National Wood Flooring Association Moisture Content

The National Wood Flooring Association's Essential Aspects of Moisture Content

Moisture content is a critical factor to consider when installing and maintaining wood flooring. The National Wood Flooring Association (NWFA) has established guidelines for moisture content to ensure the best possible performance and longevity of your wood flooring.

What is Moisture Content?

Moisture content refers to the amount of water vapor present in wood. Wood naturally absorbs and releases moisture from the air, causing it to expand and contract. When moisture content is too high or too low, it can lead to problems such as buckling, cupping, and gapping.

NWFA Guidelines

According to the NWFA, the ideal moisture content for wood flooring ranges between 6% and 9%. This range allows the wood to expand and contract slightly without causing significant problems.

Measuring Moisture Content

You can measure moisture content using a moisture meter. Insert the meter's probes into the wood and read the display. For accurate results, measure moisture content in several different areas of the flooring.

Controlling Moisture Content

To control moisture content, follow these tips:

Maintain a consistent indoor humidity level between 30% and 50% using a humidifier or dehumidifier.
Install a vapor barrier beneath the wood flooring to prevent moisture from rising from the subfloor.
Ventilate the area where the wood flooring is installed to allow moisture to escape.
Avoid spills and standing water on the wood flooring.

Problems Caused by High or Low Moisture Content

High moisture content can cause:

Buckling
Cupping
Mildew and mold

Low moisture content can cause:

Gapping
Shrinkage
Cracking

Conclusion

By understanding and controlling moisture content, you can ensure the longevity and beauty of your wood flooring. Follow the NWFA guidelines and tips above to maintain optimal moisture content.