Local repair becomes more difficult when surrounding shingles cannot be manipulated without damage. The visible defect may be small, but access can affect a wider area. Repairability should be assessed before a firm scope is promised.
What to do next
Ask how the contractor will determine whether neighboring shingles can be retained. Compare the proposed repair boundary and contingencies. A written allowance for discoveries is more useful than a blanket promise that every old roof can receive a simple patch.
Related Perkins guidance
Contact Perkins Roofing to discuss your roof and the appropriate next step.