Under the bathroom sink: Just as we noted in part one concerning the kitchen, you need to check under the vanity sink on a regular basis. Again look for any sign of water drips or wet spots on the floor of the vanity. Any water at all could indicate a problem with the sink drain or the faucet water connections.
Walls: First stand in the bathroom and listen for the sound of tiny water drips. With all of the different water pipes and connections in every bathroom, sometimes you can hear tiny water drips or splash sounds. If you do, take action immediately. Tiny drips and leaks rarely reseal themselves, they usually get progressively worse, and quickly. Second, feel the walls with your hand to see if any of the walls feel damp or soft to the touch. Look for any discoloration, as this is an indication of a possible leak inside the wall. Also check the common wall in the room adjoining the bathroom. A water leak could be affecting this wall instead of the wall in the bathroom itself.
Floors and Floor Coverings: Inspect all areas of the bathroom floor for discoloration. Particular areas of concern will be around the toilet, next to or in front of the vanity, or at either end of the bathtub. If any discoloration is seen, there is a strong possibility of a water problem.
The Exhaust Fan: It's just a fan and it's in the ceiling, right? How could it be a problem or warn me of a problem? If the fan blades are covered with a large amount of dust, the fan isn't working efficiently. Also the reason the blades may be covered with a heavy coating of dust is because there is an excess amount of humidity in the room, allowing a larger amount of dust to accumulate on the blades. Our suggestion is to leave the exhaust fan run for at least 1/2 hour after taking a bath or shower. This will allow the fan to do the job that it was installed for in the first place.
The Exhaust Fan Vent: every exhaust vent, whether it is in the bathroom or over the stove, should always be vented to the outside and not into the attic or the house itself. That's why they are called "exhaust" fans.