the aging process of the liner. generally, a liner can be expected to last from 5-15 years with the average being around 10 years.
a failed liner can and will cause many more problems than just having to replace the liner itself. this can cause major leaks, damage to your pool walls and leave you without the use of your pool for a much longer period. we recommend that the pool owner take the time or have a professional inspect for weak spots, tears, wrinkles and any leaks. this will expose any of these issues as well as give clues as to how near replacement you may be. 