If you have water leaking into your home, you need to get that taken care of as quickly as possible. The collateral damage caused by a roof leak can be very expensive. In fact, actually repairing your roofing material and the deck to make it waterproof is often not that expensive. But, it is the repair of any electrical systems (like lighting) or structural things (like the eaves) inside your house that are expensive to repair.
Your roof protects the rest of your home from water and weather damage year-round. The constant exposure can take a toll on your roofing materials and eventually open up pathways for water to leak into your home and heat to either seep into or out of your attic. In any case, severe roofing wear can cause all sorts of complications, from excessive repair bills to higher monthly utility charges, so you need to know how to identify roofing damage early, before it gets worse.