Tell all you know about past inspections
Are you selling your house? Have you had an inspection and did not like what it had to say about your home? Did you discloses EVEYTHING on the past inspection?
If not, you are setting yourself up for a lawsuit. You have to disclose everything to stay out of trouble. Don't take a chance and get sued. I found a great artical on this at http://www.inman.com/buyers-sellers/columnists/dianhymer/sellers-dont-withhold-bad-inspection-report