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Commercial Security doors

  • Supply, Installation and Servicing
  • SR Rated Security Doors
  • Security Rated Fire Doors
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Situated throughout commercial buildings, and rated to varying security standards, security doors form an essential barrier from one environment to another.

Whilst emphasis is often given to other security hardware, such as CCTV, or Access Control, it’s safe to say that Security Doors provide physical protection, which normally forms the ultimate defence in the instance of an emergency.

Within commercial environments, more often than not, they are constructed from steel, which provides a unique set of benefits over timber, composite and uPVC.

Manufactured to specific standards, and precision cut to the opening, security doors need special attention when installing. Unlike timber doors which can be altered more easily on-site, steel doors need to be installed by competent, and ideally certified door engineers, such as ourselves.

Key benefits of Security Doors

Black steel security door
  • Security – Offering different levels of security, these doors can be installed as a simple visual deterrent, or specified to various security ratings, including ballistic grades.
  • Fire Doors / Multi-function doors – In addition to various security certifications, Security Doors can also double up as Fire Doors or Emergency Exits.

    Generally speaking, anything north of FD120 (120 minutes fire protection) is normally a steel door specification.
  • Weathering and maintenance – Commercial Security Doors are usually created from steel.

    Timber doors tend to swell and shift throughout the year, often resulting in adjustments and additional wear to the door leaf and associated hardware. This is especially so, if the door is not maintained correctly.

    Metal doors generally have less variation in their operational performance, making them more stable and reliable throughout the year.
  • Acoustic & thermal benefits – The steel leaf is often only 1.5mm thick. The rest of the construction can then be filled with a variety of materials, depending on your requirements.

    Door and frame thicknesses are also flexible, allowing for even greater thermal and acoustic properties.

    Seals can also be utilised for the reduction of drafts and generally reducing airflow. This can have additional benefits of reducing smells from entering one environment to another.
  • Hard wearing – When coupled with appropriate hardware, such as kick plates, metal doors can withstand more impacts than wooden doors.
  • Finish – Whilst painted RAL colours are the most popular within a commercial environment, many steel doors can still have a veneer, laminate or printed finish, therefore fitting in with various bespoke or heritage designs.
  • Visual deterrent – Whilst physical prevention is critical, often metal Security Doors provide a unique level of visual deterrence.
  • Bespoke linings – Given the hollow nature of metal doors, this design enables you to fill the voids with additional technology/hardware.

    Examples include extra steel for ballistic doors, and lead linings for X-Ray doors.

Security Door Ratings / Certifications

Whilst there are many variants of ratings in the UK for Security Doors (such as PAS 24/Secure By Design), we tend to only focus on commercial doors, and the certifications that complement them accordingly.

Whilst EN1627 is widely used, we tend to favour manufactures who utilise BRE’s LPS 1175 certification process. These certification grades range from SR1 all the way up to SR8.

This certification method isn’t just applicable to doors. The same SR rating can be applied to other physical protection hardware, such as fencing systems, shutters, walls and other physical prevention systems.

This allows multiple physical security products to be under one certification process and set of standards.

The LPS 1175 looks at the following key elements, when identifying a products SR rating:

  1. How long can the door withstand an attack?
  2. How many people are attacking the door?
  3. What tools are they using to attack the doors?

SR ratings also considers the noise made during the attack and the types of tools. For instance, are attackers using manual tools, battery powered or mains powered tools.

All of the factors above, need to be considered when specifying the correct SR rated security door, as every environment will have it’s own set of criteria. Belt and braces is rarely the right approach for commercial Security Doors.

Needless to say, the door is only as good as the weakest point, so assessing the construction of the building is also wise.

Important accompanying hardware for Security Doors

In addition to the points above, the following can also be specified into a security door to add additional functionality:


  • Acoustic seals – Rated to different levels
  • Automatic locking – Linking to wider Access Control systems, automated locking can quickly change the security protocol and function of the door.
  • Automation – In some instances, heavy metal doors will require automation, to allow ease of access for all their users.

    Automation can also be useful, as Security Doors can be held open during low-security protocol periods. They can then be shut, and locked, during higher threat levels.
  • Single or multi-point locking systems – Steel doors provide the perfect vessel for a multitude of integrated, or surface-mounted locking systems.

    Not only does this provide better locking capabilities, but it can also mean that one door leaf can be locked, whilst the other can be left unlocked.

    In the instance of large cargo requiring movement, the second leaf could also be unlocked, granting larger volumes of traffic.
  • Vision panels and louvres – Once again, the security standards, are applicable to the whole door, not just the individual pieces of hardware, therefore doors with vision panels and louvres are specifiable to various security standards.

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