Don't buy the house unless they're willing to knock the price down for roof repairs. Hire another home inspector and charge it to the realtor IF they got the home inspector for you. You're not obligated to buy anything. And under contract there's always a way out. Good luck. A home inspector SHOULD find the wrong in homes. But thing is they may not know what they're doing or just being lazy. I thought about doing them since I'm a refinery inspector and could do this on the side. My motto is, "it's broken until I say it's not."