In this paper, a field fire stake testing screen method is described. This method uses stake samples from matched wood sources allowing replicates from different boards to be included. The method is easy to control and can provide quick comparative fire resistance test results. The parameters measured from the tests are percentage weight loss, minimum residual circumference and residual thickness. Using this method, several chemical additive systems for CCA treatment have been tested for their effectiveness as fire after-glow control agents. The data generated are presented and suggest that by using the combination of weight loss and minimum circumference information, the potential effective candidate systems can be selected for further research and testing.

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