Collection: Window Grilles

Window grilles are available in several formats depending on the
required security level, permanence, and operational flexibility. Our
range covers both standard deterrent solutions and independently tested
high security systems.

Fixed Window Bars

Permanently installed steel bar grilles fixed directly to the building structure.

Suitable for:

• Ground floor windows
• Basements
• Vulnerable access points

Provides strong physical protection with minimal moving parts.

Removable Window Bars

Steel bar systems designed to be removed internally when required.

Suitable for:

• Residential properties
• Escape windows
• Locations requiring occasional access

Offers security while maintaining emergency access flexibility.

LPS 1175 Security Rated Window Bars (Up to Level 4)

Independently tested by LPCB to provide graded resistance to forced entry.

• Available up to LPS 1175 Level 4
• Secured by Design
• Certification applies to the complete installation

Suitable for higher risk commercial and infrastructure applications.

Security Mesh Grilles (Up to LPS 1175 Level 3)

Heavy-duty welded steel mesh panels providing strong resistance to attack.

• Available in standard or certified LPS 1175 configurations
• Tested up to Security Level 3
• Security By Design

Ideal where smaller aperture protection is required.

Retractable Security Window Grilles (Up to LPS 1175 Level 3)

Collapsible lattice systems that slide open when not in use.

• Fully tracked or trackless systems
• Available up to LPS 1175 Level 3
• Secured by Design

Suitable for retail shopfronts, internal compartmentation, and wider openings.

Louvred or Ventilated Grilles

Designed to provide airflow while maintaining security.

• Common in plant rooms and service areas.

Window grilles can therefore be specified as fixed, removable, retractable, mesh, or security rated systems with options ranging from visual deterrent protection to independently tested high security solutions up to LPS 1175 Level 3.

Window Security grilles can be tailored to suit the required security level,
building type, and aesthetic preference, while ensuring structural
strength and compliance where certification is required.

Security Level Specification

Available as:

• Standard deterrent grilles
• LPS 1175 security-rated systems
• Window bars and mesh grilles up to Level 3
• Retractable grilles up to Level 3

The chosen level influences bar thickness, mesh gauge, fixing method, and reinforcement.

Bar & Mesh Design Options

Window Bars

• Vertical bar design
• Horizontal bar design
• Decorative bar layouts (where suitable)
• Internal or external fixing

Mesh Grilles

• Welded steel mesh panels
• Different mesh apertures
• Reinforced perimeter frames

Design must remain within certified scope for LPS1175 security rated systems.

Retractable Window Grille Configuration

• Single stack (one-way opening)
• Bi parting (meeting in the centre)
• Fully tracked (top and bottom track)
• Trackless systems (no bottom track)

Allows adaptation to narrow openings or wide shopfronts.

Removable & Hinged Options

• Internal quick-release removable bars
• Hinged grille panels
• Lockable removable sections

Useful where access or emergency escape flexibility is required.

Finish & Appearance

• Polyester powder-coated finish
• Wide RAL colour range
• Match to window frames or building façade
• Internal/external colour options

Suitable for both residential and commercial environments.

Made to Measure Sizing

• Custom built to structural opening
• Suitable for irregular window shapes
• Designed for masonry, steel, or timber substrates

Locking Options

• Keyed locking systems
• Multi point locking (where applicable)
• Security rated cylinders

Lock selection must match certified configuration for LPS1175 systems.

Window grilles can therefore be customised in design, finish, configuration, and security level, from simple fixed bars to independently tested high-security systems, while ensuring performance remains aligned with the required risk level.

Window grilles are used wherever windows present a security risk, particularly at ground level or in exposed locations. They provide a physical barrier while maintaining light and ventilation.

Residential Properties

Installed on:

• Ground floor windows
• Basement windows
• Rear and side elevations
• Alleyway-facing glazing

Provides protection against opportunist intrusion while preserving natural light.

Commercial Buildings

Used to secure:

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

Offers after hours protection without fully enclosing the space.

Schools & Educational Buildings

Fitted to:

• Classrooms
• IT suites
• Sports halls
• Community facilities

Helps reduce vandalism and protect valuable equipment.

Industrial & Warehouse Facilities

Installed on:

• Plant rooms
• Machinery enclosures
• Warehouse windows
• Service yards

Heavy duty or security rated grilles may be specified in higher risk areas.

Utilities & Infrastructure

Used to protect:

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

Often specified to LPS 1175 Levels 2–4 where graded security is required.

Communal & Multi Occupancy Buildings

Installed in:

• Apartment blocks
• Bin stores
• Basement areas
• Shared service rooms

Provides long term, low-maintenance security.

High Risk & Data Environments

Specified where insurers or risk assessments require certified protection.

Security-rated window grilles can be tested to LPS 1175 Levels 1–4 for enhanced protection.

Window grilles are therefore suitable across residential, commercial, education, industrial, and infrastructure applications, offering scalable protection based on the level of risk and operational requirements.

Window grilles provide a practical and durable method of protecting
vulnerable openings while maintaining visibility and ventilation. They
are available from standard deterrent systems through to independently
tested high security solutions.

Physical Intrusion Protection

Manufactured from steel bars, reinforced frames, or welded mesh panels.

Benefit:Creates a strong physical barrier that resists opportunist and, where specified, deliberate forced entry.

LPS 1175 Security Rated Options

• Window bars and mesh grilles available up to LPS 1175 Level 4
• Retractable grilles available up to Level 3

Benefit:Provides independently tested, graded security performance suitable for higher risk environments.

Maintains Visibility & Airflow

Open bar and mesh construction allows light and ventilation to pass through.

Benefit: Protects the property without blocking natural light or creating a “boarded up” appearance.

Fixed, Removable, or Retractable Options

Available as:

• Permanently fixed grilles
• Internally removable bars
• Sliding retractable systems

Benefit:Flexibility to suit operational and escape requirements.

Custom Finishes

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

Benefit:Can match window frames or building façade for a discreet or coordinated appearance.

Made to Measure Construction

Custom built to fit specific window openings.

Benefit:Ensures precise fit and structural strength for non standard window sizes.

Durable & Low Maintenance

Heavy duty steel construction with corrosion-resistant finishes.

Benefit:Long service life with minimal maintenance requirements.

Compatible with Escape & Safety Requirements

Removable or fire exit compatible systems available where required.

Benefit:Maintains life safety compliance while providing security.

Security grilles offer a cost-effective, scalable security solution, from simple
deterrent protection to certified high-security systems, while preserving visibility, airflow, and architectural integrity.

Window grilles must meet relevant security certification standards,
fire safety requirements, escape regulations, and building regulations,
depending on how and where they are installed.

Security Certification (Where Specified)

• LPS 1175 (Levels 1–3)
• Independently tested by LPCB (Loss Prevention Certification Board)
• Secured by Design
• Graded resistance to forced entry
• Certification applies to the complete grille system and fixing method
• Installation must follow approved fixing detail
• No unauthorised modifications permitted

Required in higher risk commercial, infrastructure, or insurer driven applications.

Fire Safety & Escape Compliance

If security grilles protect openings that form part of an escape route:

• Must not obstruct compliant means of escape
• Removable systems must allow internal release
• Fire exit grilles must not reduce required escape width

Security must never compromise life safety.

Building Regulations (England & Wales)

• Approved Document B – Fire Safety
• Escape routes must remain safe and usable
• Windows required for emergency escape must remain operable
• Grilles must not compromise compartmentation
• Approved Document M – Access to and Use of Buildings
• Bottom tracks must not create trip hazards
• Accessibility and threshold compliance must be maintained

Trackless systems may be required in accessible routes.

Structural & Installation Safety

• Must be securely fixed into structural substrate
• Fixings must be appropriate for masonry, steel, or timber
• Installation must prevent leverage points
• No sharp edges or unsafe protrusions

For LPS security rated systems, installation must match certified detail.

Workplace Safety Considerations

In commercial settings:

• Staff must be trained in safe operation
• Locking procedures should be controlled
• Emergency release procedures must be understood

External Performance

Where installed externally:

• Corrosion-resistant finishes required
• Fixings must be weather resistant
• Structural suitability must be confirmed

When correctly specified and installed, security grilles can meet graded security certification requirements while maintaining compliance with fire safety, escape regulations, accessibility standards, and structural safety principles.

Window grilles must be correctly installed to ensure structural integrity, smooth operation (where movable), and where specified,
compliance with security certification such as LPS 1175 Levels 1–3.

Installation Requirements

Structural Fixing

• Must be securely fixed into structural substrate (brick, block, concrete, or structural steel)
• Correct fixing centres and anchor types must be used
• Opening must be square and structurally sound
• No reliance on non-structural finishes for load support

For LPS 1175 rated grilles, installation must match the certified fixing specification.

Fixed & Mesh Grilles

• Frame must be level and plumb
• Anti-tamper fixings should be used
• Fixings concealed or protected where required
• Perimeter gaps must be minimised
• Incorrect fixing can significantly reduce security performance.

Removable Grilles

• Internal release mechanism must function correctly
• Locking system must engage fully
• Removal process must be simple but secure
• If protecting escape windows, internal release must remain unobstructed.

Retractable Grilles

• Top track securely fixed to structural head
• Bottom track (if fitted) aligned and fixed accurately
• Trackless systems require precise side guide alignment
• Grille must slide freely without binding

LPS-rated retractable systems must follow approved fixing detail.

Escape & Fire Route Considerations

Where grilles protect escape openings:

• Must not reduce required escape width
• Must allow immediate internal release (if applicable)
• Must not obstruct compliant emergency exit hardware
• Life safety must take priority over security.

Supply Only Considerations

If supplied without installation:

• Installer assumes responsibility for structural suitability
• Installation must follow manufacturer technical drawings
• Certified systems must be installed to approved fixing details

Professional installation is recommended for security rated systems.

Maintenance Requirements

Security grilles are low maintenance but require periodic inspection to ensure continued performance and safety.

Routine Inspection (Recommended Annually or 6-Monthly in Commercial Settings)

Check for:

• Secure fixings
• Frame stability
• Lock engagement
• Signs of corrosion
• Damage or deformation
• Mesh or bar integrity

Higher risk sites may require quarterly checks.

Cleaning & Lubrication (Retractable Systems)

• Keep tracks free from debris
• Lightly lubricate pivot points and locks
• Avoid over-lubrication

Lock & Hardware Maintenance

• Inspect cylinders and locking mechanisms
• Replace worn components promptly
• Ensure internal release mechanisms function correctly

External Maintenance

• Inspect powder coated finish
• Check for corrosion
• Maintain protective coatings where necessary

When correctly installed and routinely maintained, security grilles provide long-term, reliable protection while remaining compliant with security certification, fire safety, and building regulation requirements.

(Indicative UK pricing – excludes VAT unless stated)

The cost of security grilles depends on type (fixed, removable, mesh, retractable),
security level (standard or LPS 1175 rated), size of opening, and installation conditions.

Fixed Window Bars (Standard)

Suitable for residential and low–medium risk applications.

• Supply only: From £180 – £350 per window
• Supplied and installed: From £350 – £650 per window

Typical small ground-floor window.

Removable Window Bars

Internal removable systems for added flexibility.

• Supply only: From £250 – £450 per window
• Supplied and installed: From £450 – £800 per window

Pricing depends on release mechanism and locking system.

LPS 1175 Security Rated Window Bars (Up to Level 4)

Independently tested high-security systems.

• Supply only: From £600 – £1,200 per window
• Supplied and installed: From £900 – £1,800 per window

Cost varies depending on security level (Level 1–4) and opening size.

Security Mesh Grilles

Standard Mesh Grilles

• Supply only: From £220 – £400 per window
• Supplied and installed: From £400 – £750 per window

LPS 1175 Rated Mesh (Up to Level 4)

• Supply only: From £750 – £1,500 per opening
• Supplied and installed: From £1,100 – £2,200+ per opening

Retractable Security Grilles (Up to LPS 1175 Level 3)

Priced by metre width:

• Standard retractable installed: From £850 – £1,200 per metre width
• LPS Level 1–3 installed: From £1,200 – £3,000 per metre width
• A typical 2m wide shopfront grille:Installed from £1,800 – £4,500+

What Affects Final Pricing

• Security level (standard vs LPS 1175 Level 1–3)
• Window or opening size
• Fixed vs removable vs retractable
• Powder-coated finish
• Installation access
• Structural substrate condition
• Fire escape or internal release requirements

Getting an Accurate Quote

Window grilles are made to measure, and pricing depends on exact opening dimensions and required security rating. A site survey is recommended to confirm structural fixing suitability, escape compliance, and final installation cost.