Security Door Locks

The phrase ‘door security’ or ‘bollinger lock’ may refer to a number of different measures employed to strengthen doors against criminal attack, lock picking and ram-robbing, and prevent burglaries and house invasions. Door security is normally used in government and commercial buildings, as well as at residential premises. Home security systems use internal mechanisms to detect intruders or criminals and alert the control room, while alarm systems may be used to sound an alarm if the security breach has been detected.

A number of security doors have simple sliding glass panels, locks or other forms of external locking devices. These doors are usually fitted with one of several exterior hinges. The most common type of external locking device used with interior doors is a deadbolt, which is fixed directly to the door frame, preventing the hinges from being opened from the outside. Hinges, if present, must be positioned properly to prevent the hinges from detaching, which allows the door to be locked even if the hinges have been removed. If the hinges are malfunctioning, the door frame can be forced open easily.

Screen security doors canberra locks are also available that are composed of mesh or plastic components that are operated by an electronic device. Some security doors have mesh or plastic inserts in their design, while others have solid hinges or deadbolts. Some are designed to combine security with aesthetics, having patterns such as grooves or channels that run across the surface of the door panels. This provides a safer seal, reducing the chances of air leaks and collecting of dust and debris. If the security doors are not properly maintained, they will become inoperable; failure of the locking device will disable the security doors.