The special treatment with heat and water changes the structure of domestic hardwood in way that it becomes at least as durable, humidity resistant, and stable in its dimensions as tropical wood. Often proGOODWOOD properties even exceed the features of tropical wood. As the raw material for proGOODWOOD comes from domestic deciduous forests, the expensive overseas transportation costs are omitted. proGOODWOOD also scores with respect to cost-benefit aspects!