Scan the roof for any shingles that may have been lifted by the wind or are missing altogether. Bumps can indicate that the roofing nails below have become loose. With wood shingles, check for curled, broken, and split shingles and for spots where nails have become loose or rusted. Wood shakes show their age when wood crumbles easily between your fingers. On tile roofs, you'll want to look for cracked, broken, or loose tiles.
Bumps can indicate that the roofing nails below have become loose.
In valleys and in flashings around the chimney and vents, check for broken seals along the flashings' edges and for rust spots in the metal. If you have metal gutters and downspouts, look for rust spots that have either weakened the metal or worn holes through it. If your roof is several years old and the problems you've found are minimal, repairs may be all you need. If your roof is beyond repair or repair costs are excessive, reroofing is the best solution, regardless of the age of your roof. Most cities and counties in the Los Angeles Area have adopted reroofing codes to define specific requirements necessary to reroof a structure.