A garage door is a large size door on the garage that opens or closes manually or an electrical motor. Garage doors are always large because they of enough to accommodate automobiles and other vehicles. Small garage doors are made up with a single panel, that can tilt up or back across the garage ceiling. Larger doors are made up of multiple joined panels and that roll up on the garage ceiling or roll above the doorway. These doors are initially used in 1902 by Americans and published a catalogue featuring float over door. Upward lifting doors were found in 1906. The operating mechanism is spring-loaded or counterbalanced to offsets the weight of the door and reduce the human and motors power to operate. Larger garage doors cardiff using motors for open and close the door. Some garage doors are operated slide or swing horizontally. Doors are commonly made up of wood, metal, or fiberglass and they may be insulated to prevent heat. Warehouse, bus garage, and locomotive sheds have larger doors. The common type of overhead garage door used in past, that was built with one panel. The weight of the door may be 180 kg or more but it is balanced by the torsion springs or pair of extension springs. The manual method of the door opening is easy and low in cost, but remote operating doors are very safe and secure.

Types of doors and materials:

Single panel garage doors are made up of one monolithic panel. Single panel door swings up and overhead with a hinge on each side from the closed position to the fully opened position, it is called jump type hardware. A demerit of this door is that the swing up arc of the door occurs partially outside the garage, so the vehicle must stop and park several feet in front of the door to avoid hit by the garage door when it opens. It is also installed in one piece track type hardware, by this a car can park very near to the door. This type of hardware has much less arc than jump type when open and closing. Sectioned garage doors are one of the types that can be made up of 3 to 8 joined panels. That is operated like slide up and overhead.

Sectional garage doors are occupied the same amount of space occupied by the monolithic panel door. It has 2 advantages over monolithic and it never requires any space outside the garage to open the door and a vehicle can park very close to the door. Another advantage is this type of door has more reliability and robustness than monolithic doors. This type of door can be made by the materials steel, aluminium, wood, copper, glass, and vinyl. These are the most popular materials for manufacturing a door. This garage has a lot of space under the ceiling and fast access. We can use the here entire ceiling of the garage.

Roller doors are another type which is also called sheet doors, and this is made up of corrugated steel. Corrugation gives more strength when against impact. We can use other materials for these doors, of impact resistance not required. A single car garage roller has a preloaded spring inside to the rolling mechanism.