At TheRemodelers.org we don't sell anything. Instead we provide information that helps our community make decisions regarding home improvement services and projects. Click below for recommended licensed professionals that provide free no obligation quotes.
Answer
How do I know if my roof needs repair or replacement?
Missing shingles, leaks, sagging areas, and granules in gutters are common signs of roof damage. Roofs older than 20–25 years may also be nearing replacement.
Harper Collins
Roofing & Storm Damage