Burglar-resistant steel doors - what requirements must they fulfill?

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.

Resistance classes

An overview of the resistance classes and their meaning can be found in the following table.

Resistance classPerpetrator classResistance time in minutesTools used
RC 1AnyoneNo timeMaximum of small tools (screwdriver)
RC 2 N * for unglazed doors not generally usedoccasional use3 minscrewdriver, pliers, wedges
RC 2casual offender3 minscrewdriver, pliers, wedges
RC 3habitual offender5 mintwo screwdrivers and cow foot
RC 4experienced perpetrators10 minadditionally ax, chisel, hammer and chisel, cordless drill
RC 5Experienced perpetrators15 minadditionally jigsaw or saber saw, angle cutter
RC 6Experienced perpetrators20 minadditional 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.

Danger page

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.

Wall requirements

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.
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