What is the moisture content percentage of the lumber stamp abbreviation of S-DRY?

The abbreviation S-DRY stands for "surfaced dry," and it indicates that the lumber has been dried to specific moisture content levels. This designation means that the moisture content of the wood is below a certain threshold, which is crucial for maintaining the quality and integrity of the lumber in construction and woodworking applications.

In the context of lumber, S-DRY specifies that the moisture content is less than 19%. This is significant because wood that is too moist can warp, crack, or decay, impacting both its performance and longevity in building projects. Therefore, the correct answer reflects the maximum moisture content allowed under this classification, which ensures that the lumber is indeed suitable for standard use in dry conditions.

Understanding these classifications helps contractors and builders select the right materials for their projects, ensuring they meet building codes and standards for durability and strength.