• Timber Frame
  • Floor Systems


  • James Jones and Sons
  • broomage road
  • Larbert
  • IV36 2GW
  • United Kingdom
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James Jones and Sons

James Jones & Sons Ltd, Timber Systems Division manufactures the JJI-Joist, a structurally engineered timber joist combining high-grade softwood with an engineered composite panel. JJI-Joists are standard building components used in commercial and residential construction as load bearing or non load bearing members for roofs, walls and floors.

A JJI-Joist offers many design and performance advantages over conventional structural products including a resistance to shrinking and warping, an excellent strength to weight ratio, straight and uniform dimensions and FSC accreditation.

Accreditations & Affiliations

  • Structural Timber Design Knowledge
  • PEFC
  • ISO:14001 (775)
  • ISO: 9001 (920)
  • In House Quality Procedures
  • FSC
  • CE Mark Product
  • BM TRADA Q Mark Product (EWP-0001)