1. Age: As roofs age, they become more susceptible to damage and wear. Eventually, an older roof may need to be replaced in order to continue to provide proper protection for your home.
2. Extensive damage: Severe damage from weather, falling debris, or other causes may make a full roof replacement necessary.
3. Lack of regular maintenance and inspection: Neglecting to regularly inspect and maintain your roof can lead to undetected issues that can eventually require a full replacement.
4. Improper installation: If a roof was not installed correctly, it may be more prone to damage and leaks, and may require replacement sooner than a properly installed roof.
5. Rot or mold growth: If rot or mold is found in the roof decking, it can indicate that the roof is beyond repair and needs to be replaced.
6. The roof has reached the end of its service life: Most roofs have a limited service life, and when it has reached that point, it needs to be replaced.
7. The roof can't handle the load: If the roof is sagging or has structural issues it can't handle the load of the roof and needs to be replaced.
8. Energy efficiency: If your roof is old and you are looking to improve your energy efficiency, a new roof may be a good option.
9. Aesthetics: Some homeowners may opt to replace their roof because it is outdated or does not match the style of their home.
10. Insurance claims: Sometimes, insurance companies will only cover a portion of the cost of repairs, and a full replacement may be necessary to fully address the damage. This is especially indicated after a major storm where hail and wind can wreak havoc on the entire roof. 

Get regular inspections. Call Scott Bauer Roofing: (937) 293-3702