Humidity and temperature in various areas of nature are relatively stable in different seasons. If the wood is exposed to such a relative temperature and humidity environment for a long time, the moisture content will reach a relatively constant.
The water content at this time is called the equilibrium water content.
What are the moisture content classifications of wooden floors?
Moisture content of the floor material: the percentage of the weight of the moisture contained in the floor material and the weight of the floor material after drying.
Balanced moisture content of floor materials: Under certain air conditions, the final moisture absorption stabilized moisture content or desorption stabilized moisture content of the floor material is called the equilibrium moisture content of the floor material (floor material moisture stable state).
How to preliminarily judge the moisture content of the floor?
In terms of weight, after natural drying, the wood is naturally lighter than wood with more water.
With touch, the floor that feels not cold by touching the floor with your hand is a relatively dry floor.
Knocking on the knuckles, a clear voice indicates a dry, wet voice is relatively dull.
Listen to the sound of woodworking planer, the sound of push planing is crisp, the wood is smooth and the shavings are hot, it means dry, otherwise it is wet.
Pinch a handful of wood chips and feel if they are dry.
How to test the water content?
Since the moisture content of the floor is so important, how should it be tested? If you rely on your own naked eyes, there is definitely no way to test the moisture content of the floor. The appearance of the floor is relatively fixed after it is formed and shaped, so to test the moisture content of the floor, you must rely on a special tester. In general, many sales locations have moisture analyzers, and consumers can ask the seller to make on-site measurements.
In different regions, different water content standards will be adopted to adapt to environmental differences. National standards require that the floor moisture content be 5-14%.
What happens if the moisture content is not qualified?
If the moisture content of the floor is inconsistent with the local average moisture content, it is easy to cause problems such as deformation, moisture, and even expansion of the wooden floor, which will affect the service life of the wooden floor.
When the moisture content of the floor material is higher than the equilibrium moisture content, the floor material will drain and shrink, otherwise it will absorb moisture and expand.