Regular cleanings -- perhaps one every two years -- as well as the occasional roof inspection will help a lot! If you have easy access to your attic, you might simply check it for dampness as often as possible. After that, you can eyeball it from the outside to see if there is anything obvious.
here is more on the subject:
At this appointment, we will go over your different options, discuss your timeline, and help you know what to expect from your roofing project.