Thomas Armstrong (Timber) – Literature & Technical Resources
At Thomas Armstrong (Timber) Ltd, we are committed to providing our customers, specifiers, and partners with accurate and up-to-date information. Below you can download product literature, technical specifications, installation guides, and certifications for our full range of engineered timber products and services.
UKCA and CE Declaration Certificates
Industry Certificates
Technical Guidance
Roof Trusses
Spandrel Panels - Gable End and Party Wall
i-Joists
Metal Web Joists / Posi-Joists
Floor Cassettes
Timber Frame Kits
Environmental & Sustainability
Committed to a Greener Future with Timber
At Thomas Armstrong, we prioritise sustainability by using eco-friendly materials and ensuring responsible sourcing practices. Our commitment to the environment drives us to innovate and provide products that are not only high-quality but also environmentally conscious.
Responsibly Sourced Timber
All our timber is certified by FSC® and PEFC, ensuring sustainable and ethical sourcing.
Timber Waste Recycled
We repurpose or recycle nearly all timber waste to minimize environmental impact.
Our Trusted Accreditations and Certifications
We are proud to hold numerous industry accreditations, ensuring quality and reliability in our products.








Contact Thomas Armstrong (Timber) Today!
At Thomas Armstrong (Timber) Ltd we pride ourselves on our high level of customer service across the company. Our friendly staff will be more than happy to help answer any questions you have relating to sales and our products as well as any technical advice you have. Please contact our office today!