John Duffin

John Duffin is an experienced Managing Director at Keyfix Ltd, where they lead the fastest growing segment of the Keystone Group, specializing in the design and manufacture of non-combustible cavity trays and cavity tray lintels. They previously served as Managing Director at Keylite Roof Windows, contributing to its growth as Europe's fastest growing roof window manufacturer. Prior to that role, John was a Technical Manager at Keystone Lintels. John holds a BSc Hons in Building Engineering and Management from the University of Ulster, where they concentrated on the built environment.