Step 1: Install the Exhaust Fan

To remove the old exhaust fan, turn off the power at the circuit breaker. In the bathroom, unscrew the cover plate. In the attic, disconnect the exhaust flue from the fan as well as any wiring. Then remove the fan from the ceiling.

Cut a new hole to size in the bathroom ceiling for the new exhaust fan. Hold the box in place, and trace an outline as a guide for cutting the new hole.
Put the fan in place and connect the wiring and the exhaust flue. Always follow the manufacturer's directions.

Step 2: Install New Stems

The second part of this fix is to repair the leaky bathtub faucet.

Use a screwdriver to remove the existing handles. To remove the metal trim rings (escutcheons), unscrew them counterclockwise. Use a stem puller to remove the old stems.

Before installing the new stems, place a coat of pipe sealant around the tip of the stems. This will ensure a tight seal. Install the stems. Screw in the new fixtures, following the manufacturer's instructions.

Step 3: Finish the Bathroom

To complete the bathroom fix, we'll repaint the moisture-damaged walls. First, lay down a drop cloth on the floor and on any surfaces that you want to protect from any paint spills. Next, clean the wall surface with a mold and mildew cleaner. Apply a primer coat to the walls. Once it's dry, begin painting the walls.