The answer to 'why is my asphalt shingles' is that there are several common causes for issues with asphalt shingles, including age, weather damage, improper installation, and lack of maintenance. Symptoms can include curling, cracking, blistering, or missing shingles. Solutions may involve repairs, replacement, or improved maintenance.
If the issues are minor, such as a few damaged shingles, you may be able to handle the repairs yourself. However, for more extensive damage or complex problems, it's best to call a professional roofing contractor who can properly diagnose and address the root cause.