Water damage may look like something simple, but can cause you a great amount of money to fix the real problem. Many people only know water damage as stains they may see in the ceiling but it can actually be swelling walls, mildew smell, and the sounds of dripping as well. To see if you have possible water damage, read the article attached.
Source: http://www.kelmann.com/2015/02/signs-of-water-damage-in-your-home/