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Effect of surface-applied treatments on the above-ground performance of simulated timber joinery

Norton, J. and Francis, L.P. (2008) Effect of surface-applied treatments on the above-ground performance of simulated timber joinery. Australian Forestry, 71 (2). pp. 100-106.

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Publisher URL: http://www.forestry.org.au/ifa/c/c0-ifa.asp

Abstract

We examined the effect of surface-applied treatments on the above-ground decay resistance of the tenon of mortice-and-tenon timber joints designed to simulate joinery that is exposed to the weather. Joints made from untreated radiata pine, Douglas-fir, brush box, spotted gum and copper-chrome-arsenic (CCA) treated radiata pine were exposed to the weather for 9 y on above-ground racks at five sites throughout eastern Australia. Results indicate (1) a poorly maintained external paint film generally accelerated decay, (2) a brush coat of water-repellent preservative inside the joints often extended serviceability (in some cases by a factor of up to seven times that of untreated joints) and (3) the level of protection provided by a coat of primer applied inside the joint varied and in most cases was not as effective as the water-repellent preservative treatment.

Item Type:Article
Additional Information:© Institute of Foresters of Australia.
Keywords:Decay; durability; joinery; service life; surface treatment; waterproofing; wood preservation.
Subjects:Science > Science (General)
Forestry
Deposited On:30 Oct 2008 05:58
Last Modified:29 Sep 2010 05:16

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