Aging Shingle Roof in Need of Maintenance. Here we have an aged asphalt dimensional shingle roof that has a small leak. Upon inspection, there is some unusual wear on the shingles and questionable flashing, but overall in decent condition. Several areas where the shingles were face nailed and not sealed properly. Initially, these should not have been facing nailed but can still be sealed as is. Several other areas on the roof have exposed nails. The flashing is also in poor condition, but we are on the schedule to replace the flashing.