How does excessive humidity cause home damage?
Outside air is usually drier than the air in your home in the colder months. The moisture in humid air is compelled to flow toward and mix with the outside drier air. And it does so with a force of nature that is known as vapor pressure. A relentless force, vapor pressure can even go against airflow as it forces moisture through wood, plaster, brick, cement and most of the other materials we use to build our homes. This phenomenon can even force excessive indoor humidity through siding to form blisters under the exterior paint.
