Timber Logo

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

Kerto LVL and Timber Engineering Services in the UK

Kerto LVL

Where clear spans for floors and flat or low mono pitched roofs exceed 6m, it is wise to start looking at alternatives to I-joists and open web joists, such as Kerto LVL.

DTE is able to provide Kerto-LVL components - an engineered wood product, designed to provide exceptional strength and dimensional stability.

What is Kerto-LVL?

imageKerto® is a laminated veneer lumber (LVL) product used in a variety of applications including feature beams, support beams, joists, rimboards, edge binders and lintels. It can be used in all types of construction projects, from new buildings to renovation and repair.

Kerto is incredibly strong and dimensionally stable, and it does not distort or shrink. It derives its high strength from the homogeneous bonded structure. It is produced from rotary-peeled 3mm graded softwood veneers, which are then glued together to form a continuous 1.8 or 2.5 metre wide product. The 21mm to 90mm thick sheets are then further machined to the finished dimensions. The result is an engineered wood product that maintains the natural beauty of wood whilst being strong enough for most types of construction.

There are two key types of Kerto®:

Kerto-S is produced so that all its veneers are laid in the same direction, delivering a product perfect for beams of any specification, and for achieving long spans with minimal deflection.

Kerto-S combines excellent technical performance with ease of use. As it is lightweight, it offers great advantage in repair and renovation work. Plus, erection and installation can be carried out by building contractors, without any heavy hoisting machinery, even in confined spaces.

Kerto-Q is produced in a similar way to Kerto-S but with approximately 20% of its veneers laid crossways. Kerto-Q delivers exceptional dimensional stability and performs well where high compression strength is required.

Large sized Kerto-Q is a popular material in floor rimboards and wall panels because it stabilizes the whole structure, and good fire resistance is achieved with a properly chosen thickness. Kerto-Q panels are also appreciated for their natural beauty. Like all Kerto products, Kerto-Q is known for its strength, straightness and incredible dimensional stability.

One Stop Shop

At DTE, we supply more than just trusses and joists. We can provide you with all the associated products you need for your roofing or flooring requirements, including:

  • Kerto LVL
  • Glulam
  • Spandrel panels
  • Roof or floor cassettes
  • Gable ladders
  • Metal connectors and straps
  • Stability bracing
  • Chipboard decking
  • Fascias
  • Barge boards
  • Soffits
  • Sheathing


DTE has eight regional branches across the UK and we are able to provide rapid delivery of our Kerto components.


If you have any further questions about our products, please get in touch.

Donaldson Timber Brochure

Please download DTE’s latest brochure.

Download PDF

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.

Sign Up for Our Newsletter

Head Office

Donaldson Timber Engineering Ltd
Muiredge Industrial Estate


01592 715026


01592 714007



Follow Us:

  • twitter
  • google