How to reduce mold and mildew buildup in a full bathroom where wallpaper is installed?

If you put wallpaper in a kitchen or bath, you better plan on replacing it every couple of years. All the talk about vent fans and open windows resolving the water problem are not true when it comes to wallpaper. DON'T DO IT! I've been a Home Improvement Pro for 35+ years, and have seen ALMOST everything!! I've seen lots of folks do this, and they are always sorry within a year or two.

Then they hire me to rip it all down, repair the walls and re-paint them with a good semi-gloss kitchen and bath paint that contains an algicide to prevent mold/mildew.

You can shower with the bathroom door open to let out the moisture.

After the paper dries from the glue, you could try some Pledge on the paper to make it repel water.

You are asking for a lot of work and expense to put the wallpaper up, then remove mold, then eventually remove the wallpaper.

Also, all that moisture might make the wallpaper fall off.

If you can find plastic wallpaper, that would do the trick.

Have to agree with previous poster - an exhaust window fan is the answer - otherwise, if you can leave the top window open (if it has one) with safety - then I would do this. My bathrooms are fully tiled and I have an extractor fan in the window - but I live in china and we are so used to humidity that nobody has paper in their bathroom and not many of the flats have paper either because of this problem. Running dehumidifiers 24//7 at the moment - place is like a swamp!

You'll be fine as long as you use the exhaust fan to remove that excess moisture. If you don't get mold now, you won't get it with wall paper