What is the process that reduces moisture content in wood by placing stacks in a kiln with controlled heat, air, and humidity?

• A. Air drying
• B. Seasoning
• C. Kiln drying
• D. Pressing

Answer: (C)

Kiln drying uses a controlled environment where heat, airflow, and humidity are carefully managed to remove moisture from wood. The heat accelerates evaporation from the wood’s interior to the surface, while the controlled airflow carries the moisture away and the humidity control prevents surface drying from happening too fast, which helps avoid cracks and defects. This combination yields faster and more uniform moisture reduction than natural air drying. Air drying relies on outside conditions and is slower and less predictable; seasoning is a broader term for drying wood, and pressing is a separate process not focused on moisture removal.