Donaldson Timber – Timber Floor Systems, joists, posi joist
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Timber Floor Systems

Productivity, consistency and quality are often seen as mutually exclusive attributes within high volume building environments. Our engineered timber product ranges are specifically designed to eliminate any trade-off between these key objectives. As the UK's leading supplier of innovative, engineered timber products, Donaldson Timber Engineering's output is characterised by superior strength, rigidity and dimensional stability. The range includes:

  • Finnjoist
  • Kerto-S Laminated Veneer Lumber (LVL)
  • Kerto-Q Laminated Veneer Lumber (LVL)
  • Posi Joist

In recent years the uptake of engineered timber solutions by our customers has been significant. The now well-established track record for the inherent safety, quality and cost-effectiveness of these engineered products make them highly attractive in environments where productivity, consistency and quality are pre-requisites for performance without compromise.

...Wherever you are we've got you covered

Floor Cassette

This prefabricated modular floor system can be used in both traditional and timber framed house building and in non-residential situations. The system has already been adopted by many of the UK's leading house builders who have found it brings improved productivity, increased operating safety during the construction process. Another significant spin-off is the instant stability transmitted to the working platform and the consequent major reduction in the overall project erection time - an ideal solution for both residential and non-residential floors and joists.

Hoisting floor cassettesInstalling floor cassettes

Finnframe Floor & FJI Joists

The UK manufactured system is rapidly becoming the builders choice, being a popular cost-effective and versatile option to traditional timber, offering unrivalled design and flexibility options. It is manufactured using low, uniform moisture content which alleviates the splitting, warping and twisting problems common to solid timber joists. FJI joists deliver less dimensional change over time, virtually eradicating floor movement and its associated problems, resulting in greater floor performance.

This high quality engineered product, available in 14 metre lengths, can be delivered pre-cut to match your exact on site requirements. As with our trussed rafters, we offer a comprehensive design service for all floor engineering requirements using the Finnframe Floor System.

I-Beams

I-Beams

8 Major Centres throughout the UK and Ireland

Posi Joists

Posi Joist timber and steel floors are a viable and increasingly popular alternative structural floor system that takes the advantages of timber and adds a new dimension of flexibility to the construction process.

With manufacturing spans of up to 12 metres and the open web design eliminating the need for time consuming and costly cutting and drilling for the provision of services, the Posi Joist system brings a new perspective to floor truss technology.

Posijoists from below

Posi Joists are designed to the loading criteria set out in BS6399: Part 1 and Agreement Certificate 88/2100.

Full technical and specification information as well as on-site installation advice and guidance is available.


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