Porcelain Tile Concrete Basement Floor - There are several approaches to help prevent moisture damage issues in a cellar. The very first rule of thumb is no dirt basements. Though these are somewhat less prevalent in this day in age, it is good to point out that dirt floors not just hold a huge amount of moisture but can also give off a number of gases. When constructing a cellar, make certain that you have a floor drain with a trap installed in the lowest point of the ground.
Without a floor drain, any water that is spilled inside can't escape. Sump pumps are usually used where flooding because of a high water table may be a issue. Additionally, waterproof the outside of the base walls and put in a perimeter drainage system. An often overlooked problem in bathrooms is moisture that comes from humidity.
The simplest way to control humidity would be to exhaust water vapor produced in the house to the outside. Indications of high humidity include condensation on walls, pipes or other surfaces as well a general sense of moisture from the air, dampness, and odors. Often, the humidity is going to be caused by exposing the cellar to external air (open windows), having wet laundry hung to dry from the cellar, keeping firewood from the cellar, and/or a dryer vent that exhausts inside.
In summer, use a portable air conditioner or air conditioning to reduce humidity. In hot, humid weather, maintain cellar windows closed. Run the furnace fan continuously to circulate house air. The real key to keeping basement humidity low would be to keep them well ventilated and keep extra moisture from the cellar.