Floating Floor Basement Slab - There are numerous ways to help avoid moisture damage problems in a basement. The first rule of thumb isn't a dirt basements. Though these are somewhat less prevalent in this day in age, it's good to point out that dirt flooring not only hold a large amount of moisture but can also give off a number of gases. When building a basement, make certain that you have a floor drain with a trap installed at the bottom point of the ground.
Without a floor drain, any water that is spilled inside cannot get out. If necessary, install a sump pump and make sure the sump cover is tightly sealed. Sump pumps are often used where flood due to a high water table may be a problem. In addition, waterproof the outside of the foundation walls and put in a perimeter drainage system. A frequently overlooked problem in bathrooms is moisture that comes out of humidity.
The simplest way to control humidity would be to exhaust water vapor generated in the house to the outside. 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. Many times, the humidity is going to be caused by exposing the basement to external air (open windows), having wet laundry hung to dry in the basement, storing firewood in the basement, or a dryer vent that exhausts indoors.
In summer, use a portable air conditioner or air conditioning to reduce humidity. In warm, humid weather, maintain basement windows closed. Run the furnace fan continuously to circulate house air. The real key to keeping basement humidity would be to keep them well ventilated and keep extra moisture out of the basement.