Sawn Timber Engineered Timber Pallets and Packaging Co-products Timber/Haulage
Our Timber Systems Division was launched 27 years ago and has grown to become the UK’s most respected manufacturer of certified I-Joists, branded as JJI-Joists. JJI-Joists are manufactured on the most technologically advanced production line in Forres, and are widely specified by architects, specifiers and housebuilder alike due to the unrivalled quality and service levels.


Our JJI-Joist system combines the JJI-Joist products with custom sized glued laminated timber (glulam) and system specific metalwork to create a highly flexible offering, ideal for framing structural floors, roofs and walls.

Like all James Jones' products, the JJI-Joist production process has been independently audited, meaning we are able to provide accurate carbon negative numbers for those customers looking to measure the carbon footprint of their project.

JJI-Joists are the most widely specified engineered wood product in the UK and are used in residential and commercial construction as load-bearing and non load-bearing members for floors, walls and roofs.

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JJI-Joists

The JJI Wall Stud offers a low carbon solution to the UK and European construction market.

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JJI Wall Stud

James Jones & Sons' Timber Systems Division is a leading supplier of high specification glued laminated timber (Glulam) specifically sized to suit the JJI-Joist product range, in partnership with Austria-based Hasslacher.

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Glulam

​In partnership with Stora Enso, we supply the UK construction sector with laminated veneer lumber (LVL) suitable for a wide range of structural applications and in sizes to complement our JJI-Joist range.

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LVL

JJI-Joists and our other engineered timber products are available through our network of distributors. Please enter your postcode in the space below to find your nearest distributor.

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Contact the Timber Systems Team

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Contact Team

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Company Projects

The downloads in this section cover Declarations of Performance; environment and chain of custody certification as well as the technical bulletins and technical manual.

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Downloads