Don't just look for a drip coming from the ceiling, though. Signs of moisture also include discolored spots on the wall, loose wallpaper, peeling paint on the ceiling or a damp smell in a hallway or room. And remember that water traveling into your home may take a circuitous route, running down rafters, top plates, studs and sole plates before reaching your ceiling.

Although ice dams might seem like a roofing problem, they are actually caused by poor attic ventilation. If ice dams plague your home, consider applying a waterproofing underlayment when you reroof. Then be sure to increase ventilation.

Thinking about giving your home a makeover? A new roof from CertainTeed provides an opportunity to give your home a distinctive look as well as superior protection.