A homes roof is one of its most important features. Pay close attention to the shingles on a home, if they are missing, lifting and folding back, missing alot of there roof granuales, then there is a good chance they need to be replaced. If they are not it will eventually lead to roof leaks which can cost you thousands of dollars in interior damages, replacement of wood, drywall, electrical and the list goes on and on. So be sure to look closely at the home you are about to rehab.