**Introduction** Moisture mapping is a crucial step in ensuring the long-term health and stability of hardwood floors. Understanding acceptable moisture levels is essential for successful floor installation and maintenance. **Acceptable Moisture Levels** Acceptable moisture levels in hardwood floors vary depending on various factors, including the wood species, humidity, and subfloor type. Generally, hardwood floors should maintain a moisture content (MC) between 6-9% for optimal performance. **What is an Acceptable Moisture Reading in a Hardwood Floor?** Determining an acceptable moisture reading requires knowledge of the specific wood species used in the flooring. Here are some approximate guidelines: * Oak: 6-8% MC * Maple: 6-7% MC * Cherry: 6-8% MC * Walnut: 6-8% MC * Hickory: 6-9% MC **Consequences of Incorrect Moisture Levels** Exceeding or falling below acceptable moisture levels can lead to various problems in hardwood floors: * **Excess Moisture:** * Buckling or cupping of planks * Mold or mildew growth * Rot or decay * **Insufficient Moisture:** * Shrinkage or gaps between planks * Squeaking or creaking **Moisture Mapping Procedure** Moisture mapping involves using a moisture meter to measure the MC of hardwood floors and subfloors. It is typically performed before installation, during acclimation, and periodically thereafter. A thorough moisture mapping provides accurate readings that ensure the floor is installed within the recommended moisture range. **Conclusion** Understanding acceptable moisture levels and conducting proper moisture mapping is essential for the longevity and beauty of hardwood floors. By adhering to these guidelines, homeowners and professionals can safeguard their floors from moisture-related issues.