Marveille Garage Doors August 01st, 2018 - 11:58:49
These doors can be chain driven either manually or can be automated using electric motors. Roll up doors require more frequent evaluation and servicing than a standard overhead garage door. The tracks that are mounted vertically on both sides of the garage opening need maintenance and cleaning more frequently and are often blocked by foreign obstructions or damaged by collision of some type. These roll up doors are often held open by some type of ratcheting action. Proper balancing of these doors is often more important than an overhead type of door as the weight of these type of doors is normally much greater than an overhead door.
An exception to this relates to "do it yourself" garage door kits that are sold at local home centers. A homeowner could install the door because these kits do not come with a professional quality package of hardware that should or would require special knowledge for the installation. These kits do not typically employ torsion springs that would require special knowledge proper tools and working skills to install. The doors are typically for light duty use. Professional installation services are often available through a home center to assist a homeowner in need of a specialized installation. As with most trade specific tasks years of experience working as a professional installer qualifies tradesmen for their contracting license. The average homeowner watching a few television shows that give rough explanations of how to install garage doors is not usually qualified to install his or her own door. These "how to" television shows are no substitute for the many skills acquired after working in the field.
With a torsion type of spring the energy is imparted or removed by rotating the spring clockwise or counter clockwise depending upon the direction of usage. With professional installation the complete loading of the torsion spring is controlled by the garage installer and is determined by the weight and size of the garage door that it is operating. When this type of torsion spring fails it remains attached and intact to the location on the horizontal control rod where it was mounted. I have not heard of or seen any torsion spring fly across a garage creating injury from failed components as with the stretched older style garage door springs. This is not to say that injuries have not occurred with the torsion style spring. The installation of this type of spring is generally safe when left to a trained garage door installation professional. Severe and serious injuries have occurred when untrained unqualified individuals have attempted to install or service this type of spring.
In contrast to an overhead type of garage door be it sectional or single panel roll up doors have a totally different type of operating system. When these doors are used they can be concealed in an overhead or under mounted trough. These doors operate similarly to a roll top desk door except for how they are stored when not in the closed position. They normally coil as they are retracted and require significant gear trains to reduce the effort required to move these doors up and down into position. Often the forces needed to move these roll up doors require a reduction type of transmission that allows a very heavy door to be operated effortlessly.