If you can’t see any telltale circulation marks, seek out ‘shiners’ poking through the underside from the roof. A shiner can be a nail that skipped the framing member once the roofer nailed down the roof decking. Eventually, don’t neglect to document as much as you can. Choose images from https://roof-repairing39381.blogunteer.com/32844146/top-roofing-supplies-secrets