What does it mean when lumber is marked as "kiln-dried"?

When lumber is marked as "kiln-dried," it means that the wood has been dried in a controlled environment specifically to reduce its moisture content. This process involves placing the wood in a kiln, where heat and humidity are carefully regulated to expedite the drying process while preventing damage to the lumber. Reducing moisture content is crucial because it helps to minimize warping, splitting, and other forms of distortion that can occur as wood dries naturally.

Kiln-dried lumber is typically more stable than air-dried wood, making it a preferred choice for construction and woodworking projects where precision and durability are important. The controlled drying process also helps to kill pests and eliminate mold, further enhancing the quality and longevity of the lumber.