Break-ins and theft remain one of the most significant threats our homes face. Therefore, it is essential to secure all entry points, including windows, to prevent unauthorized access to the building. To achieve this goal, considering the installation of P4 anti-burglary glass is crucial.
P4 anti-burglary glass consists of two glass panes and four layers of PVB film. This film typically has a thickness of 0.38 mm and is made of polyvinyl butyral. This type of synthetic resin is known for its high strength and transparency, ensuring that the glass remains impact-resistant without compromising its optical properties. To gauge the level of durability provided by P4 glass, one must refer to the tests it undergoes to qualify for this classification: during laboratory tests, the glass must withstand three impacts from a 4.11 kg ball dropped from a height of 9 meters. In practical terms, this means that it is virtually impossible to breach the glass even with a heavy hammer. The P4 classification indicates that these glass panes are highly resistant to break-ins and can serve as a substitute for security bars with 150 mm spacing made of 10 mm diameter steel wire.
Due to their construction, P4 glass windows entail a higher cost compared to, for instance, P2 safety glass. However, the lower class only provides protection against injuries in case of breakage and serves as a temporary barrier against unprepared burglary attempts.
Furthermore, windows and doors equipped with P4 glass can contribute to reducing insurance premiums, as many insurance companies deem them sufficient for anti-burglary protection and offer premium discounts of up to 10% upon installation. This means that the one-time cost incurred for installing windows and doors can quickly pay off after informing the insurer.
To ensure that P4 glass performs effectively, it is essential to complement them with anti-burglary fittings, which will provide peace of mind, security, and lead to lower insurance premiums.
