### Acceptable Moisture Levels
Moisture mapping is a crucial step in assessing the moisture content of hardwood floors to ensure their longevity and prevent potential damage. Acceptable moisture levels vary depending on the species of wood and the region where the flooring is installed.
Generally, the National Wood Flooring Association (NWFA) recommends the following acceptable moisture content ranges for hardwood floors:
* **Oak and Maple:** 6-8%
* **Cherry and Walnut:** 4-6%
* **Exotic Hardwoods:** 5-7%
### What is an Acceptable Moisture Reading in a Hardwood Floor?
When conducting moisture mapping, it is essential to obtain accurate moisture readings using a pin-type moisture meter. Acceptable moisture levels vary slightly between the surface and the core of the flooring.
* **Surface Moisture Reading:** Should be within 1-2% of the recommended acceptable moisture content range for the specific wood species.
* **Core Moisture Reading:** Should not exceed 2-3% above the acceptable surface moisture content range.
It is important to note that these values are general guidelines and may vary depending on specific factors, such as the environmental conditions and the type of underlayment used. If moisture readings deviate significantly from the acceptable ranges, further investigation and remediation may be necessary to address any underlying issues.