Start with the source of the problem
A small flashing leak is different from widespread shingle failure. The right answer depends on roof age, damage area, decking condition, and whether the same problem keeps coming back.
When repair makes sense
Repair may be the right move when the roof is newer, damage is isolated, and the surrounding shingles and accessories are still in good condition.
When replacement makes sense
Replacement becomes more practical when damage is widespread, the roof is near the end of its life, or repairs are becoming frequent.
Related Highmark pages
For next steps, compare roof repair, residential roofing, storm damage roofing, and roof washing.