LPS 1175 Issue 7 & Issue 8

LPS 1175 is a security standard that tests products against:

• Physical attack
• Forced entry attempts
• Tool-based assault
• Sustained manual attack

Products are tested by independent laboratories under controlled conditions using defined toolkits and attack methods.

The result is a security rating that reflects how long the product resisted attack using specific tools.

Issue 8 replaced Issue 7 and introduced a new classification structure.

Under Issue 7, products were rated:

• SR1
• SR2
• SR3
• SR4
• SR5
• SR6
• SR7
• SR8

Higher SR numbers indicated greater resistance to attack.

Issue 8 uses a new classification system based on:

• Security Rating (A–H)
• Attack classification
• Tool category used

Example format:

• B3
• C5
• D10

The letter indicates the tool category.The number indicates attack duration and resistance level.

Issue 8 provides more clarity around attack type and test methodology.

Issue 8 was developed to:

• Improve consistency in testing
• Align better with modern attack methods
• Provide clearer classification
• Differentiate between tool categories
• Improve specifier understanding

It reflects the evolving nature of criminal attack techniques.

Products are subjected to:

• Repeated physical attack
• Defined tool sets (e.g., screwdrivers, crowbars, grinders depending on rating)
• Time-based resistance measurement
• Attack against weak points
• Assessment of hardware, frame and fixings

Testing is not limited to the door leaf, the complete assembly is evaluated.

Products are subjected to:

• Repeated physical attack
• Defined tool sets (e.g., screwdrivers, crowbars, grinders depending on rating)
• Time-based resistance measurement
• Attack against weak points
• Assessment of hardware, frame and fixings

Testing is not limited to the door leaf, the complete assembly is evaluated.

While exact specification depends on risk assessment, broadly:

Lower Ratings (e.g., SR1 / A1)

• Low-risk commercial premises
• Internal security doors

Mid-Level Ratings (e.g., SR3 / B3–C5)

• Schools
• Retail
• Offices
• Light industrial

Higher Ratings (e.g., SR5+ / D10+)

• High-value retail
• Data centres
• Critical infrastructure
• Pharmaceutical sites
• Utility facilities

Security specification should always follow a risk assessment.

Many insurers recognise LPS 1175 certification.In some cases, insurance policies may:

• Require a minimum SR rating
• Specify LPCB-approved products
• Require third-party certification

Using uncertified products may invalidate insurance compliance.

LPS 1175 is often compared with:

• PAS 24 (typically residential focus)
• Secured by Design
• EN 1627 (European burglar resistance standard)

LPS 1175 is generally considered one of the most rigorous UK security test standards.

Certification applies to the tested configuration.

Security performance can be compromised by:

• Incorrect installation
• Substituted hardware
• Inadequate fixing into weak substrates
• Poor frame anchoring

Installation must follow manufacturer guidance and tested conditions.

• Specifying outdated Issue 7 ratings when Issue 8 applies
• Assuming higher steel thickness automatically means higher rating
• Ignoring frame and locking system requirements
• Not matching rating to actual risk level
• Installing high-rated doors into weak surrounding structure

Security is only as strong as the full installation.

If you are:

• Specifying security steel doors
• Upgrading warehouse security
• Replacing commercial roller shutters
• Meeting insurance requirements
• Working on education or public buildings

We can advise on appropriate security ratings and compliant installation.

Contact us to discuss your project.