When thinking of steel doors, the first thing you come up with is a safe door. But even cellar doors or side entry doors made of steel can have a burglar-resistant function. Which requirements apply to such doors, you will learn in this post.
Burglary protection for windows and doors
The same standard applies to windows and doors when it comes to burglary protection: DIN EN 1627. It defines so-called resistance classes (RC 1 - RC 6), which determine how long a window or a door will differ Burglary attempts can withstand. Classification applies equally to windows and doors.
An overview of the resistance classes and their meaning can be found in the following table.
|Resistance class||Perpetrator class||Resistance time in minutes||Tools used|
|RC 1||Anyone||No time||Maximum of small tools (screwdriver)|
|RC 2 N * for unglazed doors not generally used||occasional use||3 min||screwdriver, pliers, wedges|
|RC 2||casual offender||3 min||screwdriver, pliers, wedges|
|RC 3||habitual offender||5 min||two screwdrivers and cow foot|
|RC 4||experienced perpetrators||10 min||additionally ax, chisel, hammer and chisel, cordless drill|
|RC 5||Experienced perpetrators||15 min||additionally jigsaw or saber saw, angle cutter|
|RC 6||Experienced perpetrators||20 min||additional drilling machine and powerful power tools|
With the help of the resistance class, you can see at first glance how resistant a steel door is against burglary is. For this, certain conditions are necessary to achieve a classification. This mainly applies to:
- sheet thickness (RC 3 generally means a sheet thickness of around 1.5 mm)
- door leaf design
- frame design
- locking device design
resistance classes RC 5 and RC 6
steel doors of RC 5 and RC 6 classes are quite rare. Usually the offer almost always ends with resistance class RC 4. Even prison cell doors (in police stations or prisons) very often only fulfill resistance class RC 4.
Many manufacturers of steel doors require the indication of the "danger side" to select the right door. This is always the side of a door from which a burglary is to be expected. Doors are then executed differently according to the respective hazard page.
An installation of safety doors is only permitted in sturdy masonry that has been expertly designed. The types of masonry permitted depend on the manufacturer. Only if these requirements are met, the specified resistance class of the door applies.Tips & Tricks Even with cellar doors, you should also pay attention to the degree of thermal insulation and, if necessary, to the required fire resistance class.