Collection: Steel Security Doors

Steel security doors are available in a range of configurations depending on the required level of attack resistance, application, and additional performance requirements such as fire rating or glazing. The two primary recognised UK security standards are LPS 1175 and PAS 24.

LPS 1175 Security Rated Steel Doors

Tested by the Loss Prevention Certification Board (LPCB), LPS 1175 doors are graded according to resistance to forced entry using defined tool sets and attack times.

Common Security Ratings (Issue 7 / Issue 8)

• SR1 / A1 – Protection against opportunist attack using basic tools
• SR2 / B3 – Increased resistance against more determined attack
• SR3 / C5 – Protection against experienced intruders using heavier tools
• Higher grades (SR4 / D10 and above) – Specified for higher-risk or critical infrastructure environments

LPS 1175 doors are commonly used in:

• Warehouses
• Data centres
• Utility buildings
• Infrastructure sites
• High-risk commercial premises

PAS 24 Steel Security Doors

PAS 24 doors are tested for enhanced security performance, typically used in:

• Residential developments
• Apartment blocks
• Light commercial premises

They are often specified to meet building regulations and Secured by Design requirements.

Fire and Security Rated Steel Doors

Some steel security doors can combine:

• Security certification (LPS 1175 or PAS 24)
• Fire resistance (e.g. FD60 or FD120)

These are used where both attack resistance and compartmentation are required.

Single and Double Leaf Security Doors

Available as:

• Single leaf doors for standard access
• Double leaf doors for wider openings

All must remain within the certified tested configuration.

Glazed Security Steel Doors

Incorporate certified security rated glazing systems to maintain protection while allowing visibility.

Louvred Security Steel Doors

Designed with reinforced ventilation panels suitable for plant rooms or service areas requiring airflow.

External Security Steel Doors

Engineered for external use and may comply with:

• BS EN 14351-1 (external pedestrian doorsets)
• Weather and wind load performance requirements

Steel security doors can be tailored to meet specific threat levels, with selection based on the building’s risk assessment, insurance requirements, and operational needs. The correct security grade should always align with the assessed risk profile of the site.

Steel security doors can be tailored to meet specific risk levels, operational needs, and aesthetic requirements, provided all modifications remain within the scope of the certified test evidence (e.g. LPS 1175 or PAS 24).

Security Rating Level

Doors can be specified to different attack resistance levels, including:

• LPS 1175 (Issue 7 / Issue 8 – A1 to higher grades)
• PAS 24 (enhanced residential security)

The chosen rating should align with the site’s risk assessment and insurance requirements.

Door Configuration

• Single leaf doors (most common)
• Double leaf doors for wider openings
• Side panels or overpanels (where certified)
• Made to measure sizing

All configurations must match the tested certification scope.

Combined Fire and Security Performance

Where required, steel security doors can also be:

• FD60
• FD120

Fire and security performance must both be independently certified within the same tested door set.

Locking and Hardware Options

Customisable hardware may include:

• Multi-point locking systems
• Anti-drill cylinders
• High-security handles and escutcheons
• Internal thumbturns
• Panic hardware (where escape compliance is required)

All hardware must be approved within the security certification.

Security Rated Glazing

Doors can incorporate:

• Laminated or security rated glazing
• Certified glazing systems matching the door’s security grade
• Vision panels in various sizes (within test limits)

Reinforced Louvre Panels

Ventilation panels can be included where airflow is required, provided they are certified within the door’s security rating.

Finish and Appearance

Polyester powder coated finishes

• Wide RAL colour range
• Frame and leaf colour matching

External Performance Features

For external installations:

• Weather seals
• Insulated cores
• Compliance with BS EN 14351-1 (where required)
• Thermal performance upgrades

Access Control Integration

Security doors can integrate with:

• Electric strikes
• Magnetic locks
• Card readers
• Keypads
• Intercom systems

Fail safe escape must always be maintained where applicable.

Acoustic Upgrades

Optional acoustic cores can be specified where both security and sound reduction are required.Steel security doors can combine multiple performance features, including fire resistance, glazing, ventilation, and access control, provided the final configuration remains fully compliant with its certified security rating.

Steel security doors are specified where resistance to forced entry and controlled access is critical. The required security rating (e.g. PAS 24 or LPS 1175 A1–C5 and above) should align with the site’s risk assessment and insurance requirements.

Warehouses and Industrial Units

Commonly installed at:

• Main access points
• Rear service entrances
• Yard access doors
• Plant rooms

Higher LPS 1175 ratings are often specified where theft risk is elevated.

Commercial Buildings

Used for:

• Office entrances
• Server rooms
• Storage rooms
• Back-of-house access

PAS 24 may be suitable for lower risk areas, while LPS 1175 is specified for higher risk zones.

Residential and Multi Occupancy Developments

Specified for:

• Apartment entrance doors
• Communal entrances
• Basement and bin store access

Often compliant with PAS 24 and Secured by Design requirements.

Schools and Public Buildings

Installed in:

• IT rooms
• Secure storage areas
• Plant enclosures
• Perimeter access points

Security performance helps protect valuable equipment.

Data Centres and Infrastructure Sites

Higher grade LPS 1175 doors are commonly used in:

• Data rooms
• Utility buildings
• Telecom sites
• Energy infrastructure

These environments often require enhanced attack resistance.

Healthcare Facilities

Used for:

• Pharmacy storage
• Controlled access areas
• Secure service rooms

May combine security with fire resistance.

High Risk and Insurance Driven Sites

Specified where insurers require certified attack resistance, including:

• Distribution hubs
• High value storage facilities
• Sensitive government or defence buildings

External Perimeter Doors

Installed as:

• Side and rear building entrances
• Yard and loading bay access
• Secure compound access

Often combining weather resistance with security certification.

Steel security doors are selected wherever protecting assets, controlling access, and meeting insurer or regulatory security standards is essential. The appropriate certification level should always be determined by the building’s threat profile and operational requirements.

Steel security doors are engineered to provide certified protection against forced entry while maintaining durability and long-term performance in demanding environments.

Certified Attack Resistance

Independently tested to recognised standards such as:

• LPS 1175 (Issue 7 / Issue 8 – A1 and above)
• PAS 24

These certifications provide measurable resistance to physical attack using defined tool sets and time classifications.

Benefit: Clear, insurable, and risk based security performance.

Reinforced Steel Construction

Manufactured with heavy gauge steel leaf and frame assemblies, offering:

• High structural strength
• Impact resistance
• Resistance to distortion

Benefit:

• Long service life and robust physical protection.

Advanced Locking Systems

Can incorporate:

• Multi-point locking mechanisms
• Anti-drill cylinders
• Reinforced keeps and strike plates
• Tamper-resistant hardware

Benefit:

• Increased resistance to forced entry attempts.

Optional Fire Resistance

Available as combined fire and security-rated door sets (e.g. FD60 or FD120), tested to BS EN 1634-1.Benefit:

• Dual protection against fire spread and unauthorised access.

Security Rated Glazing Options

Where visibility is required, certified glazing systems can be included without compromising security rating.

Benefit:

• Maintains sight lines while preserving protection.

Reinforced Louvre Options

Security rated ventilation panels allow airflow in plant or service rooms.

Benefit: Maintains environmental requirements without weakening the door.

External Performance Capability

Designed for outdoor installations with:

• Weather seals
• Insulated cores
• Compliance with BS EN 14351-1 (where applicable)

Benefit:

• Security combined with environmental durability.

Access Control Integration

Compatible with:

• Electric strikes
• Magnetic locks
• Card readers
• Keypads and intercom systems

Benefit:

• Controlled entry while maintaining secure escape.

Custom Finishes

Available in a wide range of powder-coated colours and finishes.

Benefit:

• Security performance without compromising aesthetics.

Low Maintenance

Steel construction resists:

• Warping
• Rot
• Environmental damage

Benefit:

• Reduced long-term maintenance costs.

Steel security doors provide a robust, certified solution for protecting people, property, and assets, delivering measurable security performance tailored to the risk profile of the building.

Steel security doors must meet recognised security standards and, where applicable, comply with fire safety, escape, and external product regulations. The required compliance depends on the door’s location, risk profile, and whether additional performance features (fire rating, emergency escape, etc.) are specified.

Security Certification Standards

LPS 1175 (Issue 7 / Issue 8)

Tested by the Loss Prevention Certification Board (LPCB), this standard grades doors according to resistance against forced entry using defined tool sets and attack times (A1, B3, C5 and above).

Often required for:

• Higher risk commercial premises
• Warehouses
• Infrastructure sites
• Insurance driven specifications

PAS 24

Enhanced security performance standard commonly used for:

• Residential developments
• Apartment entrance doors
• Light commercial applications

Often linked to Secured by Design requirements.

Fire Resistance (If Specified)

Where the door also provides fire protection, it must be tested to:

• BS EN 1634-1
• BS EN 16034-1
• Common ratings include FD60 or FD120.

Fire and security performance must both be certified within the same door set configuration.

Emergency Escape Compliance (If Applicable)

If the steel security door forms part of an escape route, it must comply with:

• BS EN 1125 – Panic exit devices (public buildings)
• BS EN 179 – Emergency exit devices (staff-only areas)

Security measures must not prevent safe internal egress.

External Door Compliance

For external installations, doors may require:

• BS EN 14351-1 – External pedestrian doorsets
• CE and/or UKCA marking
• Declaration of Performance (DoP)

This covers weather resistance, wind load, and air permeability.

Smoke Control (Where Required)

If specified as a smoke control door, compliance may include:

• Smoke seals

Testing in accordance with relevant smoke leakage standards (e.g. BS EN 1634-3)

Access Control and Electrical Compliance

Where integrated with electronic locking systems:

• Systems must comply with electrical safety regulations
• Fail safe release must ensure safe egress

Must align with fire safety strategy

Installation to Certified Detail

To maintain compliance:

• Installation must follow manufacturer instructions
• Frame fixings must match tested detail
• Hardware must be certified and compatible
• No unauthorised modifications

Improper installation can invalidate certification.

Ongoing Inspection and Maintenance

Steel security doors should be included in routine building maintenance to ensure:

• Continued hardware performance
• Locking system integrity
• Seal condition

Compliance with fire and escape requirements (if applicable)

When correctly specified, installed, and maintained, steel security doors provide certified, measurable protection aligned with UK security standards, Building Regulations, and insurance requirements.

Steel security doors must be installed exactly in line with their certified test evidence (e.g. LPS 1175 or PAS 24) to maintain their declared level of attack resistance. Incorrect fixing, altered hardware, or unauthorised modifications can invalidate certification and insurance compliance.

Installation Requirements

Install to Certified Specification

Security-rated steel doors must be installed:

• Using the approved fixing methods and anchor types
• At the correct fixing centres
• Into suitable structural substrates (masonry, concrete, structural steel)
• With hardware exactly as tested

The complete door set, leaf, frame, locks, cylinders, glazing, and louvres — must match the certified configuration.

Structural Fixing and Frame Installation

• Frame must be square, plumb, and level
• Fixings must penetrate into structural material (not just render or plaster)No excessive gaps between frame and wall
• Packing materials must not compromise security performance

Improper fixing is one of the most common causes of failed security compliance.

Locking System Alignment

• Multi-point locking must align precisely with keeps
• Cylinders must be correctly installed and secured
• Strike plates must be reinforced and firmly fixed

Poor alignment reduces attack resistance and may cause premature wear.

Glazing and Louvre Installation (If Applicable)

• Only certified glazing systems may be fitted
• Louvre panels must match the tested security configuration

No retrofitted modifications outside certification scope

Escape Compliance (If Required)

If the door also forms part of an escape route:

• Panic hardware must comply with BS EN 1125
• Push pads must comply with BS EN 179

Internal egress must not be restricted by security upgrades

External Installation

For external security doors:

• Weather seals must be correctly fitted
• Thresholds installed properly
• Drainage considered
• Coatings protected from installation damage

Supply Only Considerations

Steel security doors can be supplied for installation by competent contractors, but:

• Installation must follow technical drawings exactly
• Security certification responsibility transfers to the installer
• Incorrect installation may void certification

Professional installation is strongly recommended for LPS 1175 doors.

Maintenance Requirements

Security doors require periodic inspection to ensure continued compliance and performance.

Routine Inspection

Check for:

• Smooth opening and closing
• Correct lock engagement
• Secure hinges and fixings
• Frame stability
• No signs of distortion or tampering

Lock and Hardware Maintenance

• Lubricate locking mechanisms
• Check cylinder operation
• Inspect handles and escutcheons
• Confirm multi-point systems engage fully

External Door Maintenance

• Inspect weather seals
• Check for corrosion
• Maintain powder-coated finish
• Ensure drainage paths are clear

Fire and Security Combination Doors (If Applicable)

If also fire-rated:

• Inspect intumescent and smoke seals
• Confirm self-closing function
• Ensure no unauthorised hardware changes

Record Keeping

For commercial and insurance-driven sites, maintenance should be logged to demonstrate ongoing compliance with security standards.

When correctly installed and regularly maintained, steel security doors provide reliable, certified protection aligned with LPS 1175, PAS 24, and relevant building safety requirements.

(Indicative pricing – excludes VAT unless stated)

The cost of steel security doors varies depending on the required certification level (PAS 24 or LPS 1175 grade), size, configuration (single or double leaf), glazing or louvre options, fire rating (if combined), and installation complexity.

PAS 24 Steel Security Doors

(Typically residential or light commercial use)

• Supply only: From £1,200 – £2,000
• Supplied and installed: From £2,200 – £3,800

Commonly specified for apartment blocks, communal entrances, and lower-risk commercial premises.

LPS 1175 A1 (Issue 8) / SR1 (Issue 7)

Protection against opportunist attack using basic tools.

• Supply only: From £1,800 – £2,800
• Supplied and installed: From £3,200 – £5,000

Suitable for warehouses, offices, and moderate-risk sites.

LPS 1175 B3 / SR2

Increased resistance to more determined attack.

• Supply only: From £2,500 – £3,800
• Supplied and installed: From £4,500 – £6,500

Often required for higher-value storage or insurance-driven specifications.

LPS 1175 C5 / SR3 and Above

Designed to resist experienced intruders using heavier tools.

• Supply only: From £3,500 – £6,000+
• Supplied and installed: From £6,000 – £10,000+

Used for infrastructure sites, data centres, and high-risk environments.

Combined Fire and Security Rated Doors

Where FD60 or FD120 fire resistance is required alongside security certification:

Additional cost:

• Typically £800 – £2,000+ depending on rating and configuration.

Double Leaf Security Doors

For wider openings:

• Supply only: From £3,000 – £6,500+
• Supplied and installed: From £5,500 – £11,000+

Glazing and Louvre Options

Security-rated glazing or reinforced louvre panels may add:

• £400 – £1,500+, depending on size and certification level.

What Affects Final Pricing

• Security grade (PAS 24 vs LPS 1175 level)
• Door size and configuration
• Fire resistance (if combined)
• Glazing or ventilation requirements
• Access control integration
• External weather performance
• Installation access and structural preparation

Getting an Accurate Quote

Because steel security doors are certified products tested to specific configurations, accurate opening sizes and required security level are essential. A site survey is recommended to ensure compliance with insurer requirements, building regulations, and correct installation detail.