Largest Independent Timber Engineering Company In The UK

Donaldson Timber Engineering Ltd


If you're looking for structural timber components, Donaldson Timber Engineering Ltd is the company for you. We are the UK's leading and longest-established manufacturer and supplier of roof trusses, open web joists, and I-joists. Our regional network of seven branches means wherever you are, we are on your doorstep; providing the best in quality and local service with a national distribution.

We work with national and regional house builders, building and joinery contractors, builders' merchants and self builders, to provide a product and service that is of the highest quality and saves you time and money too. We offer more than just timber components - we are continually striving to improve our processes and products, to give you the best, in the safest and most sustainable way.

You can depend on DTE - that’s why we’ve been a respected name in the building industry for over 30 years.

Locations throughout the UK

timber engineering recent projects

Sling Unload

A self unloading system pioneered by Donaldson Timber Engineering and
now used by companies throughout
the industry.

Recent Completed Projects:

roof trusses ramside estate

Ramside Estate

roof trusses center parc

Center Parcs

6 luxurious houses in the North East of England.


Work Included: For this project, T.Fleming Homes Ltd specified attic trusses using Posi-Joist bottom chords, which was a first for DTE.

Bespoke manufacture of trusses.


Work Included: The DTE Ilkeston team was required to supply a massive 20,000 roof trusses for 625 forest lodges within a rapid build programme.