Collection: Security Window Mesh

Security mesh grilles are available in several configurations depending on the required security level, environment, and installation method.

Standard Welded Mesh Grilles

Constructed from heavy duty welded steel mesh within a reinforced frame.

Suitable for residential and light commercial use

• Provides strong physical deterrence
• Available in various mesh aperture sizes

Commonly used for ground floor and basement windows.

Reinforced Heavy Duty Mesh Grilles

Manufactured using thicker wire gauge mesh and strengthened perimeter frames.

• Increased resistance to cutting and leverage
• Designed for higher-risk commercial and industrial sites
• More robust fixing methods

Suitable for plant rooms, warehouses, and exposed areas.

LPS 1175 Security Rated Mesh Grilles (Levels 1–3)

Independently tested by LPCB to graded forced-entry resistance standards.

• Available in Security Levels 1–3
• Secured by Design
• Certification applies to grille design and fixing method
• Must be installed in accordance with tested specification

Typically specified where insurers or risk assessments require certified protection.

Internal Security Mesh Grilles

Installed internally within the building envelope.

• Discreet appearance
• Reduced weather exposure

Suitable for offices, schools, and commercial premises

External Security Mesh Grilles

Installed externally onto the façade or within window reveals.

• Provides visible deterrence
• Often used in higher risk locations
• Protects glass

Requires corrosion resistant finishes

Made to Measure Mesh Grilles

All types are manufactured to suit specific opening sizes, including:

• Standard rectangular windows
• Basement openings
• Larger commercial apertures

Security mesh grilles can therefore range from standard welded mesh protection to independently tested LPS 1175 Level 3 high security systems, with internal or external installation options depending on the level of risk and operational requirements.

Security mesh grilles can be tailored to meet specific security requirements, structural conditions, and aesthetic preferences, while maintaining strength and, where required, certified performance.

Security Level Specification

Available as:

• Standard deterrent mesh systems
• Reinforced heavy-duty mesh
• LPS 1175 security-rated mesh grilles (Levels 1–3)

The chosen level determines mesh gauge, aperture size, frame reinforcement, and fixing method.

Mesh Specification Options

• Mesh Aperture Size
• Smaller apertures for increased resistance
• Larger apertures for improved visibility and airflow
• Wire Thickness
• Standard wire gauge
• Heavy gauge mesh for higher security
• Reinforced Framing
• Standard perimeter frames
• Strengthened frames for higher risk environments

For LPS1175 security rated systems, mesh and frame must remain within certified configuration.

Made to Measure Fabrication

• Custom built to exact opening dimensions
• Suitable for rectangular and non standard shapes
• Designed for masonry, steel, or timber substrates

Ensures accurate fit and structural stability.

Installation Options

• Face fixed (surface mounted)
• Reveal fixed (within window recess)
• Internal or external installation

Installation method depends on structural conditions and required security level.

Finish & Coating

• Polyester powder-coated finish
• Wide RAL colour range
• Internal/external colour matching
• Corrosion-resistant coatings for exposed environments

Allows coordination with window frames or building façade.

Fixing & Anti Tamper Options

• Anti tamper fixings
• Concealed fixings
• Security rated anchors (for LPS 1175 systems)

Correct fixing is critical to maintaining security performance.

Security mesh grilles can therefore be customised in mesh specification, frame reinforcement, finish, fixing method, and security rating, from standard welded mesh protection to independently tested high security systems up to LPS 1175 Level 3.

Security mesh grilles are specified where a strong, permanent physical barrier is required, while still maintaining visibility and airflow. They are suitable across residential, commercial, industrial, and higher risk environments.

Residential Properties

Commonly installed on:

• Ground floor windows
• Basement windows
• Rear and side elevations
• Vulnerable access points

Provides protection against opportunist intrusion without blocking natural light.

Commercial Buildings

Used to secure:

• Office windows
• Rear service areas
• Storage rooms
• Ground level glazing

Offers durable protection outside working hours.

Schools & Public Buildings

Installed on:

• Classrooms
• IT suites
• Libraries
• Community centres

Helps prevent vandalism and protect valuable equipment.

Industrial & Warehouse Facilities

Fitted to protect:

• Plant rooms
• Machinery enclosures
• Stock storage areas
• Service yards

Reinforced or LPS1175 security rated systems are often specified in higher risk locations.

Utilities & Infrastructure Sites

Used in:

• Substations
• Telecom buildings
• Water treatment facilities
• Energy centres

Frequently specified to LPS 1175 Levels 2–3 where graded security is required.

Communal & Multi Occupancy Developments

Installed in:

• Bin stores
• Car park windows
• Basement areas
• Shared service rooms

Provides long term, low-maintenance security.

Data Centres & High Risk Environments

Specified where:

• Insurers require certified protection
• Risk assessments demand tested security systems

Often installed as LPS 1175 security rated mesh grilles. Security mesh grilles are therefore suitable for protecting windows and openings across a wide range of applications, particularly where permanent protection is required without sacrificing light and ventilation.

Steel security mesh provides a robust, long term solution for protecting windows and vulnerable openings while maintaining visibility and airflow. Its welded construction and reinforced framing offer strong resistance to intrusion without the bulk of solid barriers.

High Strength Construction

Manufactured from welded steel wire mesh within a reinforced perimeter frame.

Benefit:Creates a strong physical barrier that resists cutting, leverage, and impact.

Security Rated Options Available

Available in standard and LPS 1175 certified configurations (Levels 1–3).

Benefit:Provides independently tested, graded protection suitable for higher risk commercial and infrastructure sites.

Maintains Visibility

Open mesh design allows clear sightlines through the protected opening.

Benefit:Improves security without creating a “boarded-up” appearance.

Ventilation

Mesh apertures allow airflow to pass through.

Benefit:Suitable for plant rooms, storage areas, and locations requiring ventilation.

Low Maintenance

Static construction with no moving parts.

Benefit:Minimal servicing requirements and reduced long-term maintenance costs.

Custom Finishes

Available in polyester powder-coated finishes across a wide RAL colour range.

Benefit:Can match building façades, window frames, or corporate colour schemes.

Durable & Long Service Life

Heavy duty steel construction with corrosion-resistant coatings for external environments.

Benefit:Reliable long term protection even in exposed or demanding conditions.

Made to Measure

Custom manufactured to suit specific opening sizes and structural conditions.

Benefit:Ensures precise fit and maximises security performance.

Steel security mesh offers a balance of strength, visibility, and ventilation, making it an effective solution for residential, commercial, industrial, and high security applications.

Security mesh grilles must comply with relevant security certification standards, fire safety requirements, building regulations, and structural safety principles, depending on the installation location and risk profile.

Security Certification – LPS 1175 (Levels 1–3)

Where higher levels of protection are required, steel security mesh grilles can be specified to:

• LPS 1175 Issue 7 or 8
• Certified to Levels 1–3
• Independently tested by LPCB (Loss Prevention Certification Board)
• Secured by Design

Certification applies to:

• Mesh specification
• Frame construction
• Fixing method

Installation must follow the approved fixing detail used during testing. Any deviation can invalidate certification.

Fire Safety – Approved Document B (England & Wales)

If mesh grilles are installed over:

• Designated escape windows
• Openings forming part of a means of escape
• Windows required for firefighting access
• They must not obstruct safe egress.

In residential properties, escape windows must remain usable unless alternative compliant escape provision exists.

Security must never compromise life safety.

Accessibility – Approved Document M

Where installed along accessible routes:

• Must not reduce required opening widths
• Must not create trip or impact hazards
• Must not obstruct compliant door or escape hardware

Structural Safety & Installation

• Must be securely fixed into structural substrate (brick, concrete, steel)
• Fixings must be suitable for applied loads
• Installation must resist leverage and forced entry
• No reliance on non structural finishes

For LPS rated systems, fixing must match tested configuration.

Workplace Safety Considerations

In commercial environments:

• Installation must not create sharp edges
• Guards must not interfere with emergency exit hardware
• Staff must understand access and locking arrangements (where relevant)

External Durability

For externally installed mesh grilles:

• Corrosion resistant finishes required
• Weather resistant fixings must be used
• Installation must maintain long-term structural integrity

When correctly specified and installed, security mesh grilles can meet graded security certification requirements while remaining compliant with fire safety, accessibility, and structural safety regulations.

Security mesh grilles must be securely installed to ensure structural integrity, long-term durability, and where specified, compliance with LPS 1175 security certification.

Installation Requirements

Structural Fixing

• Must be fixed into structural substrate (brick, block, concrete, or structural steel)
• Correct anchor type and fixing centres must be used
• Opening must be structurally sound and load-bearing
• No reliance on render, cladding, or non-structural finishes

For LPS 1175 certified mesh grilles (Levels 1–3), installation must follow the approved fixing detail used during testing.

Alignment & Fit

• Frame must be level and square
• Minimal perimeter gaps to prevent leverage points
• Mesh panel must sit flush within frame
• All welds and joints inspected prior to installation

Incorrect alignment can compromise security performance.

Anti Tamper Fixings

Use of security rated anchors where required

• Concealed or protected fixings
• Tamper resistant bolts

Essential for higher risk or certified installations.

Escape & Fire Considerations

If installed over windows that:

• Serve as emergency escape windows
• Form part of a designated escape route
• The installation must not obstruct safe egress unless alternative compliant provision exists.

Life safety requirements must always take priority over security.

Supply Only Considerations

If supplied without installation:

• Installer assumes responsibility for structural suitability
• Installation must follow technical drawings precisely
• LPS1175 certified systems must be installed in accordance with tested fixing specification

Professional installation is strongly recommended for security rated systems.

Maintenance Requirements

Security mesh grilles are low maintenance due to their static design but should be inspected periodically to maintain performance and compliance.

Routine Inspection (Annually Recommended)

Check for:

• Secure fixings
• Frame stability
• Mesh integrity
• Weld condition
• Signs of corrosion
• Damage or deformation

Higher risk or exposed environments may require 6 monthly inspections.

External Maintenance

• Inspect powder coated finish
• Touch up any chipped or damaged areas
• Check for corrosion or rust
• Ensure drainage around the frame is clear

Security Integrity (For LPS1175 Systems)

• Confirm no unauthorised modifications
• Inspect anchorage and frame reinforcement
• Replace damaged components promptly

When correctly installed and periodically inspected, security mesh grilles provide long-term, reliable protection with minimal maintenance while maintaining compliance with applicable security and safety standards.

(Indicative UK pricing – excludes VAT unless stated)

The cost of security mesh grilles depends on opening size, mesh specification, frame reinforcement, security level (standard or LPS 1175 rated), finish, and installation conditions.

Standard Welded Steel Mesh Grilles

Suitable for residential and light commercial applications.

• Supply only: From £180 – £350 per window
• Supplied and installed: From £400 – £750 per opening

Based on a typical window up to approx. 1200mm x 1200mm.

Reinforced Heavy Duty Mesh Grilles

Thicker wire gauge and reinforced perimeter frame.

• Supply only: From £350 – £700 per opening
• Supplied and installed: From £700 – £1,200 per opening

Suitable for higher-risk commercial and industrial environments.

LPS 1175 Security Rated Mesh Grilles (Levels 1–3)

Independently tested by LPCB for graded forced-entry resistance.

Level 1–2

• Supply only: From £600 – £1,000 per opening
• Supplied and installed: From £900 – £1,600 per opening

Level 3

• Supply only: From £900 – £1,800+ per opening
• Supplied and installed: From £1,400 – £2,800+ per opening

Higher levels require heavier mesh, reinforced frames, and certified fixing methods.

Larger Commercial or Industrial Openings

For plant rooms or larger apertures:

• Installed from £900 – £3,500+ per opening

Pricing varies depending on size and security rating.

What Affects Final Pricing

• Opening dimensions
• Mesh aperture size and wire thickness
• Security level (standard vs LPS 1175 Level 1–3)
• Powder-coated finish
• Internal vs external installation
• Structural substrate condition
• Access and installation complexity

Getting an Accurate Quote

Security mesh grilles are made to measure. Final pricing depends on exact opening dimensions, required security rating, and installation conditions. A site survey is recommended to confirm structural fixing suitability and compliance requirements before issuing a final quotation.