A bad roof equals leaks, and no one wants that. You can’t always tell from the ground if the roof has any issues though. While I recommend hiring a professional for roofing repairs, some of them can done yourself. Here is a video that shows you what to look for and how to maintain your roof so that you get the full 20 to 25 years from your roof that you are supposed to!
Newhouse & Sun Construction 
Great video. Very helpful. Thank you for taking the time to make it and share! Cheers, Koko❀