Most species of freshly felled timber contain 100% or more moisture in it. For retention of shape and size of manufactured article and make quality product, timber should be seasoned and the moisture contents to be brought down to level in equilibrium with the surrounding atmosphere.

Seasoning is the process of drying wood to remove excess water. Untreated posts need not be seasoned or dried before using. In time they will loose and gain water until they are in balance with the moisture content of the soil and air. However, there are advantages to seasoning posts before using. Seasoned posts do not check or cracks as readily as unseasoned posts, are lighter to handle, and generally hold staples better.

Most methods of treating posts require seasoning prior to preservative treatment. Inadequately seasoned posts check or crack after treatment, exposing untreated wood to decay fungi and insects.

Seasoning is done in scientific way to ensure perfect seasoning under controlled. The drying of wood takes place by the application temperature humidity cycle