When there are cracks in the foundation wall and floor, excessive humidity is able to get inside. It can also get in through weak seals on windows. Once inside, it can cause warping and buckling to wooden materials, including support beams and floor joists. This rotting wood can trigger additional problems, including attracting in unwanted pests, such as termites and roaches.
Dangerous Mold and Bacteria
The biggest threat that high levels of moisture in the air can cause would be mold and bacteria growth. Mold is a fungus that is typically dark green or black in color, and it needs three things to survive: moisture, humidity, and organic materials to feed off of. If you don't have your basement properly sealed off from the outside environment, then it is highly likely that all three of these factors exist here.
This fungus grows and releases spores up and into the air. This eventually will make its way into your living quarters, and it can trigger a variety of health problems, including: asthma attacks, eye irritation, skin rashes, respiratory problems, headaches, fatigue, cold/flu-like symptoms, and many other medical conditions.
To take care of the problem, St. Louis Basement Pros can install a device that will be able to control the amount of moisture in the air. Additionally, it will be recommended for you to consider getting a waterproofing system in place beneath your home, and to get the cracks in your foundation filled and sealed.