What Keystone Group does

Keystone Group is a privately held UK construction products manufacturer founded in 1987 and headquartered in Cookstown, Northern Ireland. The group designs, manufactures and supplies specialist building products across three operating pillars: steel (lintels, masonry support, brick slip systems, structural steelwork), timber (engineered roof trusses, timber frames, structural insulated panels, glulam beams, joists), and light/environmental (roof windows, non-combustible cavity solutions). It operates more than 10 product brands — including IG Lintels (the UK's largest steel lintel manufacturer), Keylite, Smartroof, Wyckham Blackwell, Keyfix and Crendon — and runs 8 manufacturing and distribution sites across the UK, Northern Ireland and Poland, supported by 2,000+ employees.

The company's underlying technology is centred on engineered physical products rather than software: patented systems include the Keyfix Non-combustible Cavity Tray System (A1 fire rated, BBA Certified), IG Lintels' original open-back lintel design (now an industry standard), Smartroof panelised room-in-roof cassettes, and the Larsen Panel twin-stud walling system. These products target build-time reduction, thermal efficiency under SAP calculations, and post-Grenfell fire compliance in high-rise facades.

Keystone operates a B2B, sales-led go-to-market, supplying directly to the UK's largest house builders (Taylor Wimpey, Persimmon Homes, Bloor Homes, Galliford Try, Wates, EcoWorld) and via builders merchants and architect-led specification. Reported turnover stands at £300m. The group is privately held with no disclosed external investors, has grown through acquisitions (IG Lintels 2006, Smartroof 2012) and a 2015 strategic partnership with Wyckham Blackwell, and has committed to Net Zero by 2050 under the SBTi framework.

Name

Keystone Group

Legal name

The Keystone Group

Website

https://keystonegroup.co.uk

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

Keystone Group is a privately held UK construction products manufacturer producing steel lintels, timber engineering solutions, roof windows, and non-combustible cavity systems, supplying major house builders, contractors, and builders merchants through a portfolio of specialist brands.

Ownership category

akta.pro rank

Product category

Construction Products Manufacturing

SIC

Lumber & Wood Products (No Furniture) (2400)

akta.pro primary industry

Mass Timber & Structural Engineered Wood (CLT, Glulam, NLT/DLT) (IMADADAC)

Keywords

• Steel lintels manufacturing
• Timber engineering solutions
• Structural insulated panels
• Non-combustible cavity systems
• Construction products supply

Headquarters

HQ city

Cookstown

HQ country

United Kingdom

HQ region

Europe

Offices11 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Construction Products Manufacturing and Sales: Keystone Group manufactures and sells specialist construction products including steel lintels, timber engineering solutions, roof windows, structural insulated panels, and non-combustible cavity solutions to house builders and construction companies.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Keystone Group manufactures and supplies specialist construction products including steel lintels, timber engineering solutions, roof windows, structural insulated panels (SIPs), non-combustible cavity solutions, masonry support systems, and panelised roof systems. The company sells these products primarily to UK house builders, builders merchants, contractors, and architects across residential and commercial construction projects.

Product overview

Keystone Group is a diversified construction products conglomerate offering a unified portfolio of specialist building solutions across steel, timber, and light/environmental divisions. The company operates multiple distinct brands that serve different segments of the construction industry: IG Lintels and Keystone Lintels provide steel lintel solutions including standard, special, and energy-efficient products; Keyfix offers non-combustible masonry accessories for high-rise facades; Smartroof delivers innovative room-in-roof insulated panel systems; Wyckham Blackwell and its sub-brands (Crendon, Timber Innovations, Glosford SIPS, David Smith St Ives, Harmony Timber Solutions, Glulam) provide comprehensive timber engineering including roof trusses, timber frames, structural insulated panels, and glulam beams; Keylite provides roof windows; and IG Masonry Support supplies masonry support systems. These products serve house builders, builders merchants, and construction contractors across residential and commercial projects.

Differentiator

Problem solved

Functional benefit

Brands

• Keystone Lintels: Steel lintels manufacturing division
• IG Lintels
• Keylite
• Smartroof
• Wyckham Blackwell
• IG Masonry Support
• Crendon Timber Engineering
• Keyfix
• Stockgap
• Showersave
• Timber Innovations
• Glosford SIPS
• David Smith St Ives
• Glulam Timber Engineering
• Thor Helical

Products and services

• Keystone Lintels Steel lintels for the construction industry, providing structural support for openings in walls and masonry. Supplied to UK house builders and builders merchants.
• IG Lintels Design, development, manufacture and supply of standard and custom-made steel lintels, including Hi-therm+ lintels, special steel lintels, brick slip feature lintels, non-combustible cavity tray lintels, windposts, masonry support, and KeyFab structural steel for UK construction industry.
• Keyfix Non-Combustible Cavity Solutions Market leading non-combustible masonry accessories including the patented, BBA Certified, A1 fire rated Non-combustible Cavity Tray System (NCCT), non-combustible retaining discs, non-combustible weeps, and stainless steel wall ties and fixings for high-rise building facades.
• Smartroof Panelised Roof Systems Innovative room-in-roof insulated panel systems including Gable to Gable and Eaves to Ridge modular roof systems, manufactured to required U-values for room-in-roof construction. Supplied to UK house builders.
• Wyckham Blackwell Timber Engineering Comprehensive timber engineering solutions including roof trusses, timber frames, structural insulated panels, glulam beams, spandrel panels, and engineered floor joists to the UK construction industry through 19 nationwide locations and associated sub-brands (Crendon, Timber Innovations, Glosford SIPS, Harmony Timber Solutions, David Smith St Ives, Glulam Timber Engineering).
• Keylite Roof Windows Roof windows providing natural light and ventilation for residential and commercial properties in the UK construction market.
• IG Masonry Support Masonry support systems including brick slip soffit systems and advanced stainless steel masonry support products for the construction industry.
• Thor Helical Fixings Precision engineered helical bars, wall ties and fixings for new build and refurbishment construction applications.
• Insofast Insulation Fixings High performance insulation fixings for thermal efficient construction and retrofit insulation upgrades.
• Stockgap Construction Products Construction products and solutions for the UK building industry.
• Showersave Water Saving Products Water saving products for residential and commercial construction applications.

Quantifiable outcome

• IG Lintels invented the original open-back lintel which became the industry standard
• +3 more outcomes

Named customers10 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Wyckham BlackwellcoreStrategic or Co-development Partner · 1 January 2015Keystone Group and Wyckham Blackwell embarked on a Strategic Partnership Agreement in 2015 to deliver the most comprehensive range of timber engineering solutions to customers. Wyckham Blackwell operates as one of the largest manufacturers of timber engineering solutions in the UK with 19 locations nationwide.

Scale indicators7 records

Recent moves4 records

Expansion highlights5 records

Direct peers

• Catnic (Tata Steel): Catnic, part of Tata Steel, is a UK manufacturer of steel lintels, builders metalwork, and structural steel components for the construction industry. It is the most directly comparable specialist to Keystone's IG Lintels and Keystone Lintels divisions, competing head-to-head on standard and special steel lintels, windposts, and masonry support for UK housebuilders.
• Birtley Group: Birtley Group manufactures steel lintels, builder's metalwork, and galvanized structural products for residential and commercial construction in the UK. It competes directly with Keystone's lintel division across standard and bespoke steel lintels and shares the same builders merchant and housebuilder customer base.
• ACS Stainless Steel Fixings: ACS Stainless manufactures stainless steel wall ties, masonry support systems, cavity trays, and lintels for UK construction. It directly overlaps with Keystone's Keyfix non-combustible cavity solutions and Thor Helical wall ties ranges and serves the same post-Grenfell fire-rated masonry specification market.
• Donaldson Timber Engineering: Donaldson Timber Engineering designs and manufactures timber roof trusses, floor joists, and timber frame systems for the UK housebuilder and construction market. It is a directly comparable specialist peer to Keystone's Wyckham Blackwell, Crendon, and Timber Innovations divisions.
• Cavity Trays Ltd: Cavity Trays Ltd is a UK specialist manufacturer of cavity trays, damp-proof courses, and associated masonry accessories. It competes with Keystone's Keyfix and IG Lintels cavity tray products for the same housebuilder and merchant customers.

Broad incumbents

• VELUX Group: VELUX is the global market leader in roof windows and skylights, with a strong UK presence. It competes with Keystone's Keylite Roof Windows brand and is the dominant incumbent in the broader roof window category that Keystone addresses.
• Kingspan Group: Kingspan is a global building envelope and insulation manufacturer offering insulated panels, structural insulated panels (TEK), and roofing systems. It directly overlaps with Keystone's Glosford SIPS (which uses Kingspan TEK panels) and competes in the offsite/insulated roof system space alongside Smartroof.
• Saint-Gobain UK: Saint-Gobain is a large multinational building products group with UK operations across timber, insulation, roof systems (including Marley), and construction accessories. It is a broad incumbent peer with overlapping capabilities to multiple Keystone divisions, including offsite systems and timber/light divisions.
• Wienerberger UK: Wienerberger is a leading international manufacturer of clay bricks, blocks, and wall solutions with a significant UK footprint. It is a broad incumbent peer for masonry-related construction products, indirectly overlapping with Keystone's masonry support and lintel offerings in the residential envelope supply chain.

Others

• Travis Perkins plc: Travis Perkins is the UK's largest builders merchant, distributing construction products from manufacturers like Keystone to trade customers. It is a key channel partner rather than a direct competitor, and provides useful read-throughs on UK construction volumes and product demand trends.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/TheKeystoneGroup
• LinkedInlinkedin.com/company/keystonegroup-uk/?originalSubdomain=uk
• Xx.com/keystonelintels

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries10 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 Keystone Group