FWPA Building Innovations

Weyerhauser Flak Jacket fire resistant joists

“I” Joists with intumescent (fire resistant) coating applied to selected faces during manufacture. No special change to construction required.


The concept is a useful addition to the armery of options for fire resistant timber construction and could be used where plasterboard based fire solutions are not appropriate or where an upgrade in performance of specific flooring members is warranted. There is obvious potential to apply much the same concept to other timber elements such as large scale panelised construction.


Appears to be new to the market. No obvious fire performance data available to substantiate performance. Cost is not known at this stage.




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Forest and Wood Products Australia Limited (FWPA), a not for profit company, is the Australian forestry and wood  products industry’s service provider, investing in research and development, and providing research results and generic promotions to the Australoian industry. FWPA aims to improve the competitiveness and sustainability of the Australian forest and wood products industry through innovation, investment in effective and relevant R&D and communication of the results to stakeholders. Read more about FWPA at www.fwpa.com.au

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Forest and Wood Products Australia
Level 11, 10-16 Queen Street
Melbourne VIC 3000 Australia

Phone: +61 3 9927 3200
Fax: +61 3 9927 3288
Email: info@fwpa.com.au