Aluminum windows in the RC4 class are able to effectively secure objects with medium and high risk of attempted break-ins carried out by experienced burglars equipped with professional tools and having knowledge of forced joinery. Such a high level of protection against burglary is determined by the special construction of aluminum profiles reinforced in critical places with steel sections, together with the use of appropriate fittings and high-class glazing.
are a carefully thought-out design that is the result of combining the capabilities of new systems with experience gained during testing of windows in lower burglary resistance classes. The window frame is shaped in a special way that allows for the use of additional reinforcements in the form of metal sections that make it difficult to drill through the window, while improving its statics. Particular attention is paid to reinforcing the corners of frames and sashes, these are critical places for RC4 windows. The glass is glued into the aluminum frame of RC4 windows with silicone glue that ensures high mechanical resistance and the ability to transfer structural loads. In RC4 aluminum windows, non-standard fittings with multi-point locking are used, along with an appropriate number of anti-burglary catches that ensure solid locking of the sashes to the frame and effective resistance to attempts to force the window sashes open. This RC4 window locking system provides effective protection against burglary using great force and a set of professional tools in the form of scissors, crowbars, axes and hammers, as well as a cordless drill. In practice, RC4 windows are an effective barrier even for experienced groups of burglars.
One of the key elements of the construction of RC4 aluminum windows is anti-burglary glass with the use of the latest solutions in the field of structural glazing. In addition to the lowest class of burglary resistance, all glazed anti-burglary structures classified in the PN-EN 1627:2012 standard require the use of laminated glass classified in the PN-EN 356:2000 standard, demonstrating their resistance to impact and attempted manual attack. According to the PN-EN 1627:2012 standard, for effective protection against burglary, the glazing of a RC4 class window should be at least P6B glass according to PN-EN 356:2000. Laminated glass of the P6B class is a genuine anti-burglary glass tested by impacts with a hammer and an axe weighing 2 kg, guaranteeing very good protection against attack, which translates into real anti-burglary properties of the entire RC4 window. A very important aspect is the way the glass is mounted in the RC4 window frame, because in such a high class of burglary resistance, the glass is a load-bearing element of the window, significantly affecting its statics. For this reason, in RC4 windows, in addition to the use of standard fixing elements, the panes are glued using a specialist silicone sealant designed for structural connection of the glass with the aluminum window structure. The silicone used on the entire contact of the glass with the window frame provides excellent adhesion and is an effective obstacle to pushing the pane out or cutting it out during burglary attempts.