View Resources

eXtreme Joist is perfect for those sleek, low-to-ground decks. Using radiata pine which is one of the most versatile building products available on the market while boasting H4 Copper Azole treatment protecting it from insect and fungal decay. The H4 Treatment by Lonza in eXtreme Joist utilizes BARamine® technology for improved penetration in the wood which equals better protection.

For more information, specifications or advice, contact our knowledgeable team to discuss how eXtreme Joist can support your next project.
Contact Us

Applications

  • Deck Bearers
  • Deck Joists
  • Floor Joists
  • Pergola Rafters
  • External Stairs
  • Balusters & Handrailing
  • Battens

Features

  • Available Primed for even greater convienance
  • Sustainability – eXtreme Joist produced with radiata pine, the highest carbon sequestration and shortest regeneration cycle, timber uses the least amount of energy in production.

Performance

  • Manufactured to F7 grade as per the Australian Standard
  • Treated to Hazard level H4 for in ground durability.

Product Portfolio

Size and stability is enhanced by the use of Finger jointing and lamination technology in all 
products. The adhesive systems selected are all service class 3 for external in or above ground 
applications. This adhesive system has excellent bond strength and for many years has been 
used in a range of exposed applications including timber boat manufacture.

Product Availability

Span Tables

Single Span Residential 2.0kPa

Joist size 300 350 400 450
44x44 250 250 250 250
68x44 640 600 600 600
88x44 1300 1190 1100 1050
138x44 2710 2590 2430 2320

Continuous Span Residential 2.0kPa

Joist size 300 350 400 450
44x44 250 250 250 250
68x44 900 830 780 750
88x44 1930 1710 1570 1470
138x44 3320 3080 2890 2720

For more information, specifications or advice, contact our knowledgeable team to discuss how eXtreme Timber can support your next project.

Contact Us