Using a hygrometer

In order to control and prevent house mold, especially toxic black mold, from growing, you need to regulate the level of moisture in your house. Since mold flourishes in high humidity, you need to keep the relative humidity inside low. The U.S. Environmental Protection Agency has set a threshold of 60% relative humidity and, therefore, indoor humidity should be maintained below this figure.

Incidentally, if you are not in the U.S., you should check for any variation to that threshold in your part of the world.

Your first step is to measure the level of relative humidity in the house. This is important for two reasons:

1. Obviously, you must know whether the level is above 60% or not so you can decide if anything needs to be done.

2. You must also know where in the house you have a humidity problem as the humidity level in different parts of the house will vary, for example bathroom, bedroom, kitchen, attic, basement, ductwork, wall cavities, etc.

You can easily use a hygrometer (also known as a relative humidity sensor or moisture meter) to measure the humidity level. It does not have to be expensive but, remember, you get what you pay for. I personally prefer the digital version over the analog because it is more accurate and it can also store minimum and maximum relative humidity information which the analog cannot do. One important point is that some hygrometers require calibration before use. Most people prefer to avoid those and choose the models that do not require calibration or maintenance.

So, assuming you are interested in grabbing one of these models for yourself, click here for some of the best available. That way, you will always know what the humidity level inside your house is and stop house mold from taking root indoors.


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