Gunn Lennon Fabrications

What Gunn Lennon Fabrications does

Gunn Lennon Fabrications Limited (GLF) is an Irish specialist facade contractor founded in 1988 and headquartered in Swords, County Dublin. The company designs, fabricates, and installs high-specification metal and glass facades — including unitised and stick curtain walling, architectural cladding, roof glazing, and commercial windows and doors — for commercial offices, universities, healthcare and pharmaceutical facilities, public buildings, and leisure venues across Ireland and the UK.

The business is anchored by its proprietary GLF ECO 90 unitised curtain wall system, extruded by Cortizo in Spain from a minimum of 80% recycled aluminium, achieving U-values as low as 1.3 W/m²K and nZEB thermal compliance. GLF was the first Irish curtain wall company to deliver facades fabricated from 100% post-consumer recycled aluminium at no additional cost, with aluminium billets measuring 0.92 kg CO₂e per kg — approximately 8x lower than the European average. The company has also developed GlassECC, an EPD-based embodied carbon calculator for insulating glass units. Operations are run from a 2,700 m² state-of-the-art fabrication plant at Swords Business Park, supported by in-house design, engineering, and production planning teams.

GLF operates a project-based revenue model, competing for premium contracts valued between €4m and €30m+ through competitive tendering with main contractors (BAM, John Paul Construction, SISK, Walls Construction, Collen Construction) and direct engagement with developers, architects, and end clients. The 51-100 person organisation is privately held with no disclosed PE/VC involvement and is led by Managing Director Pádraig O'Dwyer alongside Technical, Finance, Operations, and Commercial Directors. The company's value proposition combines nearly four decades of design-led delivery, sustainability credentials supporting LEED Platinum / WELL / nZEB certifications, and a multi-supplier technology stack spanning Cortizo, Hydro, Wicona, Aluprof, Schueco, Glassbel, Sedak, and CareyGlass.

Name

Gunn Lennon Fabrications

Legal name

Gunn Lennon Fabrications Limited

Website

https://glffacades.com

Company type

Private

Founded year

1988

Operating status

Operating

Headcount range

51–100 employees

Short description

GLF is an Irish specialist facade contractor designing, fabricating, and installing curtain walling, cladding, roof glazing, and commercial windows/doors for commercial, education, healthcare, and public-sector projects across Ireland and the UK.

Ownership category

akta.pro rank

Product category

Architectural Facade Systems

NAICS

Fabricated Structural Metal Manufacturing (332312), Metal Window and Door Manufacturing (332321), Ornamental and Architectural Metal Work Manufacturing (332323), Glass and Glazing Contractors (23815), Plate Work and Fabricated Structural Product Manufacturing (33231)

SIC

Fabricated Structural Metal Products (3440), Metal Doors, Sash, Frames, Moldings & Trim (3442)

akta.pro primary industry

Drywall, Partitions & Suspended Ceilings (IMAFANAG)

akta.pro secondary industries

Metal Cladding, Soffits & Trim (Non-Panel Components) (IMADACAM), Interior Glazing & Glass Partitions (IMAFANAK)

Keywords

• Curtain wall fabrication
• Facade installation services
• Architectural cladding systems
• Commercial window systems
• Unitised glazing solutions

Headquarters

HQ city

Swords

HQ country

Ireland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Specialist Facade Contractor Services: GLF generates revenue as a specialist contractor providing design, fabrication and installation services for curtain walling, architectural cladding, roof glazing, commercial windows and doors. Revenue is project-based with contracts ranging from €4 million to over €30 million.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels3 records

Core offering

Gunn Lennon Fabrications is a specialist facade contractor that designs, fabricates and installs high-specification metal and glass facades for the construction industry in Ireland and the UK. Its core offering centres on the proprietary GLF ECO 90 unitised curtain wall system, complemented by stick curtain walling, architectural cladding, roof glazing, and commercial windows and doors, with project values typically ranging from €4 million to over €30 million. The company also developed the GlassECC embodied carbon calculator tool for the construction sector.

Product overview

Gunn Lennon Fabrications is a specialist facade contractor offering a unified portfolio of facade solutions. The core offering centres on the GLF ECO 90 unitised curtain wall system — a flagship product fabricated from recycled aluminium — complemented by stick curtain walling, architectural cladding, roof glazing, and commercial windows and doors. The company also provides the GlassECC software tool for embodied carbon assessment. These products and services are delivered as an integrated design, fabrication, and installation offering to the Irish and UK construction markets.

Differentiator

Problem solved

Functional benefit

Products and services

• GLF ECO 90 Unitised Curtain Wall System

Quantifiable outcome

• U-values as low as 1.3 W/m²K achievable with GLF ECO 90 system
• +3 more outcomes

Named customers18 records

Segments5 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Ten partnerships are on record, tiered core and major.

• Construct InnovatecoreStrategic or Co-development Partner · 1 January 2024GLF secured funding from Construct Innovate in 2024 to progress their research project: 'Developing an Environmental, Social and Governance (ESG) methodology for the construction industry'. During this project, an ESG methodology roadmap was developed for Irish SMEs within the construction sector to help them identify their own ESG priorities and assist in addressing current environmental challenges.
• CortizocoreTechnology or IntegrationCortizo in Spain extrudes the GLF ECO 90 curtain wall system from a minimum of 80% recycled aluminium, shipped to GLF by sea. This partnership contributes to highest possible LEED scores and sustainable product delivery.
• HydrocoreTechnology or IntegrationHydro supplies aluminium systems and products as part of GLF's supply chain for facade fabrication.
• WiconacoreTechnology or IntegrationWicona supplies window and curtain walling systems used in GLF projects including St. Vincent's University Hospital and Margaret Aylward Centre.
• AluprofcoreTechnology or IntegrationAluprof supplies aluminium building systems including curtain walling and roof glazing used in GLF projects such as Trinity College East End and UL Bernal Building.
• GlassbelmajorTechnology or IntegrationGlassbel supplies specialist glass products as part of GLF's supply chain for facade systems.
• SedakmajorTechnology or IntegrationSedak supplies specialist glass products as part of GLF's supply chain.
• CareyGlassmajorTechnology or IntegrationCareyGlass supplies specialist glass products as part of GLF's supply chain.
• SchuecocoreTechnology or IntegrationSchueco supplies window and facade systems used in GLF projects including Ballyroan Library and University of Limerick Medical School. Won Schueco Excellence Award for Design & Innovation.
• SeccomajorTechnology or IntegrationSecco supplies specialist systems products as part of GLF's supply chain for facade projects.

Scale indicators6 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Focchi Group: Italian-headquartered international facade specialist with UK and Irish project delivery; competes at the upper end of premium curtain walling, glazing and architectural metalwork projects where GLF also tenders.
• Josef Gartner (Permasteelisa Group): German-headquartered international specialist facade contractor with extensive UK/Ireland presence; competes for landmark curtain walling and bespoke facade packages, often at the larger end of project scale than GLF.
• Lakesmere Group: UK-based specialist building envelope and curtain wall contractor with comparable project scale, geographic reach across the UK, and a similar design-fabricate-install model serving premium commercial, healthcare and education schemes — directly comparable to GLF in market position and capabilities.
• Bennett Architectural: UK specialist aluminium facade and window manufacturer serving commercial, healthcare and education projects; competes for similar curtain walling and glazing contracts with comparable design-engineer-fabricate-install capabilities to GLF.
• McMullen Architectural: Northern Ireland-based specialist architectural aluminium fabricator focused on curtain walling, windows and doors for UK and Irish commercial projects — highly comparable to GLF in product mix, regional focus, and SME specialist contractor positioning.
• Avantis Facades: UK specialist facade contractor delivering unitised and stick curtain walling for commercial and mixed-use developments; directly comparable in product portfolio and target market to GLF.
• CLM Group: UK specialist contractor delivering facade, curtain walling and architectural glazing packages; similar project profile and customer base to GLF across commercial and public-sector schemes.

Broad incumbents

• Wicona (Hydro): Major European aluminium systems brand and supplier to GLF; also offers project-specific contracting solutions through systems partners and installer networks, overlapping with GLF's facade contractor role at a portfolio rather than specialist level.
• Schueco UK: Global aluminium building envelope systems manufacturer and Schueco Excellence Award-giver to GLF; offers fabrication partner programmes that overlap with GLF's specialist contractor business on premium UK and Irish projects.

Others

• Reynaers Aluminium: European aluminium systems supplier serving similar facade contractors as an enabler/supplier to GLF rather than a direct competitor; included as an adjacent ecosystem participant in the same curtain wall value chain.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/glf-facades

Revenue estimate

Valuation estimate

Number of profiles

Profiles15 records

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 Gunn Lennon Fabrications