Bilco Basement Door Stair Stringers - There are numerous ways to help avoid moisture damage problems at a cellar. The first rule of thumb isn't a dirt basements. Though these are somewhat less common in this day in age, it's good to point out that dirt flooring not just hold a huge amount of moisture but also can give off a number of gases. When building a cellar, make sure you've got a floor drain with a trap installed in the bottom point of the floor.
With no floor drain, any water that is spilled inside can't escape. Sump pumps are often used where flood because of a high water table may be a problem. In addition, waterproof the outside of the base walls and install a perimeter drainage system. An often overlooked problem in basements is moisture that comes out of humidity.
The easiest way to control humidity is to exhaust water vapor produced in the home to the outside. Indications of high humidity comprise condensation on windows, pipes or other surfaces as well an overall sense of moisture from the air, dampness, and odors. Often, the humidity will be caused by exposing the cellar to external air (open windows), using wet laundry hung to dry from the cellar, keeping firewood from the cellar, and/or a drier vent that exhausts inside.
In warm, humid weather, maintain cellar windows shut. The key to keeping basement humidity low is to keep them well ventilated and to keep extra moisture out of the cellar.