The answer to how to repair asphalt shingles is to replace any damaged or missing shingles. This involves removing the old shingles, preparing the area, and properly installing new shingles to match the existing roof. Asphalt shingle repairs are a common DIY project, but it's important to take safety precautions and follow best practices to ensure a long-lasting repair.
Before starting, inspect the roof to identify the extent of the damage. If you find widespread issues or the roof is older, it may be better to call a professional roofer for a full roof replacement evaluation.