Wood Moisture Content: EMC, Acclimation, and Wood Movement Guides

Wood constantly gains and loses moisture based on its environment, and even small changes in moisture content can lead to warping, shrinkage, swelling, cracking, and other performance problems. For woodworkers, builders, flooring professionals, and manufacturers, understanding wood moisture content is essential for improving stability, preventing defects, and achieving reliable long-term results.

These resources explain the fundamentals of wood moisture content, including EMC (equilibrium moisture content), wood acclimation, measuring moisture content in wood, moisture-related wood movement, lumber shrinkage, and how moisture affects wood during woodworking and construction projects. You’ll also learn how to use wood movement charts and apply moisture management best practices to help reduce costly wood movement and moisture-related failures.

What is Wood Acclimation and Do I Really Need to Do It?

What is Wood Acclimation and Do I Really Need to Do It?

Acclimation is when you allow wood to adjust to its new environment.

Many of the things that can go wrong when you work with wood are due to moisture, and usually, acclimating wood to the environment where it’s going to be used or installed is a great way to prevent moisture-related failures.

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EMC—what is it and why does it matter?

EMC—what is it and why does it matter?

What is EMC, and how could ignoring it potentially ruin your wood projects?

If you want the answer, keep reading.

What is EMC?

EMC, or equilibrium moisture content, is the point at which a wood board neither gains nor loses moisture.

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