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05 Nov 2015


As a door expert witness, We are called upon many times 12 months to evaluate garage door injuries. Doors come in many shapes and sizes. Their functions range between basic security of an area to cosmetic concealment. Most doors might be broken down into a few basic styles or categories. Typical modern doors for residential applications usually are predominantly of the overhead sectional variety. That kind of door comes in many configurations, materials, amounts of insulation, and a massive amount appearance possibilities. They are offered as a prefabricated kit, or built like a custom design to complement the dacor of any building. Commercial warehouse type installations often dictate higher security requirements. A good choice for this security sort of door is the "roll-up" style that resembles a roll top desk type of door. This door might be manufactured with a various materials that can be as strong because the adjacent walls, making forced entry through this opening very difficult. Other common commercial installations include aluminium single or sectional panel doors. These doors function more for closing off a previously secured area than for assuring point security. Garage Door Service And Repairs And Installs

Before, the biggest concern with operating an overhead garage doors was the potential risks for this springs used for balancing the door weight. Pre mid 1960's door installations typically relied upon a pair of stretched (tensioned) springs to help you the operation of the door pivoting hinges. These springs became loaded (tensioned) as the door was moved in the closed position. Unloading (releasing) with the stored spring energy occurred because the door was opened to the horizontal overhead position. Just about the most dangerous aspects of these spring systems was that after a period of time, often with no maintenance or inspection, the points of attachment of these springs would rust or become weak. This weakening with the springs or points of attachment would often lead to an inadvertent explosive failure flinging the broken spring components over the garage, embedding the spring or steel components into the garage walls, cars or other items in the path of travel. Unfortunately, sometimes people were in the path of travel of such explosive occurrences. As these springs failed, as an attempted safeguard, some manufacturers devised a "caging" system for that springs. These cages were retrofitted on top of the stretched springs so as to capture the parts that might release if a failure occurred. While these caging devices were helpful, they were not completely effective. A few of these spring devices are still used today. Whenever this issue exists or the quality of garage components are questionable, a certified professional service technician must be consulted.

In response to the inherently dangerous old-style garage spring issues as above, a newer and safer system for opening the overhead garage doors was created. The idea would have been to transfer the load or weight of the door via a cable and pulley system to some vertical rod now built with a torsion (twisted) spring. This kind of spring is installed with specialty hardware and bolts into a fixed plate on one side, while the entire spring is put around a horizontal pipe. This load balancing method is normally installed directly on the header of the garage opening. Using appropriate cables, connectors and pulleys, the load of the garage door is transferred in the torsion spring system. The gap between the old style stretched spring as well as the newer torsion spring is the way that the spring energy is stored. Using the old style stretched spring, the energy is stored and released by pulling for the spring or giving back the spring to its un-stretched condition. Using a torsion type of spring, the force is imparted or removed by rotating the spring clockwise or counter clockwise based upon the direction of usage. With professional installation, the complete loading of the torsion spring is controlled through the garage installer, and it is determined by the weight and size the garage door that it is operating. When this kind of torsion spring fails, it remains attached and intact for the location on the horizontal control rod where it had been mounted. I have not heard about or seen any torsion spring fly across a garage, creating injury from failed components much like the stretched older style door springs. This is not to state that injuries haven't occurred with the torsion style spring. The installation of this type of spring is mostly safe when left with a trained garage door installation professional. Severe and high injuries have occurred when untrained, unqualified everyone has attempted to install or service this type of spring. In most installations, an alert tag is left attached alongside the torsion spring when the garage door is installed. This tag warns of the danger associated with the stored energy with this spring, and alerts untrained visitors to not attempt any repair, adjustment or even touch the spring and associated hardware. Once the label that should be attached with this spring becomes damaged, is slowly removed or tampered with, it is important that a new warning label be reattached immediately to indicate the dangers of this spring tension

Doors can be operated manually (manually), as well as automatically (by power assisted motor). In both cases, the proper operation in the garage door is determined by the right balancing of the garage door weight, springs and related component hardware. A mechanical power assisted motor cannot overcome an improperly balanced door. The weight of all garage doors is normally deceptive. Due to the fact that a properly functioning door appears an easy task to open and close, many users do not realize the combined overall weight until springs are not able to assist the door in its operation. In all cases, no matter the type of garage door, the entire system of hinges, track, hardware, and door opener be a team. Problems with misalignment, shifting, or jamming can cause problematic operation of the door. Counter forces imparted to a garage door, not engineered to the components, can lead to injury. Inappropriate maintenance or complete insufficient maintenance has lead to severe bodily injuries. Forcing the process of a garage door, when several components have become damaged or broken has resulted in serious bodily injuries. In all cases, maintenance is a crucial and important factor of proper operation of all door systems. Garage Door Service And Repairs And Installs

As opposed to an overhead type of garage door, be it sectional or single panel, roll up doors have a different type of operating system. When these doors are used, they can be concealed in the overhead or under mounted trough. These doors operate similarly to a roll top desk door apart from how they are stored if not in the closed position. They normally coil because they are retracted, and require significant gear trains to scale back the effort required to move these doors down and up into position. Often the forces had to move these roll up doors require a reduction sort of transmission that allows a really heavy door to get operated effortlessly. These doors might be chain driven either manually, or could be automated using electric motors. Rollup doors require more frequent evaluation and servicing compared to a standard overhead garage doors. The tracks which are mounted vertically for sides of the garage opening need maintenance and cleaning more often, and are often blocked by foreign obstructions or damaged by collision of some sort or other. These roll up doors are often held open by some type of ratcheting action. Proper balancing of the doors is often more important than an overhead sort of door, as the weight of the type of doors is usually much greater than an overhead door.


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