The prior clamping of the set-screws tends to have pressed a dimple into the hollow shaft and to have distorted the shaft's roundness into an eccentric shape. While releasing the set-screws, I was careful to loosen them enough to let the cone swing around any such distortions. I was also careful to observe any binding of the old cones on the eccentricity or burring on the shaft. The fit of the cone on the shaft is supposed to be loose enough to avoid binding, but if it were to occur one would have to be careful not to assume the spring was unwound when in fact the cone was just stuck on the shaft. If I had a stuck cone that I could not unwind with a little extra force, then I would have called in a technician to deal with it. In the worst case, I suppose the spring must be deliberately broken with some hazard, thus releasing it for a forceful disassembly, and the shaft and some other parts replaced. But this is an unlikely situation and in this case was not necessary.
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:

Our garage door installation and repair professionals are courteous, knowledgeable, skilled and dedicated to your satisfaction. Let us show you what we’ve done for so many businesses and homes throughout Cincinnati and northern Kentucky when it comes to their garage doors, and what we can do for you. Once you’ve tried our services, you won’t have to search for a garage door service provider in this area ever again.


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.
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.
Garage doors break on their own schedule which is why we offer 24/7 Same Day Garage Door Repair. Emergency Service is also available upon request 7 Days a week. Say Goodbye to return trips because our expert Technicians Service Major Brands and are Equipped with Fully Stocked Trucks. When the garage door breaks, J&S Overhead Garage Door Service is your local Garage Door Repair Specialist. Whether your garage door or opener is not working our expert technicians will repair or replace any garage door system on the spot. Proudly serving Hampton Roads including Virginia Beach, Newport News, Chesapeake, Hampton, Yorktown, Suffolk, Portsmouth, Poquoson, Norfolk, Gloucester, Smithfield, Franklin, and Williamsburg, Virginia.

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.


As we’ve mentioned before, springs are installed within your garage lift mechanism in order to help lift the door. Because doors are so heavy, the lift motor would undergo far more significant wear and tear if it had to lift the full weight of the door every time you opened it. Furthermore, in order to ensure that you can open your door even if you lose power in your home, springs allow you to lift the door by hand when the motor is disengaged.
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.
This page is a description of how I replaced torsion springs on a garage door. You may find that my experience either frightens you from trying such a stunt yourself, or encourages you to give it a try. You may curse me for revealing the techniques supposedly known only to the trade, or perhaps thank me for explaining how it's done. All the secrets are revealed below. Even if you hire this work out, just knowing how it is done will help you shop for the best deal and avoid falling prey to overcharging tricks.
Here are the winding rods inserted in the winding cone of the unbroken old spring, posed just for a picture. Note that I have carefully placed a sturdy, steady ladder just clear of the swing of the rods, such that when I am standing on the lower rungs to reach the rods, that my head and body are clear of the "kill zone" around the spring and cone. You must have a trustworthy platform to stand on, because a slip or shake of the ladder while you are winding can cause you to lose your socketed attachment to the cone, letting loose the spring. I would not trust an ordinary household step ladder for this purpose.

The best garage door openers have a lifetime warranty on their motor and belt or chain. While it’s common for motors to come with lifetime warranties, belt and chain and parts warranties are often not that generous. However, it’s not uncommon for parts warranties to extend several years. Often the warranties are limited and subject to specific stipulations that vary and are detailed in the user manuals.
Clopay Garage doors featuring Intellicore insulation technology represent Clopay Garage doors featuring Intellicore insulation technology represent the ultimate smart choice for homeowners. Clopay Intellicore is proprietary polyurethane foam that is injected into a garage door expanding to fill the entire structure. The result is a door with incredible strength and durability. Its dense insulation also produces a quieter ...  More + Product Details Close
Your garage door is used often, generally more than any other door on your home. Therefore, it’s important to make sure that it’s tough, dependable and weather resistant. Our doors are fully capable of meeting all these requirements and are specifically designed with our customers in mind. While durability is important, so is appearance and we offer many different styles and colors of garage doors to match your home or business.

Here's a view of my door and its broken torsion spring. This door is 10 feet wide and 7 feet high, constructed of 3/4 thick hollow wood panels inside with 3/4 inch plywood siding outside to match the house exterior. This is original to the house which was constructed in 1978, and is much heavier (238 pounds, as I measured later as described below) than the steel doors most common today in new construction. The 10-foot width is a little larger than usual for a one-car garage; such doors are typically only 7 or 9 feet wide. The ceiling height is 9 feet, providing 18 inches clearance above the torsion shaft. This is in a 3-car garage with 3 separate extra-wide doors. Every man's dream! ('cept when the door is broke.)
Dynamic Door Service can install a new garage door replacement for you quickly and efficiently, conducting thorough testing on your garage door replacement and automatic garage door opener to be sure both are functioning properly.  Investing in a garage door replacement also adds value to your home, since it is one of the best home remodelling projects to recoup cost when you sell your home. Whether you need a new automatic garage door, a garage door replacement, garage door repair or garage door opener replacement or repair, call Dynamic Door Service for prompt, professional automatic garage door installation, maintenance and service.
Unmatched or mismatched spring pair: You may find that you have a pair of springs that are different sizes. This mismatch may be a normal application, since the total torque on the torsion shaft is simply the sum of the torque contribution of each spring (indeed, very large doors can be lifted with 4 or more springs along the torsion shaft). The sum of the torque rates determine the lift; and dividing the torque among multiple springs does not change this. Some repair shops even apply mismatched pairs deliberately, since a few stock sizes of springs can be combined to fit a wider range of door weights than only matched pairs. For example, a technician may carry springs in increments of 20 lbs of lift, and when using pairs this allows a 20 lb increment in possible choices instead of 40 lb increments. Or, one spring from a pair may have broken and been replaced with a spring of equal torque rate but different size than the original.

When you call on Precision Door, you can rest assured a talented professional will arrive at your home. Our technicians are professionally trained and field tested by the best in the industry at one of our two, state-of-the-art training facilities prior to servicing your door. Plus, successfully repairing over 1000 garage doors each day teaches you a lot. There is no substitute for experience


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 parts, parts, parts trick: You might be told you need new rollers, cables, drums, bearings, etc., when you don't, or at highly inflated prices. Good questions to ask when first calling for service include, "How do I know you will only charge me for the parts I actually need?", and "If you don't have all the parts I need, what will you charge me to come back?"

No matter what time or day of the week you require our services, we are always here to help. There are no additional fees to have us come by during the evening or weekend, so we’ll be able to offer you our premium service on a schedule that meets your needs. Contact Precision Garage Door Service of Lincoln today to book a free estimate and experience the high quality service that we have been providing to residents of Lincoln for many years.


We believe we should treasure our natural resources, and our business practices reflect this ideal. All our service vehicles are flex-fuel efficient hybrids. When we have to throw away old parts, we recycle as many parts as possible. We clean up our trash after we complete a project. Our dispatch center is conscious about our carbon footprint and we use GPS technology and strategic planning to reduce our miles on the road.
The Genie Universal Dual Frequency Remote Conversion/Upgrade Kit The Genie Universal Dual Frequency Remote Conversion/Upgrade Kit includes one 3-button compact remote one receiver one transformer and electrical wire (two-wire). The kit alleviates frequency issues from the recently implemented Land Mobile Radio communication system used by military bases as part of the Homeland Security efforts.  More + Product Details Close
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