Humid Basement Mold - There are several approaches to help prevent moisture damage problems in a basement. The first guideline is no dirt basements. Though these are less common in this day in age, it is a good idea to point out that dirt flooring not just hold a large amount of moisture but can also give off a number of gases. When building a basement, make certain that you've got a floor drain with a trap installed in the bottom point of the ground.
With no floor drain, any water that's spilled inside cannot get out. If necessary, install a sump pump and ensure the sump cover is tightly sealed. Sump pumps are usually used where flooding due to a high water table might be a problem. Additionally, waterproof the exterior of the foundation walls and put in a perimeter drainage system. An often overlooked problem in bathrooms is moisture that comes from humidity.
The easiest way to control humidity would be to exhaust water vapor generated in the home to the exterior. Indications of high humidity comprise condensation on walls, pipes or other surfaces as well a general awareness of moisture in the atmosphere, dampness, and odors. Often, the humidity is going to be brought on by exposing the basement to outside air (open windows), using wet laundry hung to dry in the basement, storing firewood in the basement, and/or a drier vent that exhausts indoors.
In hot, humid weather, keep basement windows closed. Run the furnace fan continuously to circulate home air. The real key to keeping basement humidity low would be to keep them well ventilated and to keep additional moisture out of the basement.