Designing Kitchens and Bathrooms - Mildew on wallpaper

My bathroom upstairs has mildew on the wallpaper. Is there anything to get rid of it without ruining the wallpaper. The bathroom has no ventilation, window or exhaust fan. Can an exhaust fan be put in without putting a hole in the roof? Is there any easy way to install one? I live in a condo. Thanks!

If you have mildew on the surface of your wallpaper, chances are that you also have it beneath the surface. Affected surfaces need to be disinfected with 50/50 bleach water solution or 3% hydrogen peroxide. Hydrogen peroxide is a mild bleach that tends not to produce the odor and discoloration problems of chlorine bleach. Nature's Miracle and Odor Ban from Sam's are organic enzyme digesters that work on organic stains such as mold/mildew. Test any home remedy first in an inconspicuous place for ill effects. If mold/mildew are beneath the wallpaper, you should remove the paper to eliminate the spores.

Mold/mildew like dark, damp, poorly ventillated areas. Because your bathroom has no fan to aid in its ventilation, you have the perfect breeding ground for mold and mildew. While a fan that will provide adequate ventilation (enough cubic feet/minute (CFM)air exchange) would greatly solve your problems, there are some things you can do to help. Place a small fan in the bathroom to help keep the air circulating. Open the bathroom window to let out the steam. Leave the bathroom door open when showering. Wipe all surfaces dry after showering. Spray Lysol to keep mold/mildew at bay on surfaces that tend to be more prone.

Bathroom vents are vented to the outside to carry the moisture to the outdoors rather than into the attic. I am not aware of a bath vent that is not vented to the outdoors. Perhaps you can ask over on the Electrical Forum for recommendations for your ventilation problem.

Best regards,