Wood Products – maintaining Equilibrium Moisture Content (EMC)

Maintaining the Equilibrium Moisture Content (EMC) in the woodworking industry is a KEY factor to improving both the quality and integrity of the products produced.
The EMC is the moisture content within the wood fibres where moisture is neither gained nor lost. Maintaining a stable EMC prevents undue stress and dimensional changes to the wood. This will result in both higher quality products as well as higher profit margins.
It is generally accepted that the ideal EMC for wood products is between 6% and 11%, depending on geographic location and climate conditions. To accomplish this, humidity levels of 25% to 50% need to be achieved and controlled in pulp and paper mills and wood joineries.
As wood becomes dimensionally stable at its fibre saturation point - preventing it from decreasing or increasing beyond that level will help eliminate wood shrinkage, swelling, warping, splitting and cracking !

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