Adding a Bathroom Fan
A quiet fan, airtight ductwork, and a leak-free vent combine to clear moisture from the bathroom and the house
A remodeling contractor offers a step-by-step guide to the installation of a bathroom fan, stressing the importance of preventing any moist air from leaking into the attic. A sidebar illustrates how to wire a high-tech switch that will keep the fan running for 20 minutes after you leave the room.
From Fine Homebuilding157
, pp. 96-101