Plumbing A Basement Bathroom Vent - There are several approaches to help prevent moisture damage issues in a basement. The first guideline is no dirt basements. Although these are somewhat less prevalent in this day in age, it is a good idea to point out that dirt floors not just hold a large amount of moisture but can also give off a variety of gases. When constructing a basement, make sure you have a floor drain using a trap installed at the lowest point of the ground.
Without a floor drain, any water that's spilled inside cannot escape. 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. A frequently overlooked problem in bathrooms is moisture that comes out of humidity.
The easiest way to control humidity is to exhaust water vapor produced in the home to the exterior. Signs of high humidity include condensation on walls, pipes or other surfaces as well an overall sense of moisture in the air, dampness, and smells. Many times, the humidity is going to be brought on by exposing the basement to external air (open windows), having wet laundry hung to dry in the basement, keeping firewood in the basement, or a drier vent that exhausts indoors.
To decrease humidity, there are several things that a homeowner can do: install energy-efficient windows, insulate walls and cold water pipes, insulate floors if at all possible, run drier vents to exhaust straight outside and don't dry laundry or firewood in your basement. In warm, humid weather, keep basement windows shut. The key to keeping basement humidity low is to keep them well ventilated and to keep extra moisture from the basement.