What causes the hotel wall covering to be moldy?

1, the waterproof of the bathroom wall is not in place, water seeps into the wall, the wallpaper pasted in the guest room is damp and moldy due to the movement of water and poor ventilation conditions, and the glue used contains protein and starch needed for mold growth.

2. The wall itself is not dry, so it runs in a hurry. The poor ventilation effect of the wallpaper itself leads to mildew of the wallpaper.

Due to climate change, especially in rainy season, the indoor humidity is too high, and the hotel wallpaper is moldy.