Basement Wall Piers - There are several approaches to help prevent moisture damage issues at a basement. The first rule of thumb isn't a dirt basements. Though these are somewhat less prevalent in this day in age, it is good to point out that dirt floors not only hold a large amount of moisture but also can give off a variety of gases. When building a basement, make certain that you have a floor drain with a trap installed in the bottom point of the ground.
With no floor drain, any water that is spilled inside cannot escape. If needed, 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 issue. Additionally, waterproof the exterior of the foundation walls and install a perimeter drainage system. An often overlooked problem in bathrooms is moisture that comes from humidity.
The simplest way to control humidity is 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 an overall awareness of moisture in the air, dampness, and smells. Many times, the humidity will 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, and/or a dryer vent that exhausts inside.
To decrease humidity, there are several things a homeowner can do: install energy-efficient windows, insulate walls and cold water pipes, insulate floors if possible, run dryer vents to exhaust straight out and don't dry laundry or firewood in your basement. In hot, humid weather, maintain basement windows closed. The key to keeping basement humidity is to keep them well ventilated and keep extra moisture out of the basement.