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 find in this article.

Burglary protection for windows and doors

For windows and doors, the same standard applies 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 can withstand various burglary attempts. 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 classperpetrators classResistance time in minutesUsed tools
RC 1Anyoneno timeAt most small tools (screwdrivers)
RC 2 N * for unglazed doors usually not usedOpportunist3 minScrewdriver, pliers, wedges
RC 2Opportunist3 minScrewdriver, pliers, wedges
RC 3habit perpetrators5 mintwo screwdrivers and Kuhfuß
RC 4Experienced perpetrators10 minadditionally ax, chisel, hammer and chisel, cordless drill
RC 5Experienced perpetrators15 minutesadditionally 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. For this, certain conditions are necessary to achieve a classification. This essentially applies to:

  • Sheet thickness (RC 3 generally means a sheet thickness of about 1.5 mm)
  • Execution of the door leaf
  • Execution of the frame
  • Execution of the locking device

Resistance classes RC 5 and RC 6

Steel doors of the classes RC 5 and RC 6 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" when selecting 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 security doors is only permitted in professionally executed, stable masonry. 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

Especially 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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