Single ply roof guarantees usually last 15-20 years, but the roof itself can...

https://padlet.com/sirachapeteengtx/bookmarks-j04qs0veeiy5e2o1/wish/O7A9QmyNP25lQ6x3

Single ply roof guarantees usually last 15-20 years, but the roof itself can often serve 25-40 years if looked after properly. Guarantees cover specific faults, not general wear and tear over time