The sight and sound of dripping water are usually the first symptoms of a roof leak. Regardless of whether it's raining or not, there are other obvious signals you're likely to notice. These are some of them:
Certain rooms have a musty odour.
Your ceiling is stained with water.
Spots on the outside of your house.
Patches of bulging on your interior walls.
Shingles that are missing or are bent.