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The leading end-to-end metalwork solutions partner in the UK & Ireland, offering engineered metalwork and design software covering an entire build.

Innovation in Every Connection. Trust in Every Build.

Cullen Head Restraint Screw

HRS

The first engineered solution of its kind to enter the market

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WELCOME TO ITW COnstruction OFFSITE Europe

Engineered metalwork and software solutions for offsite timber construction

ITW Offsite Europe provides metalwork and design software solutions for the UK and Ireland’s offsite timber sector. Through our trusted brands, Cullen, Gang‑Nail and Alpine, we combine over five decades of expertise to provide high‑quality connectors, systems and software designed for floor, roof and wall applications.

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Specified by fabricators nationwide

OUR trusted brands

Three specialist brands, one partner

Our engineered brands support the offsite timber frame industry and fabricators nationwide, delivering compliant metalwork and design software soltuions.

Innovation in Every Connection. Trust in Every Build.

For over 40 years, Cullen has delivered innovative, compliant and high‑quality metalwork solutions for floor, roof and wall assemblies, engineered from real‑world challenges to meet industry standards.

About Cullen

Design with confidence. Build with precision.

Gang‑Nail provides engineered metalwork solutions and intuitive design software that streamline the entire design‑to‑production process, helping manufacturers achieve high‑quality timber frame components with expert training and support.

About Gang-Nail

Excellence in Engineering, Software and Service.

Alpine is a leading provider of industry solutions, combining over 60 years of expertise with advanced design software and technical support to help customers create high‑quality roof, floor and wall components - and build for the future.

About Alpine