What Sunray Engineering does

Sunray Engineering is a UK-based designer, manufacturer, and installer of steel security doors, louvre systems, and related physical security products serving commercial, industrial, utility, and critical infrastructure end markets. Founded in 1954 and headquartered in Ashford with a registered office in Willenhall, the company is a privately held subsidiary of Sweden-based ASSA ABLOY Group, the global leader in door opening solutions. Its product portfolio spans security-rated steel doors (SR1–SR6), steel and timber fire-rated doors (1–4 hour ratings), blast and ballistic doors (FB1–FB7), louvre doors and facades, GRP trench covers, security roller shutters, window barsets, and the Prestige Timber Fire Doors range, organised under proprietary brands including ExcluLouvre®, ExcluDoor®, SaverDoors®, FireLock®, and ExcluBarset®.

The company's core technology centres on certified physical security and ventilation engineering, with a proprietary interlocking stackable louvre panel system and the FireLock® doorset achieving 240-minute fire integrity alongside 34.2 kPa blast resistance — described in source material as a groundbreaking result for critical infrastructure. All manufacturing and installation are handled in-house using factory-skilled operatives certified to LPCB LPS 1271, with specialist transport (Moffett, HIAB) deployed for nationwide site delivery.

The business model is direct enterprise project sales to utility companies, DNOs/IDNOs, government/defence contractors, data centres, financial institutions, and industrial customers, with revenue generated from product sales bundled with installation, on-site painting, fire door inspection, and the OneCall maintenance service. Pricing is quote-based and specification-driven, with architects and specifiers serving as key influencers. Gaining entry to regulated utility procurement (UKPN EAS 07-0000a, Achilles UVDB) is the primary commercial gatekeeper. Revenue is not publicly disclosed.

Name

Sunray Engineering

Legal name

Sunray Engineering Ltd

Website

https://sunraydoors.co.uk

Company type

Private

Founded year

1954

Operating status

Operating

Headcount range

51–100 employees

Short description

Sunray Engineering is a UK-based subsidiary of ASSA ABLOY that designs, manufactures, and installs certified steel security doors, louvre systems, fire doors, and blast/ballistic doors primarily for utility companies, critical infrastructure operators, government/defence, and industrial customers.

Ownership category

akta.pro rank

Product category

Steel Security Doors & Physical Security Manufacturing

NAICS

Metal Window and Door Manufacturing (332321)

SIC

Metal Doors, Sash, Frames, Moldings & Trim (3442)

akta.pro primary industry

Commercial & Industrial Doors (Sectional, High-Speed, Fire, Security) (IMADAIAF)

Keywords

• Steel security doors
• Fire-rated doors
• Louvre systems
• Blast ballistic doors
• Critical infrastructure doors

Headquarters

HQ city

Ashford

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Steel Security Doors and Louvre Systems Manufacturing and Installation: Design, manufacture, and installation of steel doors and louvre systems for commercial, industrial, and utility applications. Products include security doors, fire doors, louvre doors, blast-resistant doors, and associated access solutions. Revenue generated through product sales with optional installation services.
2. Installation and Maintenance Services: Nationwide delivery and installation services performed by qualified factory-skilled operatives. LPS 1271 certified installation. OneCall maintenance service offering comprehensive service and maintenance cover.
3. On-site Painting and Finishing Services: On-site powder coating and painting services using AkzoNobel range of paints. Architectural marine grade polyester powder coat finishes as standard across product range.
4. Survey and Consultation Services: Site survey services, technical consultation, and expert consultation for ballistic door specifications. Fire door inspection services by FDIS-approved inspectors.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Sunray Engineering designs, manufactures, and installs certified steel security doors (LPCB LPS 1175 SR1-SR6), fire-rated steel and timber doors (1-4 hour ratings), blast and ballistic doors (EN 1522/1523 FB1-FB7), and proprietary steel louvre door and facade systems for critical infrastructure and commercial buildings. Products are supplied with nationwide in-house installation, on-site painting, fire door inspection, and ongoing maintenance (OneCall) services.

Product overview

Sunray Engineering is a leading UK designer, manufacturer, and installer of steel doors and louvre systems with over 70 years of experience. The company operates as part of the ASSA ABLOY Group and offers a comprehensive portfolio of physical security products organized around three main categories: security-rated doors (ExcluDoor® security doors, Blast & Ballistic doors, Security Rated roller shutters), fire-rated doors (Steel fire doors, Prestige timber fire doors, SaverDoors® FR), and ventilation systems (Louvre doors & systems, Louvre facades, ExcluBarset® window barsets). The product range spans from SR1 to SR6 security ratings and 1-4 hour fire ratings, with specialized offerings for utility infrastructure including UKPN-approved doors and DNO/IDNO solutions. Supporting services include nationwide installation, on-site painting, door maintenance (OneCall), and fire door inspection. The company holds ISO 9001, ISO 14001, ISO 45001 certifications and LPS 1175, Secured by Design, and NPSA accreditations.

Differentiator

Problem solved

Functional benefit

Brands

• Prestige Timber Fire Doors: Sunray Engineering's timber fire door division offering FD30, FD60, and FD120 certified fire-rated timber doors with BM TRADA Q-Mark certification for commercial and critical infrastructure applications.

Products and services

• LPS 1175 SR2 Fully Louvered door-set Steel security louvre doors certified by LPCB to LPS 1175 Issue 7 Levels SR2 and SR3, combining security with ventilation through approximately 42% free air flow. Features anti-vermin mesh, fully welded or demountable framework, and 100x50mm box frame. Targeted at utility substation and critical infrastructure ventilation requirements.
• Steel Security Doors (ExcluDoor®) Certified steel security doors providing protection for residential and commercial properties, available in single, double, or bespoke configurations. Tested to LPS 1175 standards with multi-point locking systems, anti-drill plates, and reinforced frames. Ranges from SR1 to SR6 security ratings.
• Steel Fire Doors British-manufactured steel fire doors certified for 1-4 hour fire resistance meeting BS 476 standards. Combines robust construction with intumescent seals and fire-resistant cores. Available in single, double, and bespoke configurations for commercial and industrial buildings.
• Steel Louvre Doors & Systems Interlocking, stackable louvre system designed to suit various structural openings incorporating plain or fully louvred door-sets. Provides ventilation solutions for energy providers with aesthetically pleasing design.
• Louvre Facades Unique system incorporating both doors and louvres within the same system, available fully or partially LPS 1175 security rated. Provides aesthetically pleasing ventilation solutions with approximately 50% airflow, designed for utilities, commercial, and industrial applications.
• Steel Commercial Doors Extensive range of commercial doorsets and roller shutters, all bespoke and manufactured to customer-specific requirements. Includes heavy-duty secure doorsets, sliding doors, and security rated roller shutters.
• SaverDoors® Most flexible steel door product within Sunray's range, offering options on frames, hinges, locking, vision panels, solid or louvered panels, and virtually any colour choice. Budget-friendly steel doorsets with 44mm twin tray construction door leaf, available with 1-4 hour fire rating.
• Prestige Fire Doors (Timber) Certified timber fire door solutions for commercial and critical infrastructure projects, delivering FD30, FD60, and FD120 fire-rated protection. BM TRADA Q-Mark certified with in-house FDIS-approved inspectors.
• Steel Industrial Doors Heavy-duty industrial doorsets combining superior durability with bespoke design, featuring reinforced frames, industrial-grade hinges, and weather-resistant finishes. Custom-manufactured for demanding commercial and manufacturing environments.
• GRP Trench Cover Gratings Corrosion-resistant walkway solutions meeting BS EN 124 standards, ideal for industrial, commercial and utility applications. Available in pressed, welded, or GRP gratings with custom sizes up to 1220mm x 3660mm and 50mm thickness.
• ExcluBarset® Window Barsets Security window barsets certified by LPCB to LPS 1175 Issue 8 Security Classifications B3 (SR2), C5 (SR3), and D10 (SR4). Designed to protect property and assets with three installation methods: internal face fix, external face fix, and reveal fix.
• Blast & Ballistic Doors Security-rated doors from FB1 to FB7 protecting government, military, financial, and data centre facilities. Certified to EN 1522 and EN 1523 standards with precision engineering for extreme environments, offering certified protection against forced entry and ballistic threats.
• Security Rated Roller Shutter Doors High-security roller shutters meeting SR1 to SR4 standards for commercial, retail, and industrial premises. Features reinforced guide channels, anti-lift devices, and high-grade steel laths with multiple locking points. Certified by LPCB to LPS 1175.
• DNO/IDNO Approved Doors Door solutions trusted by over 11 Distribution Network Operators (DNOs) and Independent Distribution Network Operators (IDNOs) for critical infrastructure. Includes louvred doorsets, louvre panel secure, and fire-rated options.
• UK Power Network Doors (UKPN) Door solutions exclusive to UK Power Networks; only UK manufacturer accredited to provide louvre systems to UK Power Networks. Comprehensive door solutions for England's largest electricity distribution network including Excludoor security doors and exclusive louvre systems.
• Delivery & Installation Services Nationwide delivery and installation service for all steel security doors and louvre systems, carried out by qualified factory-skilled operatives (not sub-contractors). Certified by LPCB/BRE to LPS 1271 for security and fire doors.
• On-site Painting Services On-site powder coating service using AkzoNobel paints, delivering flawless, hard, and durable paint finish. Available in Standard RAL Colours and BS4800 Colours.
• Door Maintenance (OneCall) Comprehensive service and maintenance cover for doors, providing ongoing maintenance support for installed products across Sunray's portfolio.
• Fire Door Inspection Services FDIS-approved fire door inspection services ensuring premises meet all current safety standards and legal requirements.

Quantifiable outcome

• FireLock® doorset achieves 240-minute fire rating whilst maintaining 34.2 kPa blast resistance
• +4 more outcomes

Named customers10 records

Segments12 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

One partnership is on record.

• ASSA ABLOY GroupcoreOthersSunray Engineering is a division of ASSA ABLOY Group, a global leader in door opening solutions. The company operates as Part of ASSA ABLOY / Sunray Engineering Ltd. This parent relationship provides corporate backing and integration into a major global security and access solutions group.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Hörmann: German-headquartered global leader in commercial, industrial, and residential doors including fire-rated, security, and high-speed doors. Closest direct peer given overlapping product categories (steel doors, fire doors, industrial doorsets) and enterprise customer base in infrastructure and utilities.
• Crittall Windows: UK heritage manufacturer of steel windows and doors for commercial, residential, and heritage projects. Comparable as a UK-based steel door/window specialist with overlapping customer base in education, social housing, and commercial construction.
• GEZE: German manufacturer of door, window, and safety technology including fire-rated and smoke-rated door systems. Comparable as a European peer specializing in certified fire and security door solutions for commercial buildings.
• Wisniowski: Polish manufacturer of steel doors, garage doors, fences, and industrial access solutions. Comparable as a European steel door specialist with security and industrial product ranges targeting commercial and infrastructure customers.
• Norton Doors (Norton Security Doors): UK steel security door manufacturer producing LPS 1175 rated steel doorsets for commercial and utility customers. Comparable as a UK direct competitor in security-rated steel doors serving infrastructure and utility end markets.
• SLP Engineering: UK specialist fabricator of steel security and fire-rated doors for utility, infrastructure, and commercial customers. Comparable as a smaller UK direct peer competing in similar DNO/utility and security door specification markets.

Broad incumbents

• ASSA ABLOY Group: Sunray's parent company and the global leader in door opening solutions. Comparable as a broad incumbent with overlapping security door and access control product lines serving government, commercial, and industrial customers worldwide.
• Kingspan Group: Irish-listed building envelope specialist with insulated panel, door, and access solutions divisions. Comparable as a broad incumbent selling into commercial/industrial construction with security and insulated door offerings.
• Schüco: German building envelope specialist offering aluminium, steel, and fire-rated door and window systems for commercial and high-rise construction. Comparable as a broad incumbent in certified architectural door and glazing systems.
• Reynaers Aluminium: Belgian manufacturer of aluminium architectural solutions including high-security and fire-rated door systems for commercial buildings. Comparable as a broad incumbent with overlapping commercial door product lines.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/sunray-engineering-ltd
• Xx.com/SunrayDoors
• Facebookfacebook.com/sunraydoors

Compliance15 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sunray Engineering