The Keystone Group UK and Ireland

About The Keystone Group


The Keystone Group has grown to become one of the UK and Ireland’s largest manufacturers of construction products.

Pioneering, innovating and an uncompromising attitude of ‘go through the wall’ for customers, has been fundamental to the Keystone Group’s success.

The Keystone journey began in 1989 when Chairman Sean Coyle founded Keystone Lintels in Cookstown, Northern Ireland. Sean’s vision was to create smart construction solutions beyond equal that meet the evolving needs of the construction industry and deliver these solutions alongside exceptional customer service. With 111 design patents, 125 staff dedicated to design and 35 product awards, this focus on innovation is still at the heart of the Keystone Group 35 years later.



The Keystone Group has grown to become the UK and Ireland’s largest steel lintel manufacturer and Europe’s fastest growing roof window manufacturer.

Celebrating its 35th anniversary in 2024, Keystone Group now encompasses 18 core brands across three divisions in the structural steel, building components and timber sectors.

Keystone’s relentless dedication to innovation has enabled the group to continuously expand with 1,600 employees across 27 sites in the UK and Europe providing pioneering building solutions for growing markets in the UK & Ireland, Europe, Australia and North America.

The Keystone Group consists of Keystone Lintels, IG Lintels, Keylite Roof Window, IG Masonry Support, Smartroof, Keyfix, IG Elements, Stockgap, Showersave, Keywall, Wyckham Blackwell, Timber Innovations, Crendon Timber Engineering, Glosford SIPS, Harmony Timber, David Smith St Ives, Roof Truss and Lynx Trussed Rafters.



Keystone Group Core Values



The Keystone Group is absolutely committed to providing and sustaining a safe working environment with safe equipment, safe working processes and a safety focused culture, resulting in zero harm to everyone, both on and off site.


We empower and challenge each other to think differently, embrace creativity and develop products, services, and processes that are smarter than anything else in the market.


We love what we do and we love sharing the passion we have for the Keystone community. When we have fun at work, we are more productive, engaged and motivated to succeed. A business that has fun together, wins together!


We have a relentless focus on excellence in quality for every process in our business. We support each other to deliver solutions and services that are world class and add value to our customers.

Technical Expertise

At Keystone we never stop learning. Our specialist teams are on hand to provide the most cost effective solutions for the most complex requirements.


Results matter. We go the extra mile and are committed to engaging with our customers, employees and communities every day to ensure we exceed expectations.