Our History
Donaldson Timber Engineering Ltd (DTE) has over 40 years' experience in timber engineering and is part of the Donaldson Group, whose timber heritage stretches back to 1860, manufacturing structural timber components from a regional branch network across the UK.

Donaldson Timber Engineering Ltd (DTE) has over 40 years' experience in timber engineering and is part of the Donaldson Group, whose timber heritage stretches back to 1860, manufacturing structural timber components from a regional branch network across the UK.
DTE supplies a full range of engineered timber products, including roof trusses, Posi-Joists, site-ready I-joists and panels. As a family owned and run business, DTE has strong traditional and family values. We distribute nationally, providing a local service; and we pride ourselves on providing only the best quality and service.
We pride ourselves on our ability to work with a customer from start to finish, delivering expert customer service and quality of product every time.
"Fleming Homes works near on exclusively with Donaldson Timber Engineering for timber trusses and engineered joist products. This is down to the quality products received, excellent service and reliable remedial support. DTE and its staff are key members of our design team."
Hayden Martin, Operations Director at Fleming Homes
Our people are our most valuable asset, so it makes sense to make sure that they, and the people they care for, benefit too. We want to be a place where people thrive, where they realise their ambitions and potential, in an environment that’s empowering, nurturing and progressive. It’s about taking things further and making the most of opportunities to do and be better – and making sure that everyone benefits from our positive actions.

Over 40 years of engineered timber
DTE is the UK's largest and longest-established manufacturer of structural timber components — a family-owned business distributing nationally while keeping a local service.
Longest established
Decades of engineered timber experience across the UK.
Family values
Part of the family-owned James Donaldson Group.
Trusted long term
Customers who return to us project after project.
National manufacture
A branch network built up region by region.
40+
Years in timber engineering
10
UK branches
1
Family-owned group
UK
National coverage
The things that have not changed
Products and machinery have moved on a long way. The way we work with customers has not.
People first
Our people are our most valuable asset, and we invest in them.
Quality every time
The same standard whether it is one roof or a whole development.
Start to finish
One team with you from first enquiry to final delivery.
Responsible timber
Legal, sustainably sourced material as standard.
Since day one
Built on doing the job properly
See the projects we have delivered, or talk to us about yours.
