Our Accreditations

CE Marked Products

At Acorn Timber Engineering, our James Jones JJI-Joist products are CE-marked, demonstrating compliance with EU safety, health, and environmental standards. This certification confirms that our products meet the necessary legal requirements and are approved for unrestricted sale across the European market.

UKCA Marked Products

At Acorn Timber Engineering, our Trussed Rafters and Posi-Joist products are UKCA marked, confirming that they meet the safety, health, and environmental requirements set out in UK legislation. This certification ensures our products comply with all relevant British standards and are approved for use across the Great Britain market.

ISO 9001

The global standard for quality management. We operate with streamlined, efficient processes that consistently deliver high-quality results.

ISO 14001

The benchmark for environmental management. We’re committed to minimising environmental impact, reducing waste, and complying with environmental regulations at every stage.

EN 14250:2010 Compliance

This certification ensures our products meet stringent requirements for: structural integrity, manufacturing precision, quality control and safety in use. Our adherence to EN 14250:2010 means you can trust the reliability and performance of our trussed rafters in all your construction projects.

Trussed Rafter Association Membership

In addition to the above accreditations, Acorn Timber Engineering is a proud member of the Trussed Rafter Association (TRA). This mark of quality assures our customers that we consistently meet rigorous professional standards in the manufacture of trussed rafters and metal web posi-joists.

PEFC Certification

Acorn Timber Engineering is proud to be certified by PEFC, the world’s leading forest certification system. This internationally recognised mark ensures our timber comes from responsibly managed forests that meet strict environmental, social, and economic standards. Sustainability is at the heart of our product range.