Security Ratings Explained: LPS1175 for Roller Shutters

LPS1175 is a Loss Prevention Standard developed by BRE (Building Research Establishment) and administered through the LPCB (Loss Prevention Certification Board). It is one of the UK’s most recognised security testing standards for physical security products, including roller shutters, doors and grilles.

Unlike basic compliance standards, LPS1175 is an attack test standard. That means the product is physically attacked using specific tools for a defined period of time to assess whether it can resist forced entry.

A certified roller shutter must:

• Withstand attack using defined tool sets
• Prevent the creation of an opening large enough for entry
• Be tested as a complete assembly (curtain, guides, bottom rail, locking system and fixings)

Certification applies to the full tested configuration — not just the shutter curtain alone.

LPS1175 has evolved over time. The two most commonly referenced versions are Issue 7 and Issue 8.

• Ratings classified as SR1 to SR8
• Tool categories labelled A–H
• Widely specified for many years
• Still present in older specifications

• Ratings classified as A1 to C5
• Revised tool group structure (A–K)
• More structured alignment between risk and tool sets
• Current active certification format

Issue 8 modernised the classification system and introduced clearer tool grouping. For new projects, Issue 8 is the current recognised standard, although Issue 7 products are still installed where previously specified.

Security ratings are based on the level of tools used and the time the product resists attack. The higher the rating, the more sophisticated the tools and attack methods involved.

Below is a practical breakdown relevant to roller shutters.

Designed to resist opportunist attempts using basic hand tools.

Typical applications:

• Low-risk retail
• Internal security shutters
• Areas prone to anti-social behaviour
• Storage areas within buildings

This level is intended to deter casual or spontaneous attempts at forced entry.

Resists more determined attack using heavier hand tools.

Commonly specified for:

• High street shops
• Offices
• Small warehouses
• Commercial units

SR2 is one of the most commonly installed security ratings in the UK for external retail premises.

Designed to resist sustained attack using tools such as:

• Crowbars
• Bolt croppers
• Drills

Typical applications:

• Jewellery shops
• Pharmacies
• High value retail
• Areas with previous break-ins

SR3 provides significantly greater resistance and is often required by insurers where higher value stock is present.

These ratings are tested against more aggressive and organised attack methods, including certain powered tools.

Used for:

• Critical infrastructure
• High-risk commercial premises
• Locations with repeat or targeted crime

For most retail and commercial properties, the required level typically falls between SR2 and SR3.

Testing is conducted in controlled conditions by approved laboratories. The product is attacked using defined tool kits relevant to the rating being tested.

The objective of the attacker is to create an opening large enough to allow entry within a specified “working time”.

Testing assesses:

• Curtain strength and deformation resistance
• Guide rail retention
• Bottom rail integrity
• Locking system performance
• Fixings into the supporting structure

Importantly, certification applies to the entire shutter assembly. If installation differs from the tested configuration, certification may not apply.

Choosing the correct security rating depends on risk assessment rather than simply selecting the highest level available.

Consider:

• Location (high street vs industrial estate)
• Value of goods or equipment stored
• Previous incidents of burglary
• Insurance requirements
• Whether the property is staffed overnight
• Visibility and lighting levels

As a general guide:

• Offices - SR1 / SR2
• High street retail shop SR1 / SR2
• Jewellery or high value store - SR3 / SR4
• Warehouse or distribution unit SR2+ depending on stock
  

If unsure, your insurer or security consultant may specify the required rating.

Many insurers recognise LPS1175 certification as a benchmark for burglary resistance. In some cases, they may mandate a specific rating as a condition of cover.

Security rated roller shutters may also contribute toward compliance with Secured by Design requirements when specified correctly.

It is important that:

• The product is LPCB certified
• The rating matches the tested configuration
• Installation follows manufacturer guidance

Certification applies to both product and installation method.

“Thicker steel means higher security.”
Not necessarily. Security ratings are determined by complete system performance, not just material thickness.

“Any electric shutter is secure.”
Motorisation does not equal security. Security performance depends on structural resistance and locking performance.

“Only the curtain is tested.”
Incorrect. The entire assembly, including guides and fixings, is tested.

“Higher rating is always better.”
Higher ratings increase cost and weight. The correct rating should match the risk profile of the premises.