IG Lintels

What IG Lintels does

IG Lintels is a UK-based manufacturer of steel lintels and masonry support systems, founded in 1958 in Cwmbran, South Wales, and operating as a division of the Keystone Group, which claims to be Europe's largest manufacturer of steel lintels and masonry support systems. The company designs, manufactures, and supplies a portfolio of more than 800 lintel types spanning standard galvanised steel lintels (cavity wall, single leaf, solid wall, timber frame), special bespoke lintels (arch, bay, bow, corner configurations), the award-winning Hi-therm+ thermally efficient lintel that addresses Part L Building Regulations, and the Non-combustible Cavity Tray Lintel (NCCTL) for Document B compliance in buildings above 11 metres. Adjacent product lines include masonry support systems, windposts, brick slip feature lintels, sun lounge lintels, cavity trays, and accessories, plus the recently launched Keyfab structural steel fabrication service. The business operates from four manufacturing and distribution centres in Cwmbran, Swadlincote, and Cookstown, holding a stack of certifications including BBA, ISO 9001, ISO 14001, LABC, RIBA CPD approval, and BRE testing.

The company targets housebuilders, architects and specifiers, commercial contractors, and construction merchants across the UK and Europe. Its go-to-market combines a nationwide merchant distribution network for standard products with a direct enterprise field sales motion via Regional Sales Managers handling bespoke and large-project specifications. Technical support, including free scheduling, CAD and BIM access, a Psi Value Calculator, RIBA-accredited CPD presentations, and bespoke design consultation, is offered as a service differentiator rather than a separately billed line. Revenue is generated primarily through unit sales of physical lintel and masonry support products distributed via merchants, supplemented by bespoke lintel contracts with housebuilders and developers and the newer Keyfab structural steelwork service. Pricing is not publicly disclosed but is unit-based via merchant price lists, with bespoke pricing determined per project. The company also runs the Keyskills education initiative, providing training, materials, and apprenticeships support across colleges in partnership with other Keystone Group brands.

Name

IG Lintels

Legal name

IG Lintels

Website

https://iglintels.com

Company type

Private

Founded year

1958

Operating status

Operating

Headcount range

51–100 employees

Short description

IG Lintels is a UK-based manufacturer of steel lintels and masonry support systems, serving housebuilders, architects, commercial contractors, and construction merchants through a national merchant network and direct enterprise sales. Founded in 1958, it is a division of the Keystone Group, Europe's largest steel lintel manufacturer, with over 800 lintel types.

Ownership category

akta.pro rank

Product category

Construction Building Materials

NAICS

Sheet Metal Work Manufacturing (332322)

SIC

Sheet Metal Work (3444), Prefabricated Metal Buildings & Components (3448)

akta.pro primary industry

Masonry Accessories & Reinforcement (Lintels, Ties, Mesh, Rebar) (IMADABAK)

akta.pro secondary industries

Masonry Prefabricated Elements (Panels, Lintels, Sills) (IMADABAM), Specialty & Alloy Steel (Stainless, Tool Steel, Electrical Steel, High-Strength/HSLA) (IMAKABAJ), Architectural & Miscellaneous Metals (Stairs, Railings, Ladders) (IMADACAE)

Keywords

• Steel lintel manufacturing
• Masonry support systems
• Building construction products
• Thermally efficient lintels
• Structural steel components

Headquarters

HQ city

Cwmbran

HQ country

United Kingdom

HQ region

Europe

Offices3 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. Steel Lintel Products: Design, manufacture and supply of standard and custom made steel lintels. Products include cavity wall lintels, single leaf lintels, solid wall lintels, timber frame lintels, and specialized Hi-therm+ thermally efficient lintels.
2. Building Component Systems: Extended range of building components including Brick Slip Feature Lintels, Steel Support Systems, Windposts, Cavity Trays, and accessories. One-piece prefabricated units with factory applied components.
3. Keyfab Structural Steel: Structural steel design and fabrication service providing bespoke steelwork for construction projects. Full design-to-delivery service including confirmation drawings and CE marked steelwork.
4. Technical Services: Technical advisory, scheduling, and specification support services including CPD presentations for architects and e-learning programs for merchant employees.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels7 records

Core offering

IG Lintels designs, manufactures, and supplies steel lintels and masonry support systems for the construction industry across Europe. The company offers over 800 lintel types including standard cavity wall lintels, special bespoke lintels, and the award-winning Hi-therm+ thermally efficient range. Operations extend to windposts, brick slip feature lintels, non-combustible cavity tray lintels, and structural steel fabrication services through Keyfab.

Product overview

IG Lintels is a manufacturer of steel lintels and building components, offering a comprehensive portfolio of over 800 lintel types as part of a unified product ecosystem. The core offering centers on Standard Steel Lintels (cavity wall, single leaf, solid wall, timber frame configurations) and Special Steel Lintels (custom arch and geometric designs), complemented by the award-winning Hi-therm+ thermally efficient lintels. The portfolio extends to Masonry Support Systems, Windposts, Brick Slip Feature Lintels, and the Non-combustible Cavity Tray Lintel for high-rise compliance. Keyfab provides structural steel fabrication services, while accessories including Cavity Trays, Weep Vents, and Stopends complete the installation system. The Keyfix sub-brand addresses non-combustible cavity requirements. Products are available in galvanised steel and stainless steel, with a full bespoke design service supporting architectural specifications.

Differentiator

Problem solved

Functional benefit

Products and services

• Hi-therm+ Lintels Award-winning thermally efficient steel lintels that are up to 5 times more thermally efficient than standard steel lintels, featuring a one-piece top hat design for reduced thermal bridging and improved SAP calculations. BBA Approved and compliant with Part L 2013.
• Standard Steel Lintels Wide range of galvanised steel lintels including 100mm Inner Leaf, Wide Inner Leaf, Wide Outer Leaf, Eaves, Porotherm, Timber Frame, Single Leaf, Box, Solid Wall, Extended Range, and Stainless Steel variants with various load ratings for residential and commercial construction.
• Special Steel Lintels Custom, bespoke steel lintel designs including Full Arch, Segmental Arch, Parabolic Arch, Apex and Half Apex, Venetian Arch, Gothic Arch, Bow, Square Bay, Splayed Bay, and Corner lintels with free design service for architects and designers.
• Sun Lounge Lintels Specialist lintels for sun lounge and orangery constructions including Standard, Apex, Venetian, Bow, Square Bay, and Vaulted Ceiling options.
• Masonry Support Systems Systems for supporting outer leaf materials including brickwork, fairface blockwork, rendered blockwork, and cut and reconstituted stone, with various fixing options to reinforced concrete and steel sections.
• Windposts Vertical structural supports spanning between floors to provide lateral support for large panels of brickwork. Available in DU, U, and LP types, manufactured from grade 304 stainless steel with various connection options.
• Brick Slip Feature Lintels One-piece prefabricated lintels with factory-applied brick slips for architectural detailing. Includes Brick Feature Lintels, Lightweight Brick Headers, and Lightweight Brick Sills in various arch styles.
• Non-combustible Cavity Tray Lintel (NCCTL) Class A1 non-combustible stainless steel single leaf lintel with combined cavity tray for Document B compliance in buildings over 11m high. Features patented mechanically fixed stopends.
• Keyfab Structural Steel Fabrication Full structural steel design and fabrication service including design, pricing, on-site builder support, confirmation drawings, and CE Marked Steelwork to EN10-90 Execution Class 2.
• Cavity Trays Lightweight polypropylene cavity trays in flat-pack format for damp proofing applications. Pre-creased for easy on-site folding, available in three sizes covering various roof pitches and cavity widths.
• Accessories Supporting products including Cavity Trays, Universal Arch, Weep Vents, and Stopends for complete lintel installation and moisture management.

Quantifiable outcome

• Hi-therm+ is up to 5 times more thermally efficient than standard steel lintels
• +3 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

Feature5 records

Partnerships

Eight partnerships are on record, tiered flagship, core and minor.

• Keystone GroupflagshipStrategic or Co-development Partner · 1 January 2006IG Lintels is a division of the Keystone Group, Europe's largest manufacturer of steel lintels and masonry support systems. The group includes Keylite Roof Windows, Keystone Lintels, IG Masonry Supports, Keyfix, Smartroof, and Stockgap. IG became part of the Keystone Group in 2006.
• KeyfixcoreStrategic or Co-development PartnerKeyfix is a related brand under Keystone Group setting new standards in delivery of non-combustible cavity systems for Document B compliance in buildings over 18m. Both brands collaborate under the Keyskills education initiative.
• IG Masonry SupportcoreStrategic or Co-development PartnerIG Masonry Support provides specialist shelf angle masonry support systems for brickwork, fairface blockwork, rendered blockwork, and cut stone. Collaborates with IG Lintels under Keyskills education initiative.
• Keystone LintelscoreStrategic or Co-development PartnerPart of Keystone Group brand family. Collaborates with IG Lintels under Keyskills education initiative providing free training support and materials to colleges and industry bodies.
• Keyskills Initiative PartnerscoreStrategic or Co-development PartnerKeyskills is an education initiative by Keystone Group involving IG Masonry Support, IG Lintels, Keyfix, and Keystone Lintels. Supports education sector for over 10 years promoting modern construction methods through free training and materials. Brands involved: IG Masonry Support, IG Lintels, Keyfix, and Keystone Lintels.
• ConstructionlineminorOthersIG Lintels holds Constructionline Gold Certificate and Facilitiesline Gold Certificate for supply chain compliance and procurement standards.
• BMF (Builders Merchant Federation)coreChannel Partner/ Reseller/ DistributorBMF is an approved training partner for IG's e-learning platform, providing product information to merchant employees through online academies.
• NMBScoreChannel Partner/ Reseller/ DistributorNMBS is an approved training partner for IG's e-learning platform, providing product information to merchant employees.

Scale indicators6 records

Recent moves9 records

Expansion highlights5 records

Direct peers

• ACS Stainless Steel: ACS Stainless Steel manufactures stainless steel lintels and masonry support products for the UK and Irish construction markets. It is a direct competitor in the stainless and special lintel segments where IG also operates.
• Catnic: Catnic is one of the UK's largest steel lintel manufacturers (owned by Tata Steel) producing standard, thermal and special lintels. It is the most direct head-to-head competitor to IG in UK merchant-distributed steel lintels.
• Birtley Group: Birtley Group manufactures steel lintels and builders' metalwork products in the UK, including standard and special lintels for residential and commercial construction. It competes with IG across standard, thermal and bespoke lintel ranges.
• Naylor Lintels: Naylor is a UK manufacturer of concrete and steel lintels serving housebuilders and merchants. Its lintel range and merchant distribution model overlap directly with IG's standard cavity wall lintel business.
• William Brown Steel Fabrications: William Brown manufactures steel lintels and bespoke metalwork in the UK. It competes with IG for special and bespoke lintel specification on commercial and residential projects.

Broad incumbents

• Voestalpine: Voestalpine is one of Europe's largest steel manufacturers and produces construction-related steel products (including through subsidiaries like Metsec). It is a broad incumbent in the upstream steel and engineered metal products space feeding UK construction.
• Tata Steel: Tata Steel is the parent of Catnic and a major European steel producer with galvanised steel coil and construction product divisions. As Catnic's parent, it represents a broader incumbent force in UK lintel and steel building products.

Emerging players

• Leviat: Leviat (formed from the merger of Ancon, Halfen and others) is a major manufacturer of masonry support, windposts, anchors and structural fixings. It overlaps with IG's masonry support, windpost and fixing product lines.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/iglintels
• YouTubeyoutube.com/channel/UC3fF_Cw50J6WGZnI3UFBYVA/featured
• LinkedInlinkedin.com/company/ig-lintels
• Instagraminstagram.com/iglintelscwmbran

Compliance17 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 IG Lintels