If you want to avoid unwanted guests, think for a while how you can protect your place. It is definitely reasonable to invest in in anti-burglar systems, anti-burglar windows, robust hardware on the door and some external items – bars and roller blinds. These can be supplemented by some king of an electronic alarm system.

Any effective protection from a thief sneaking into the house through the balcony door needs to be based on application of a full anti-burglar offer. Do not forget, however, that even the most perfectly protected windows must not be left open or even unlocked, as each burglar is just waiting for such opportunities.

Glazing and security films

A set of safety glazing should, first of all, prevent burglary, but it is also important that the security devices not affect the view. Therefore, when selecting an appropriate protection system, you need to remember about your comfort of seeing the world outside. Generally, safety window panes are glued in layers, forming double- or triple-pane structures. Between them, a laminate film is placed, which, when the glass breaks, holds all the pieces together. Anti-burglar glazing is marked with symbols P1 to P9. The higher the number, the more resistant and thicker the glass is.

Glass class P2 or P4 is most common in the windows. A class P2 pane set is composed of two panes, 4 mm thick each, glued to each other with 2 layers of laminated film, 0,65 mm thick each, while a class P4 pane set is composed of two panes, 4 mm thick each, glued to each other with 4 layers of laminated film, 0,65 mm thick each.

Strength of those pane sets is tested with a free fall of a 4kg iron ball. This table presents a comparison of the pane sets.


wytrzymalosc-szkla-oknaglazing class    /   number of hits  /   fall elevation

Handles and locks

Windows are always the weakest point. That is why each piece of carpentry should be equipped with a handle with a key and a cylinder, making its opening from the outside difficult. Another solution is to install a handle integrated with a locking mechanism in the indoor-side of the window.


All movable mechanisms, as e.g. latches, pressure devices, anti-force-in pins and locking items, should prevent the burglars from exerting force onto the window structure and not be susceptible to any force or levering. Therefore, it is important to have them made from solid steel, not from any brittle metals. An additional element could be some plates that prevent drilling out the handle fixing bolts.

Alarm systems

Electronic security systems do not protect the windows per se, but “support” other mechanical devices only. An alarm system may include magnetic sensors (informing of opening the casement), movement detectors (go off when there is some movement at the window), vibration detectors (reacting to breaking the glass). Alarms are definitely the cheapest solution, but there basically rely on reaction of third persons.

Secure windows

Secure windows are those windows, where the section strength has been enhanced, class P4 glazing has been fit in, and at least class RC-1 hardware was used, provided with locks preventing forcing out the window corners, and devices preventing drilling the lock off.

Many of those solutions can be installed optionally in the „4 Seasons” windows.