The answer to why your flat roof is worn out is likely due to a combination of factors like age, weather exposure, and lack of proper maintenance. Flat roofs are more susceptible to wear and tear over time compared to sloped roofs, especially if they aren't properly cared for. Common signs of a worn-out flat roof include cracking, blistering, ponding water, and visible damage to the roofing material.
The good news is that many flat roof issues can be addressed through regular inspections, timely repairs, and proactive maintenance. However, some more severe problems may require a full roof replacement by a professional roofing contractor. It's important to address any issues promptly to prevent further damage and costly repairs down the line.