Depending upon the ease with which Indian timbers can be seasoned, they are divided into three groups, namely, non- refractory timbers, moderately refractory timbers and highly refractory timbers.
Non-refractory timbers can be rapidly seasoned without any trouble. They can be seasoned even in the open air and sun. Examples are deodar, simul, etc.
Moderately refractory timbers have tendency to split and to crack during seasoning. They are therefore to be protected against rapid drying conditions. Examples arc mango, rosewood, sissoo, teak, etc.
Highly refractory timbers are likely to be damaged severaly during seasoning. They are difficult to season. Examples are axle wood, hopes, laurel, sal, etc.
The cost of seasoning of timber will naturally depend on the thickness of timber and type of timber with respect to seasoning. It will be more for highly refractory timbers and less for non- refractory timbers.
The period or time for seasoning of timber will also vary with the thickness of timber and type of timber with respect to seasoning. Table below shows the time required for seasoning of different timbers with different thicknesses.
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| Time for Seasoning of Timbers |
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