(a) Boiling: In this technique timber is immersed in water and then water is boiled for 3 to 4 hours. Then slowly it is dried. Instead of boiling water hot steam can be circulated on timber. The procedure of seasoning is fast, but costly.

(b) Kiln Seasoning: Kiln is an airtight chamber. Timber to be seasoned is placed inside it. Then completely saturated air in the kiln with a temperature 35°C to 38°C is forced. The heat gradually reaches inside timber. Then relative humidity is slowly reduced and temperature is increased, and maintained until desired degree of moisture content is gained.

The kiln utilized may be stationary or progressive the carriages carrying timber travel in progressive kiln from one end of kiln to other end slowly. From the discharging end the hot air is supplied so that temperature increase is gradual from charging end to discharging end. This technique is used for seasoning on a larger scale.

(c) Chemical Seasoning: In this technique, in a solution of suitable salt the timber is immersed .Then in a kiln the timber is dried. By chemical seasoning ensures uniform seasoning of outer and inner parts of timber.

(d) Electrical Seasoning: In this technique through timber high frequency alternate electric current is passed Resistance to electric current is low. In timber is high when moisture content. The resistance reduces as moisture content reduces. Measure of resistance may be used to stop seasoning at appropriate level.

Yet it is costly process. In some plywood industries this method has been tried but not in seasoning of timber on mass scale.