With heavy rains and a poor drainage system, excess moisture and water vapor can find their way into your house's building materials and building envelope. If left alone for extended periods of time, this can result in water leaking and ultimately elevated humidity levels, which can lower the indoor air quality for the building occupants and allow for water damage from the moisture intrusion. To remediate excess moisture or excess humidity in a home, first, try a dehumidifier to see if it would be sufficient to remove enough water from the air to bring the relative humidity to around 40%. If high humidity is a problem, take a moment to learn about the dehumidifier we use in our home and the best dehumidifier of the year right here: https://spsinspections.com/best-humidifiers-and-dehumidifiers-of-2019/. One of the main issues related to water intrusion in a home is the growth of mold. Water is necessary for mold growth; without water, mold cannot grow, period. If you would like to learn all you need to about mold in the home, please visit our Mold Inspection and Testing article: https://spsinspections.com/mold-inspection-and-testing/. Plumbing leaks or a roof leak are also great candidates for a water intrusion problem. Ultimately, the location, type, and extent of the issue are related to the sources of water intrusion and the rate of intrusion. Please visit https://spsinspections.com/moisture-intrusion-in-the-home/ to read the updated moisture intrusion article now!