Single ply roof guarantees usually cover 15-20 years, but the actual service...

https://padlet.com/interworldradiovbqnk/bookmarks-ja4su92mli4vmfwz/wish/wKmOZ52MOJwPWzMA

Single ply roof guarantees usually cover 15-20 years, but the actual service life often runs between 25-40 years. That’s because guarantees focus on material defects, not wear and tear from daily weather or poor maintenance