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We are the UK's largest and longest established manufacturer and supplier of engineered wood products, with eight branches across the UK and over 30 years of experience.

Largest Independent Timber Engineering Company In The UK

Donaldson Timber Engineering Quality | Control

Quality Control

At DTE, we offer more than just structural timber components; we are continually striving to improve our processes and products to give you the best, in the safest and most sustainable way. Our processes allow us to focus on getting a job done quickly and right first time.

As a company, DTE has complied with the requirements of ISO 9001, the internationally recognised Quality Management system, since 1991. As DTE's products are manufactured in a controlled factory environment and pre-site sized, you get guaranteed consistent quality.

CE Information

For many years, wood and wood products used in the construction industry in the UK have been covered by a range of British Standards and more recently, European Standards. These provide designers, specifiers, buyers and users with assurance of fitness for purpose and performance.

In an effort to reduce the technical differences between the different European countries, the Construction Products Directive (CPD) and CE marking were introduced.

What is CE Marking?

Since July 2013, CE marking has been a mandatory conformity marking for products sold in Europe. The CE marking is the manufacturer's declaration that the product meets the requirements of the applicable CE directives. All construction products, including roof trusses and Posi Joist products are required to have a CE Mark.

Can DTE offer CE Marked products?

Yes we can. Please Click Here for our CE Certificate, our Declaration of Conformity, and our technical information sheets for each manufacturing site for trusses and Posi Joists. Our other products (i.e. I Joists and chipboard flooring) will have the primary manufacturers CE Mark detailed on the product.



SafeStep is an award-winning scaffolding system for improving safety on-site, designed to minimise risk when fixing ridge bracing on tall roof trusses.

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Our Latest Brochure

Please download DTE’s latest brochure.

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ISO 9001

These assurances, not always available from smaller companies, will put your mind at rest.

We operate an on-going, in-house quality programme which is Quality Assured to the independent industry standard ISO 9001.

Recent Projects

Specialised roof packages for housing development

Work Included:Work Included: DTE worked with Barratt Homes on a large housing development in Surrey, providing a specialised full roof package for a block of flats and 110 houses.

Roof system for renovation of listed building

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.

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Head Office

Donaldson Timber Engineering Ltd
Muiredge Industrial Estate


01592 715026


01592 714007



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