The acceptable level for moisture readings varies depending on the type of material being measured and the specific location. However, in general, the acceptable moisture level for wood is between 8% and 12%. For concrete, the acceptable moisture level is between 2% and 4%. It is important to have your moisture levels tested by a professional to ensure they are within the acceptable range.
There are a few things you can do if your moisture levels are too high. First, you should try to find the source of the moisture and fix it. This may involve fixing a leaky roof or pipe, or it may simply involve ventilating the area more thoroughly. Once you have fixed the source of the moisture, you can use a dehumidifier to help dry out the area. You should also consider using a moisture-control product to help prevent the moisture from coming back.
If your moisture levels are too low, you may need to use a humidifier to add moisture to the air. You should also consider using a vapor barrier to help prevent the moisture from escaping from the area.