Windows provide protection — against the cold, the weather and unwanted visitors. Burglary protection on windows is therefore an important issue that has to be considered during planning. For example, windows on the ground floor should offer better burglary protection than windows on higher floors, assuming these are not accessible from outside via balconies etc. Depending on the type and model of the window, Internorm windows are fitted with different security features. This gives you a high-quality technical solution that offers maximum security.
Secure against impact
Reinforced safety glass provides increased resistance against mechanical and thermal stresses. Laminated safety glass offers burglary protection through active and passive security. The splinter-free glass with a tear-resistant, viscoplastic intermediate layer also provides protection against injury.
Secure thanks to innovation
Integrated flaps instead of locking pins lock the sashes securely. The standard model fittings thus correspond to resistance class RC2N (with no lockable handle) according to EN1627-1630, tested burglary protection as standard.
The innovative locking mechanism is the first real revolution in fittings systems since the introduction of the turn/tilt fitting at the beginning of the 1970s. At Internorm, it has been standard practice for years not to use hinges that are visible from the outside, and we have also applied this principle — visible technology only where absolutely necessary — to the window frame. I-tec Locking is currently used in KF 500 home pure UPVC and UPVC/aluminium windows and is revolutionary in many ways: It does not require any visible closing parts on the frame — instead of prominent locking pins, integrated flaps lock the sash securely. The locking flaps are connected invisibly in the hollow chambers of the sash profile.
Many window panes are only connected to the frame at a few points. At Internorm, the FIX-O-ROUND technology is available for consistent, all-round fixing as standard. The advantage of this technology is in the continuous bonding between the window frame and the glass pane. This significantly improves the burglary protection — as well as the stability, heat and sound insulation and the functionality of the window over its entire life span.
Burglary-resistant windows are divided into six resistance classes (RC 1 – RC 6), with RC 6 being the highest resistance class.
Since September 2011, following the introduction of a European standard, the term "RC" applies. Since the tests for the new classes have become somewhat stricter, the simple conversion of the former WK classes to RC classes is not permitted.