Moisture Mapping
Moisture mapping is a crucial step in preparing wood surfaces for painting. By determining the moisture content of the wood, you can ensure that the paint adheres properly and lasts longer.
Wood Moisture Content
The moisture content of wood is expressed as a percentage of the oven-dry weight of the wood. For optimal painting, the wood moisture content should be between 8% and 12%.
What Should the Moisture Content of Wood Be Before Painting?
Before painting, the moisture content of wood should be:
* **Below 12%:** To prevent swelling and blistering of the paint.
* **Above 8%:** To avoid cracking and peeling of the paint.
Consequences of Incorrect Moisture Content
If the wood moisture content is too high or too low:
* **High moisture content:** Paint may not adhere properly, leading to peeling or blistering.
* **Low moisture content:** Paint may crack or peel due to swelling or shrinkage of the wood.
Measuring Wood Moisture Content
You can measure wood moisture content using a moisture meter. Insert the prongs of the meter into the wood and read the digital display.
Additional Tips
* Allow the wood to dry completely before painting.
* Use a dehumidifier to reduce moisture levels in the area where the wood is stored.
* Paint in a well-ventilated area to allow moisture to escape.
By following these guidelines, you can ensure that the moisture content of your wood is optimal for painting, resulting in a durable and attractive finish.