Sometimes the answer is obvious – roof leaks, storm damage, missing shingles, etc. Other times, the indicators are harder to see from the ground. Curling shingles, lifting shingles, missing or damaged flashing, and the loss of granules are all signs it is time to consider a roof replacement.
Additionally, in Florida insurance carriers are starting to cancel coverage for homeowners with a roof over 12-15 years old. If your roof is in this age range, it might be time to consider a replacement that also takes advantage of potential insurance discounts.