Replacing damaged shingles with sound connections
A shingle repair has to restore the overlapping courses and fastening, not simply put another piece over the hole. Loose tabs, creases and tears need inspection of the affected area and its neighboring material.
Matching the appearance can be limited when a product is discontinued or the existing roof has weathered. The repair still needs a suitable product and sound water-shedding connections. Appearance, repair extent and the remaining roof should be discussed together.
If damaged wood is found beneath the covering, it needs a sound repair before that section is closed. A proposal can describe how additional decking work is approved and charged without pretending all concealed conditions are known from the yard.