If you’ve had your home for a while and are dealing with an old roof, you may be in need of a roof replacement or roof installation. If you’ve noticed extreme shingle damage, like many shingles that are missing or cracked, roof repair may not cut it. Aside from extensive damage, widespread leaks or water damage can be a sign that a new roof is needed. Finally, consider a new roof if your roof is between 20-25 years old.