Which method is not typically used for preventive wood protection?

The method of using untreated materials is not typically employed for preventive wood protection because untreated wood is more susceptible to damage from insects, fungi, and environmental factors. Preventive measures are designed to safeguard wood against these issues, and utilizing untreated materials directly contradicts this goal. Regular inspection, application of chemical treatments, and physical removal of infected wood are all strategies aimed at preventing or mitigating damage, enhancing the longevity and integrity of wooden structures. In contrast, untreated materials do not provide any protection and can lead to increased risk of deterioration.