Since 1964, Thomas Armstrong (Timber) Ltd have been to be a leading timber roof truss manufacturer, servicing sites across the North of England and Scotland. We manufacture and transport roof trusses to private individuals, builders and developers for both residential and commercial construction projects.


All buildings are unique, so our dedicated teams have the in-depth experience and knowledge of the industry so can supply roof trusses ranging from basic mono pitched roofs to complex bespoke full roof packages.

Our timber roof trusses are designed, using the latest MiTek software, to meet all current codes and standards; with detailed layout plans and individual truss drawings included in the design process to ensure we fully meet your requirements at every stage. As a MiTek truss manufacturer you can be confident that you are dealing with a company using the very latest in design and engineering software, with the full backup of MiTek’s exceptionally experienced support team of technical experts.

Along with our exceptional customer service, the quality of our engineered roof products is important to us, and roof trusses being manufactured to the highest quality using timber responsibly sourced under the Programme for the Endorsement of Forest Certification (PEFC) scheme. We are also members of TRADA and the Trussed Rafter Association and have always continued to meet the latest developments within the industry, so all our trusses are manufactured to BS EN 1995-1-1 (Eurocode 5) and EN 14250 and under ISO 9001.

No matter the size and complexity of your project, be assured we are always here to help you.


One key advantage is at Thomas Armstrong (Timber) Ltd, we supply all the relevant timber ancillaries’ items as standard. Depending on the timber product/s ordered, ancillaries items such as straps, hangers, timbers, truss clips, gable straps, valley gutters etc are delivered at the same time ensuring you have everything you need to complete the installation of our products on-site.



  • Suitable for a wide range of roof structures and building types
  • Prefabricated components mean reduced site labour costs
  • Manufactured off site
  • Easily transported and ready for installation on delivery
  • Cost effective solution
  • Flexible and versatile
  • Engineered product that provides greater level of precision and accuracy



  • House extensions
  • Self builds
  • Housing schemes
  • Barn conversions
  • Apartments
  • Student accommodation

Commercial buildings, including:

  • Schools
  • Nursing homes
  • Hospitals
  • Offices
Why choose Thomas Armstrong?

Thomas Armstrong (Timber) Ltd have been to be a leading timber roof truss manufacturer, servicing sites across the North of England and Scotland. To discover why to choose Thomas Armstrong (Timber) Ltd then click here for more information.

Our Process
Other Products Available

At Thomas Armstrong (Timber) Ltd, we provide a range of timber products to support you with your build project including:

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Supporting you with your build project
Thomas Armstrong (Timber) Ltd is part of the Thomas Armstrong Group, as we can provide a ‘one stop’ service as we have the skills, capabilities and knowledge to help support you with your entire build project. Other services of interest include: