Contact Us


We supply a comprehensive range of high quality carcassing timber products to meet the demands of the British building industry and construction industry and we supply many of the most trusted builders merchants in the UK.

James Jones was one of the first UK timber processors to introduce stress graded British carcassing to the UK construction industry. Our philosophy was, and remains to this day, to offer the very best in quality products and customer service, consistently.

Our five Scottish-based mills retain a high degree of flexibility, while achieving extremely high levels of efficiency due to the on-going investment in the latest timber technology made by the company.  3-D scanning, X-ray grading, mini-bundling and incising are among the latest technological innovations we have introduced to assist and complement high-speed, high volume and high yield production.    

We offer an ex-stock capability on a wide range of carcassing specifications augmented by a wide range of complementary specifications.

KD C16, Structural Carcassing

Carcassing Lockerbie

As the UK’s leading supplier of J-Joists (also known as planed carcassing with Eased corners), we offer:

  • Full range of kiln dried, C16 strength graded structural carcassing sections
  • Comprehensive stockholding
  • Ex-stock availability
  • ‘Pick a Pack’ facility for maximum convenience
  • Consistent quality - in every pack
  • Expert advice and assistance
  • Compliance with current European standards (BS EN 14081)
  • Green preservative treatment
  • Yellow Protim treatment


Kiln Dried C16 Graded -  planed and eased J-Joist specifications 
mm   50 75 100 125 150 175 200 225
  Finished Dimension 44 72 97 120 145 170 195 220
47 44     yes yes yes yes yes yes
75 72      yes   yes yes yes yes



Kiln Dried 1st Quality Ungraded - available sawn 
mm 50 75 100
47 yes yes  
75   yes yes



Kiln Dried 1st Quality Ungraded - available planed J-Joist production
mm   50 75 100
  Finished Dimension 44 72 97
47 44 yes yes  
75 72   yes yes


We maintain an ongoing stock commitment of ungraded, unseasoned timber at each of our carcassing mills.

Complementary to our core carcassing ranges, production comes in a variety of standard specifications.

Also available:

  • FSC mixed 70% TT-COC-1503
  • Heat treated ISPM 15 56/30
  • Preservative treated


 Product range
  50mm 75mm 100mm 150mm










Looking for a different specification? Just ask.

Sales Contact


Why choose James Jones?

We were one of the first UK timber companies to introduce X-ray strength-grading technology, allowing for complete confidence in our C16 construction grade timber.