Moisture Mapping plays a crucial role in determining the optimal moisture content of wood before painting. This ensures a successful and durable paint finish. ### Wood Moisture Content Wood absorbs moisture from its surroundings, which affects its dimensions, strength, and other properties. Moisture content is expressed as a percentage of the dry weight of wood. ### Ideal Moisture Content for Painting * **2%–8%:** Suitable for interior applications, such as baseboards, trim, and furniture. * **6%–12%:** Ideal for exterior projects, including decks, fences, and siding. Painting wood with excessive moisture content can lead to: * **Peeling:** Moisture trapped beneath the paint can create bubbles and cause the paint to peel away. * **Cracking:** As wood expands and contracts due to moisture changes, the paint may crack. * **Blistering:** High moisture levels can cause air pockets and blisters to form beneath the paint. ### Moisture Mapping Process Moisture Mapping involves measuring the moisture content of wood using specialized tools, such as pin-type moisture meters. The readings are recorded in a map or grid, providing a visual representation of moisture distribution. This helps identify areas with excessive moisture that require additional drying. ### Conclusion Moisture mapping is an essential step before painting wood. By understanding the ideal moisture content and conducting a moisture map, you can ensure that your paint project will achieve optimal results and longevity.