Affordable waterproofing done right. Waterproofing One specializes in making your home or business waterproof and free of dangerous mold spores. The principal concern of homeowners and home-buyers is dampness, which causes black mold. Mold is very unhealthy for your family or your employees and is the main cause of respiratory diseases and other related diseases. By installing a Pressure Relief System (waterproofing) along with a sump pump will protect your property from decay, the smell of mildew and the health problems that mold fungal spores create.