When protecting property like a business, choosing the best security door is important for peace of mind. With a variety of security ratings available, it can be difficult to determine which level of protection best suits your needs.
In this article, we will compare SR2, SR3, and SR4 security doors and help you understand their differences and make a well-informed buying decision. As a leading British manufacturer of security doors, Bradbury Group has the expertise to guide you through this process.
Security ratings, like the ones defined by the LPS 1175 standard, are measures and guidelines of a door’s resistance to forced entry from intruders. The Loss Prevention Certification Board (LPCB) independently tests and certifies products according to this standard, making sure that security doors meet stringent criteria. The ratings range from SR1 to SR8, with higher numbers indicating increased levels of protection.
SR2 security doors are designed to withstand opportunistic attempts at forced entry using various hand tools, such as crowbars, bolt cutters, and drills. These doors are put through rigorous tests to ensure they can resist attack for at least 3 minutes.
SR2 security doors are suitable for applications where a moderate level of protection is required, such as:
At Bradbury Group, we stock specialised SR2 security doors, including the M2M2 range, which combines robust construction with attractive designs. The M2M2 range features a solid core construction, reinforced hinges, and a multi-point locking system for a reliable and secure solution for your property.
Stepping up to SR3 security doors provides enhanced protection against determined attempts at forced entry. SR3 doors are tested against a broader range of tools, including power tools, and offer greater resistance than SR2 doors. These doors are designed to withstand attack for at least 5 minutes, providing ample time for response teams to arrive on the scene.
Typical applications for SR3 doors include:
M2M3 security doors provide SR3-certified security that balances heightened security with practical design considerations.
For the most demanding security requirements, SR4 doors provide exceptional protection. These doors resist prolonged, expert attempts at forced entry using sophisticated tools, such as disc grinders and reciprocating saws.
SR4 doors are tested to withstand attack for a minimum of 10 minutes for the highest level of protection for your premises. SR4 doors are commonly used in:
The M2M4 range provides the ultimate in SR4 security, with doors tested to withstand extreme forced entry attempts.
Selecting the appropriate security rating for your doors involves careful consideration of several factors:
While the security rating is a core factor, it is important to recognise that other elements also contribute to a door’s overall performance:
High-quality materials and precise manufacturing processes mean the door can withstand the rigours of daily use and potential attacks.
A robust locking system is needed to maintain the door’s integrity and prevent unauthorised access. Cheap or poorly designed locks can compromise the entire door’s security.
Even the most secure door will fail if not installed correctly or maintained regularly. Hinges, locks, and seals should be checked and lubricated periodically for optimal performance.
A security door is just one component of a larger security plan. It should be integrated with other measures, such as access control systems, surveillance cameras, and alarms, to provide a holistic approach to security.
There are several common misconceptions about security ratings that can lead to misguided decisions:
Reality: While higher ratings offer increased protection, they may not be necessary or practical for all applications. Choosing a rating that aligns with your specific needs is important.
Reality: Modern security doors, like the ones we provide, come in various styles and finishes to complement a variety of architectural designs.
Reality: Security doors are suitable for a wide range of applications, from residential properties to commercial and industrial facilities.
Reality: Security doors vary greatly in construction, materials, and features, even within the same security rating. Choosing a reputable physical security manufacturer to guarantee quality and performance is important.
Understanding the differences between SR2, SR3, and SR4 security doors will help you decide your physical security requirements. By assessing your unique needs, considering the factors influencing door performance, and partnering with a trusted manufacturer like Bradbury Group, you can have peace of mind that your building is protected against forced entry attempts.
With over 30 years of experience in the security industry, we are well-positioned to help you navigate the world of security doors. Our extensive range of SR2, SR3, and SR4 security doors is designed to meet the diverse needs of our clients, offering uncompromising security without sacrificing aesthetics or functionality.
In addition to our standard product ranges, we offer specialised installation services. Our team of experts will guide you through the process of selecting the best security doors, helping you achieve the optimal balance of protection, practicality, and value.
