What Causes Mold Behind Wallpaper

When wallpaper is applied to exterior walls, this water vapor becomes trapped. During the summer, the problem is compounded by the temperature difference of warm outdoor air and cool indoor air. Condensation begins to form on the backside of the wallpaper, leading to mold growth and even degradation of the drywall.

How do you get rid of mould behind wallpaper?

Steps to Remove the Mold: Fill a bucket with one part water and one part bleach. Keeping yourself protected with gloves and a face mask, moisten the sponge with the bleach solution. Start at the top and wash the walls with the moistened sponge. Wash every area, even if it doesn’t appear to have mold.

How does mold get behind walls?

Mold flourishes in damp conditions, so most causes of mold growth involve unwanted water getting into the house. Some of the most common situations include: Leaky pipes or air-conditioning ducts. Wet clothes.